data temp;
infile cards;
input hosp $3.;
cards;
abc
opq
xyz
;
run;
data tttt;
retain hosplist;
retain cnt;
length hosplist $200;
set temp;
if _n_ = 1 then hosplist = hosp;
*else hosplist = hosplist hosp;
else hosplist = trim(hosplist) hosp;
if _n_ = 1 then cnt = 1;
else cnt + 1;
put _all_;
run;
Friday, September 4, 2009
Wednesday, August 12, 2009
Excel: Creating Data Lables for XY Scatter Plot
Sub DataLabelsFromRange()
Dim Cht As Chart Dim i, ptcnt As Integer
Set Cht = ActiveSheet.ChartObjects(1).Chart On Error Resume Next Cht.SeriesCollection(1).ApplyDataLabels _ Type:=xlDataLabelsShowValue, _ AutoText:=True, _ LegendKey:=False ptcnt = Cht.SeriesCollection(1).Points.Count For i = 1 To ptcnt Cht.SeriesCollection(1).Points(i).DataLabel.Text = _ ActiveSheet.Cells(i + 1, 1).Value
Next i
End Sub
Note -
Column1 - Labels
Column2 - X Values
Column3 - Y Values
Create Scatter Plot with XY values first and then run the above piece of code.
Dim Cht As Chart Dim i, ptcnt As Integer
Set Cht = ActiveSheet.ChartObjects(1).Chart On Error Resume Next Cht.SeriesCollection(1).ApplyDataLabels _ Type:=xlDataLabelsShowValue, _ AutoText:=True, _ LegendKey:=False ptcnt = Cht.SeriesCollection(1).Points.Count For i = 1 To ptcnt Cht.SeriesCollection(1).Points(i).DataLabel.Text = _ ActiveSheet.Cells(i + 1, 1).Value
Next i
End Sub
Note -
Column1 - Labels
Column2 - X Values
Column3 - Y Values
Create Scatter Plot with XY values first and then run the above piece of code.
Wednesday, July 29, 2009
SAS: How to Get ParameterEstimates into a SAS Data set
/* How to Get ParameterEstimates into a Data set */
data test;
input x1 x2 y;
datalines;
12 23 34
23 34 34
34 23 34
;
run;
ods trace on;
proc reg data=test;
model y= x1 x2;
ods output ParameterEstimates=ParmEst;
run;
ods trace off;
/* Name of the Data set you will get it from Log file - Example is ParameterEstimates */
Output Added:
-------------
Name: ParameterEstimates
Label: Parameter Estimates
Template: Stat.REG.ParameterEstimates
Path: Reg.MODEL1.Fit.y.ParameterEstimates
-------------
data test;
input x1 x2 y;
datalines;
12 23 34
23 34 34
34 23 34
;
run;
ods trace on;
proc reg data=test;
model y= x1 x2;
ods output ParameterEstimates=ParmEst;
run;
ods trace off;
/* Name of the Data set you will get it from Log file - Example is ParameterEstimates */
Output Added:
-------------
Name: ParameterEstimates
Label: Parameter Estimates
Template: Stat.REG.ParameterEstimates
Path: Reg.MODEL1.Fit.y.ParameterEstimates
-------------
Wednesday, July 15, 2009
Friday, July 10, 2009
Statistics: TURF Analysis
TURF Analysis, an acronym for "Total Unduplicated Reach and Frequency", is a type of statistical analysis used for providing estimates of media or market potential and devising optimal ways how to use it given the limited resources.
TURF is a statistical model that can used to answer questions like :
1) Where should we place ads to reach the widest possible audience?
2) What kind of market-share will we gain if we add a new line to our model?
http://en.wikipedia.org/wiki/TURF_Analysis
http://www.questionpro.com/akira/showArticle.do?articleID=turf01
TURF is a statistical model that can used to answer questions like :
1) Where should we place ads to reach the widest possible audience?
2) What kind of market-share will we gain if we add a new line to our model?
http://en.wikipedia.org/wiki/TURF_Analysis
http://www.questionpro.com/akira/showArticle.do?articleID=turf01
Excel VBA: Loops Syntax
Sub ForLoop()
Dim I As Long
For I = 1 To 5 Step 1
MsgBox I
Next I
For I = 5 To 1 Step -1
MsgBox I
Next I
End Sub
---------------------------------
Sub DoLoop1()
Dim I As Long
I = 0
Do While I < 0
MsgBox I
I = I + 1
Loop
End Sub
---------------------------------
Sub DoLoop2()
Dim I As Long
I = 0
Do
MsgBox I
I = I + 1
Loop While I < 0
End Sub
---------------------------------
Sub DoLoop3()
Dim I As Long
I = 0
Do Until I > 5
MsgBox I
I = I + 1
Loop
End Sub
---------------------------------
Sub DoLoop4()
Dim I As Long
I = 0
Do
MsgBox I
I = I + 1
Loop Until I > 5
End Sub
Excel VBA: Search And Replace in different files
Sub SearchAndReplace()
Dim oFSO As New FileSystemObject
Dim oFileIn As TextStream
Dim oFileOut As TextStream
Dim sLine As String
If Not oFSO.FileExists("C:\Test\Try04.txt") Then
MsgBox "File Not Found", vbCritical
Exit Sub
End If
Set oFileIn = oFSO.OpenTextFile("C:\Test\Try04.txt")
Set oFileOut = oFSO.CreateTextFile("C:\Test\Try05.txt")
Do While Not oFileIn.AtEndOfStream
sLine = oFileIn.ReadLine
sLine = Replace(sLine, "4", "X")
'sLine = Replace(oFileIn.ReadLine, "4", "X")
oFileOut.WriteLine sLine
Loop
oFileIn.Close
oFileOut.Close
Set oFileIn = Nothing
Set oFileOut = Nothing
Set oFSO = Nothing
MsgBox "Over", vbInformation
End Sub
Dim oFSO As New FileSystemObject
Dim oFileIn As TextStream
Dim oFileOut As TextStream
Dim sLine As String
If Not oFSO.FileExists("C:\Test\Try04.txt") Then
MsgBox "File Not Found", vbCritical
Exit Sub
End If
Set oFileIn = oFSO.OpenTextFile("C:\Test\Try04.txt")
Set oFileOut = oFSO.CreateTextFile("C:\Test\Try05.txt")
Do While Not oFileIn.AtEndOfStream
sLine = oFileIn.ReadLine
sLine = Replace(sLine, "4", "X")
'sLine = Replace(oFileIn.ReadLine, "4", "X")
oFileOut.WriteLine sLine
Loop
oFileIn.Close
oFileOut.Close
Set oFileIn = Nothing
Set oFileOut = Nothing
Set oFSO = Nothing
MsgBox "Over", vbInformation
End Sub
Excel VBA: How to Create a Word Table
Sub CreateWordTable()
Dim oWORD As Word.Application
Dim oDOC As Word.Document
Dim oTable As Word.Table
Dim oWS As Worksheet
Dim lMaxRow As Long
Dim lRow As Long
Dim lMaxCol As Long
Dim lCol As Long
Set oWS = Worksheets(1)
lMaxRow = oWS.Cells.SpecialCells(xlCellTypeLastCell).Row
lMaxCol = oWS.Cells.SpecialCells(xlCellTypeLastCell).Column
Set oWORD = New Word.Application
oWORD.Visible = True
Set oDOC = oWORD.Documents.Add
Set oTable = oDOC.Tables.Add(oWORD.Selection.Range, lMaxRow, lMaxCol)
For lRow = 1 To lMaxRow Step 1
For lCol = 1 To lMaxCol Step 1
oTable.Rows(lRow).Cells(lCol).Range.Text = oWS.Cells(lRow, lCol)
Next lCol
Next lRow
Set oTable = Nothing
oDOC.Save
oDOC.Close
Set oDOC = Nothing
oWORD.Application.Quit
Set oWORD = Nothing
End Sub
Dim oWORD As Word.Application
Dim oDOC As Word.Document
Dim oTable As Word.Table
Dim oWS As Worksheet
Dim lMaxRow As Long
Dim lRow As Long
Dim lMaxCol As Long
Dim lCol As Long
Set oWS = Worksheets(1)
lMaxRow = oWS.Cells.SpecialCells(xlCellTypeLastCell).Row
lMaxCol = oWS.Cells.SpecialCells(xlCellTypeLastCell).Column
Set oWORD = New Word.Application
oWORD.Visible = True
Set oDOC = oWORD.Documents.Add
Set oTable = oDOC.Tables.Add(oWORD.Selection.Range, lMaxRow, lMaxCol)
For lRow = 1 To lMaxRow Step 1
For lCol = 1 To lMaxCol Step 1
oTable.Rows(lRow).Cells(lCol).Range.Text = oWS.Cells(lRow, lCol)
Next lCol
Next lRow
Set oTable = Nothing
oDOC.Save
oDOC.Close
Set oDOC = Nothing
oWORD.Application.Quit
Set oWORD = Nothing
End Sub
Excel VBA: How to Create a PowerPointTable
Sub CreatePowerPointTable()
Dim oPPTApp As PowerPoint.Application
Dim oPPT As PowerPoint.Presentation
Dim oSlide As PowerPoint.Slide
Dim oTable As PowerPoint.Table
Dim oWS As Worksheet
Dim lMaxRow As Long
Dim lRow As Long
Dim lMaxCol As Long
Dim lCol As Long
Set oWS = Worksheets(1)
lMaxRow = oWS.Cells.SpecialCells(xlCellTypeLastCell).Row
lMaxCol = oWS.Cells.SpecialCells(xlCellTypeLastCell).Column
Set oPPTApp = New PowerPoint.Application
oPPTApp.Visible = True
Set oPPT = oPPTApp.Presentations.Add
Set oSlide = oPPT.Slides.Add(1, ppLayoutBlank)
Set oTable = oSlide.Shapes.AddTable(lMaxRow, lMaxCol).Table
For lRow = 1 To lMaxRow Step 1
For lCol = 1 To lMaxCol Step 1
oTable.Rows(lRow).Cells(lCol).Shape.TextFrame.TextRange.Text = oWS.Cells(lRow, lCol)
Next lCol
Next lRow
Set oTable = Nothing
Set oSlide = Nothing
oPPT.Save
oPPT.Close
Set oPPT = Nothing
oPPTApp.Quit
Set oPPTApp = Nothing
End Sub
Dim oPPTApp As PowerPoint.Application
Dim oPPT As PowerPoint.Presentation
Dim oSlide As PowerPoint.Slide
Dim oTable As PowerPoint.Table
Dim oWS As Worksheet
Dim lMaxRow As Long
Dim lRow As Long
Dim lMaxCol As Long
Dim lCol As Long
Set oWS = Worksheets(1)
lMaxRow = oWS.Cells.SpecialCells(xlCellTypeLastCell).Row
lMaxCol = oWS.Cells.SpecialCells(xlCellTypeLastCell).Column
Set oPPTApp = New PowerPoint.Application
oPPTApp.Visible = True
Set oPPT = oPPTApp.Presentations.Add
Set oSlide = oPPT.Slides.Add(1, ppLayoutBlank)
Set oTable = oSlide.Shapes.AddTable(lMaxRow, lMaxCol).Table
For lRow = 1 To lMaxRow Step 1
For lCol = 1 To lMaxCol Step 1
oTable.Rows(lRow).Cells(lCol).Shape.TextFrame.TextRange.Text = oWS.Cells(lRow, lCol)
Next lCol
Next lRow
Set oTable = Nothing
Set oSlide = Nothing
oPPT.Save
oPPT.Close
Set oPPT = Nothing
oPPTApp.Quit
Set oPPTApp = Nothing
End Sub
Excel VBA: How to Create a Text File
Sub CreateTXTFile()
Dim oFSO As New FileSystemObject
Dim oTS As TextStream
Dim oWS As Worksheet
Dim lMaxRow As Long
Dim lRow As Long
Dim lMaxCol As Long
Dim lCol As Long
Dim lColWidths(1 To 3) As Long
Dim sLine As String
Dim sData As String
Dim lStart As Long
lColWidths(1) = 30
lColWidths(2) = 20
lColWidths(3) = 5
Set oWS = Worksheets(1)
lMaxRow = oWS.Cells.SpecialCells(xlCellTypeLastCell).Row
lMaxCol = oWS.Cells.SpecialCells(xlCellTypeLastCell).Column
Set oTS = oFSO.CreateTextFile("C:\Test\Map.csv")
oTS.WriteLine "Variable,Start,Width"
lStart = 1
For lCol = 1 To lMaxCol Step 1
oTS.WriteLine oWS.Cells(1, lCol) & "," & lStart & "," & lColWidths(lCol)
lStart = lStart + lColWidths(lCol)
Next lCol
oTS.Close
Set oTS = oFSO.CreateTextFile("C:\Test\Test3.txt")
For lRow = 2 To lMaxRow Step 1
sLine = vbNullString
For lCol = 1 To lMaxCol Step 1
If (lCol < 3) Then
sData = Left$(oWS.Cells(lRow, lCol) & Space(lColWidths(lCol)), lColWidths(lCol))
Else
sData = Right$(Space(lColWidths(lCol)) & oWS.Cells(lRow, lCol), lColWidths(lCol))
End If
sLine = sLine & sData
Next lCol
oTS.WriteLine sLine
Next lRow
oTS.Close
Set oTS = Nothing
Set oFSO = Nothing
MsgBox "Over"
End Sub
Dim oFSO As New FileSystemObject
Dim oTS As TextStream
Dim oWS As Worksheet
Dim lMaxRow As Long
Dim lRow As Long
Dim lMaxCol As Long
Dim lCol As Long
Dim lColWidths(1 To 3) As Long
Dim sLine As String
Dim sData As String
Dim lStart As Long
lColWidths(1) = 30
lColWidths(2) = 20
lColWidths(3) = 5
Set oWS = Worksheets(1)
lMaxRow = oWS.Cells.SpecialCells(xlCellTypeLastCell).Row
lMaxCol = oWS.Cells.SpecialCells(xlCellTypeLastCell).Column
Set oTS = oFSO.CreateTextFile("C:\Test\Map.csv")
oTS.WriteLine "Variable,Start,Width"
lStart = 1
For lCol = 1 To lMaxCol Step 1
oTS.WriteLine oWS.Cells(1, lCol) & "," & lStart & "," & lColWidths(lCol)
lStart = lStart + lColWidths(lCol)
Next lCol
oTS.Close
Set oTS = oFSO.CreateTextFile("C:\Test\Test3.txt")
For lRow = 2 To lMaxRow Step 1
sLine = vbNullString
For lCol = 1 To lMaxCol Step 1
If (lCol < 3) Then
sData = Left$(oWS.Cells(lRow, lCol) & Space(lColWidths(lCol)), lColWidths(lCol))
Else
sData = Right$(Space(lColWidths(lCol)) & oWS.Cells(lRow, lCol), lColWidths(lCol))
End If
sLine = sLine & sData
Next lCol
oTS.WriteLine sLine
Next lRow
oTS.Close
Set oTS = Nothing
Set oFSO = Nothing
MsgBox "Over"
End Sub
EXCEL VBA: Text Coding (verbatim coding)
Sub Text_Coding()
'Please save Keywords in column 1 of sheet2 and corresponding codes in column 2 in the same sheet
'Save Text in column 1 of sheet1 after running this macro it will generate codes in column 2 in this sheet
Dim txt As Variant
n = Sheet1.Cells.SpecialCells(xlCellTypeLastCell).Row
m = Sheet2.Cells.SpecialCells(xlCellTypeLastCell).Row
For i = 2 To n
Sheet1.Cells(i, 2) = ""
Set searchRange = Sheet1.Cells(i, 1)
For key_w = 2 To m
Set FoundCell = searchRange.Find(what:=Sheet2.Cells(key_w, 1))
If Not FoundCell Is Nothing Then
If (Len(Sheet1.Cells(i, 2)) > 0) Then
Sheet1.Cells(i, 2) = Sheet2.Cells(key_w, 2) & "," & Sheet1.Cells(i, 2)
Else
Sheet1.Cells(i, 2) = Sheet2.Cells(key_w, 2)
End If
End If
Next
Next
End Sub
'Please save Keywords in column 1 of sheet2 and corresponding codes in column 2 in the same sheet
'Save Text in column 1 of sheet1 after running this macro it will generate codes in column 2 in this sheet
Dim txt As Variant
n = Sheet1.Cells.SpecialCells(xlCellTypeLastCell).Row
m = Sheet2.Cells.SpecialCells(xlCellTypeLastCell).Row
For i = 2 To n
Sheet1.Cells(i, 2) = ""
Set searchRange = Sheet1.Cells(i, 1)
For key_w = 2 To m
Set FoundCell = searchRange.Find(what:=Sheet2.Cells(key_w, 1))
If Not FoundCell Is Nothing Then
If (Len(Sheet1.Cells(i, 2)) > 0) Then
Sheet1.Cells(i, 2) = Sheet2.Cells(key_w, 2) & "," & Sheet1.Cells(i, 2)
Else
Sheet1.Cells(i, 2) = Sheet2.Cells(key_w, 2)
End If
End If
Next
Next
End Sub
Thursday, July 9, 2009
SAS: Proc Rank
data staff;
input ID SALARY Department;
datalines;
50 20000 1
10 18000 1
40 28000 2
20 16000 2
30 22000 3
70 26000 1
;run;
proc sort data=staff;by DEPARTMENT;run;
proc rank data=staff out=rankings;
By DEPARTMENT;
var SALARY;
ranks Finish;
run;
/* in Oracle or DB2 */
SELECT A.* FROM
(
SELECT ID, SALARY, DEPARTMENT,
RANK () OVER (PARTITION BY DEPARTMENT ORDER BY SALARY DESC) AS RANK
FROM staff s1
) AS A
WHERE A.RANK=1
input ID SALARY Department;
datalines;
50 20000 1
10 18000 1
40 28000 2
20 16000 2
30 22000 3
70 26000 1
;run;
proc sort data=staff;by DEPARTMENT;run;
proc rank data=staff out=rankings;
By DEPARTMENT;
var SALARY;
ranks Finish;
run;
/* in Oracle or DB2 */
SELECT A.* FROM
(
SELECT ID, SALARY, DEPARTMENT,
RANK () OVER (PARTITION BY DEPARTMENT ORDER BY SALARY DESC) AS RANK
FROM staff s1
) AS A
WHERE A.RANK=1
Wednesday, July 8, 2009
Statistics: Bootstrapping - Building models with lesser data (<30)
Most of the times we often come across the problem of fitting models with lesser data (<30).
To overcome this problem we can use the following methodology:
Residual Resampling – Bootstrapping:
Bootstrapping is the practice of estimating properties of an estimator by resampling. Residual Resampling is one of the types of bootstrapping.
Steps:
OLS fit is computed from the original data.
The residuals are then resampled and the independent variables are fixed.
The residuals are then added to the predicted values of the original fit to obtain a new Y vector.
This new Y vector is then fit against the original X variables.
It is advised that we can have 100 bootstrap samples for the validity of the model. For each bootstrap sample the model is fit. Then calculate the mean of the parameter estimates and std errors. This will be our final estimate.
As sas don’t have the direct procedure to calculate this method, I manually coded the procedure. This is given below:
/* Model data set */
title 'Cement Hardening Data from Hjorth, p 31';
data cement;
input x1-x4 y;
label x1='3CaOAl2O3'
x2='3CaOSiO2'
x3='4CaOAl2O3Fe2O3'
x4='2CaOSiO2';
cards;
7 26 6 60 78.5
1 29 15 52 74.3
11 56 8 20 104.3
11 31 8 47 87.6
7 52 6 33 95.9
11 55 9 22 109.2
3 71 17 6 102.7
1 31 22 44 72.5
2 54 18 22 93.1
21 47 4 26 115.9
1 40 23 34 83.8
11 66 9 12 113.3
10 68 8 12 109.4
;
run;
/*Original fit to get the residuals */
proc reg data=cement;
model y=x1-x4;
output out=cemout r=resid p=pred;
run;
/*Resampling the residuals*/
data spds_wrk.ABC_boot(drop=resid) Spds_wrk.ABC_resid(keep=resid index);
set cemout;
index=_N_;
run;
data spds_wrk.ABC_OUTDATA (drop= i j);
do i = 1 TO 100;
sample_n = i;
do j = 1 TO 13;
index=j;
join_index = int(ranuni(123) * 13) + 1;
output;
end;
end;
run;
data spds_wrk.ABC_model_data;
merge spds_wrk.ABC_boot spds_wrk.ABC_OUTDATA;
by index;
run;
data spds_wrk.ABC_model_data;
merge spds_wrk.ABC_model_data spds_wrk.ABC_resid(rename=(index=join_index));
by join_index;
run;
proc sort data=spds_wrk.ABC_model_data;
by sample_n index;
run;
data spds_wrk.ABC_updated;
set spds_wrk.ABC_model_data;
ycap=pred+resid;
run;
/*Buliding the model with changed y 100 times */
proc reg data=spds_wrk.ABC_updated outest=pred;
model ycap=x1 x2 x3 x4;
by sample_n;
run;
/* Final Estimates*/
proc means data=pred;
var intercept x1 x2 x3 x4;
run;
The mean of Intercept, x2, x2, x3, and x4 will be the final estimates and its std deviations are the final std errors.
http://www.itl.nist.gov/div898/software/dataplot/refman1/auxillar/bootfit.htm
http://en.wikipedia.org/wiki/Bootstrapping_%28statistics%29
To overcome this problem we can use the following methodology:
Residual Resampling – Bootstrapping:
Bootstrapping is the practice of estimating properties of an estimator by resampling. Residual Resampling is one of the types of bootstrapping.
Steps:
OLS fit is computed from the original data.
The residuals are then resampled and the independent variables are fixed.
The residuals are then added to the predicted values of the original fit to obtain a new Y vector.
This new Y vector is then fit against the original X variables.
It is advised that we can have 100 bootstrap samples for the validity of the model. For each bootstrap sample the model is fit. Then calculate the mean of the parameter estimates and std errors. This will be our final estimate.
As sas don’t have the direct procedure to calculate this method, I manually coded the procedure. This is given below:
/* Model data set */
title 'Cement Hardening Data from Hjorth, p 31';
data cement;
input x1-x4 y;
label x1='3CaOAl2O3'
x2='3CaOSiO2'
x3='4CaOAl2O3Fe2O3'
x4='2CaOSiO2';
cards;
7 26 6 60 78.5
1 29 15 52 74.3
11 56 8 20 104.3
11 31 8 47 87.6
7 52 6 33 95.9
11 55 9 22 109.2
3 71 17 6 102.7
1 31 22 44 72.5
2 54 18 22 93.1
21 47 4 26 115.9
1 40 23 34 83.8
11 66 9 12 113.3
10 68 8 12 109.4
;
run;
/*Original fit to get the residuals */
proc reg data=cement;
model y=x1-x4;
output out=cemout r=resid p=pred;
run;
/*Resampling the residuals*/
data spds_wrk.ABC_boot(drop=resid) Spds_wrk.ABC_resid(keep=resid index);
set cemout;
index=_N_;
run;
data spds_wrk.ABC_OUTDATA (drop= i j);
do i = 1 TO 100;
sample_n = i;
do j = 1 TO 13;
index=j;
join_index = int(ranuni(123) * 13) + 1;
output;
end;
end;
run;
data spds_wrk.ABC_model_data;
merge spds_wrk.ABC_boot spds_wrk.ABC_OUTDATA;
by index;
run;
data spds_wrk.ABC_model_data;
merge spds_wrk.ABC_model_data spds_wrk.ABC_resid(rename=(index=join_index));
by join_index;
run;
proc sort data=spds_wrk.ABC_model_data;
by sample_n index;
run;
data spds_wrk.ABC_updated;
set spds_wrk.ABC_model_data;
ycap=pred+resid;
run;
/*Buliding the model with changed y 100 times */
proc reg data=spds_wrk.ABC_updated outest=pred;
model ycap=x1 x2 x3 x4;
by sample_n;
run;
/* Final Estimates*/
proc means data=pred;
var intercept x1 x2 x3 x4;
run;
The mean of Intercept, x2, x2, x3, and x4 will be the final estimates and its std deviations are the final std errors.
http://www.itl.nist.gov/div898/software/dataplot/refman1/auxillar/bootfit.htm
http://en.wikipedia.org/wiki/Bootstrapping_%28statistics%29
SAS: Running Excel Macro From SAS
options noxwait noxsync;
x '"C:\Program Files (x86)\Microsoft Office\Office12\excel.exe"
"C:\Documents and Settings\Sobhan\Desktop\book2.XLS"'; *Pls choose appropriate files 1.to enable excel, 2. open a specified excel file;
data _null_;
x=sleep(5); *for opening Excel it take some time;
run;
filename EXPORT DDE "EXCELSheet1!r1c1:r3c2" ;
data exp;
input name$ marks;
cards;
abc 46
xyz 28
bcd 60
;
data _null_;
set exp;
file EXPORT;
put name marks;
run;
filename savec DDE 'EXCELSYSTEM'; *relating between Excel and SAS;
DATA _NULL_;
FILE savec;
PUT '[run("macro1")]'; *Pls write a macro named macro1 in excel and put macro security in last option i.e.High;
PUT '[save()]';
PUT '[quit()]';
RUN;
x '"C:\Program Files (x86)\Microsoft Office\Office12\excel.exe"
"C:\Documents and Settings\Sobhan\Desktop\book2.XLS"'; *Pls choose appropriate files 1.to enable excel, 2. open a specified excel file;
data _null_;
x=sleep(5); *for opening Excel it take some time;
run;
filename EXPORT DDE "EXCELSheet1!r1c1:r3c2" ;
data exp;
input name$ marks;
cards;
abc 46
xyz 28
bcd 60
;
data _null_;
set exp;
file EXPORT;
put name marks;
run;
filename savec DDE 'EXCELSYSTEM'; *relating between Excel and SAS;
DATA _NULL_;
FILE savec;
PUT '[run("macro1")]'; *Pls write a macro named macro1 in excel and put macro security in last option i.e.High;
PUT '[save()]';
PUT '[quit()]';
RUN;
SAS: String Reverse in SAS
data test;
input text $10.;
datalines;
srikanth
boyina
;run;
%let DataName = test;
%let Variable = Text;
%let length = 32;
%macro rever;
data New;format &Variable._New $32.;
set &DataName.;&Variable._New="_"Put(_N_,z5.0)&Variable.;
run;
data New; set New end = last;
if last then call symput ("N",_n_);run;
data b;
set New;
%do i=7 %to &length.;
_column_&i.=substr(&Variable._New,&i.,1);
%end;
run;
proc transpose data=b out=test(drop=_name_);id &Variable._New; var _column_7-_column_&length.;run;
%do k = 1 %to &N.;
data _null_; set New;
if _n_ = &k. then call symput ("V",&Variable._New);
run;
proc sql noprint;select &V. into :var separated by "" from test order by &V.; quit;
data New;
format SortVar $32.;
set New;
if _n_ = &k. then SortVar = "&var.";
run;
%end;
proc datasets nolist; delete b test; run; quit;
%mend;
%rever;
input text $10.;
datalines;
srikanth
boyina
;run;
%let DataName = test;
%let Variable = Text;
%let length = 32;
%macro rever;
data New;format &Variable._New $32.;
set &DataName.;&Variable._New="_"Put(_N_,z5.0)&Variable.;
run;
data New; set New end = last;
if last then call symput ("N",_n_);run;
data b;
set New;
%do i=7 %to &length.;
_column_&i.=substr(&Variable._New,&i.,1);
%end;
run;
proc transpose data=b out=test(drop=_name_);id &Variable._New; var _column_7-_column_&length.;run;
%do k = 1 %to &N.;
data _null_; set New;
if _n_ = &k. then call symput ("V",&Variable._New);
run;
proc sql noprint;select &V. into :var separated by "" from test order by &V.; quit;
data New;
format SortVar $32.;
set New;
if _n_ = &k. then SortVar = "&var.";
run;
%end;
proc datasets nolist; delete b test; run; quit;
%mend;
%rever;
Excel VBA: List all File Names in a Folder
Sub ListFiles()
Dim oFSO As New FileSystemObject
Dim oFolder As Folder
Dim I As Long
Dim oFile As File
Set oFolder = oFSO.GetFolder("C:\test\teampics")
For I = 1 To oFolder.Files.Count
For Each oFile In oFolder.Files
MsgBox oFile.Name
Next
Next I
MsgBox "Over", vbInformation
End Sub
Dim oFSO As New FileSystemObject
Dim oFolder As Folder
Dim I As Long
Dim oFile As File
Set oFolder = oFSO.GetFolder("C:\test\teampics")
For I = 1 To oFolder.Files.Count
For Each oFile In oFolder.Files
MsgBox oFile.Name
Next
Next I
MsgBox "Over", vbInformation
End Sub
Tuesday, July 7, 2009
SAS: Factorial Program
%Macro Fact(n);
%let R = 1;
%if &n. = 0 %then %let R = 1;
%if &n. = 1 %then %let R = 1;
%if &n.>1 %then %do;
%do i = 1 %to &n. %by 1;
%let R = %SysEvalf(&R.*&i.);
%end;
%end;
%Put &R.;
%Mend;
%Fact(0);
%let R = 1;
%if &n. = 0 %then %let R = 1;
%if &n. = 1 %then %let R = 1;
%if &n.>1 %then %do;
%do i = 1 %to &n. %by 1;
%let R = %SysEvalf(&R.*&i.);
%end;
%end;
%Put &R.;
%Mend;
%Fact(0);
UNIX: JOB Scheduling
How to run at unix box : -
nohup /apps/sas/SAS_9.1/sas /gdr/home_dir/id/trans1.sas &
Scheduling
crontab.dat
01 17 * * * nohup /apps/sas/SAS_9.1/sas /gdr/home_dir/id/trans1.sas &
http://www.adminschoice.com/docs/crontab.htm
For appending to the server list of crons -
crontab < crontab.dat
For editing -> crontab –e
For to view -> crontab –l
nohup /apps/sas/SAS_9.1/sas /gdr/home_dir/id/trans1.sas &
Scheduling
crontab.dat
01 17 * * * nohup /apps/sas/SAS_9.1/sas /gdr/home_dir/id/trans1.sas &
http://www.adminschoice.com/docs/crontab.htm
For appending to the server list of crons -
crontab < crontab.dat
For editing ->
For to view -> crontab –l
SAS: Topics in SAS Programming
http://www.cpc.unc.edu/services/computer/presentations/sasclass99/
Keeping only the variables you want
Keeping only the observations you want
Retained variables
Working with grouped observations
Introduction to merging in SAS
SAS arrays
Restructuring a SAS data set: from a mother file to a child file
Restructuring a SAS data set: from a child file to a mother file
SAS Work Environment
SAS Comments
SAS System Options
Basic SAS Procedures - PROC CONTENTS
Basic SAS Procedures - PROC FREQ
Basic SAS Procedures - PROC PRINT
Processing a Limited Number of Observations
SAS Output Delivery System (ODS)
Output SAS Results in HTML (Excel) Files Using ODS
Using SAS Efficiently with Very Large Datasets
ML Sampling Weights
http://www.cpc.unc.edu/services/computer/presentations/sasclass99/
Keeping only the variables you want
Keeping only the observations you want
Retained variables
Working with grouped observations
Introduction to merging in SAS
SAS arrays
Restructuring a SAS data set: from a mother file to a child file
Restructuring a SAS data set: from a child file to a mother file
SAS Work Environment
SAS Comments
SAS System Options
Basic SAS Procedures - PROC CONTENTS
Basic SAS Procedures - PROC FREQ
Basic SAS Procedures - PROC PRINT
Processing a Limited Number of Observations
SAS Output Delivery System (ODS)
Output SAS Results in HTML (Excel) Files Using ODS
Using SAS Efficiently with Very Large Datasets
ML Sampling Weights
http://www.cpc.unc.edu/services/computer/presentations/sasclass99/
SAS: 2 level Combination
data abc;
input name $10.;
datalines;
Srikanth
Sarbadal
Boyina
Pal
Debajit
Ghosh
;
run;
proc sql noprint;select name into :var separated by " " from abc;
proc transpose data=abc out=result;var name;run;
data comb;
keep var1 var2;
array a(6) $ col1-col6;
set result;
do i=1 to 6;
do j=i+1 to 6;
var1=a(i);
var2=a(j);output;
end;
end;
run;
input name $10.;
datalines;
Srikanth
Sarbadal
Boyina
Pal
Debajit
Ghosh
;
run;
proc sql noprint;select name into :var separated by " " from abc;
proc transpose data=abc out=result;var name;run;
data comb;
keep var1 var2;
array a(6) $ col1-col6;
set result;
do i=1 to 6;
do j=i+1 to 6;
var1=a(i);
var2=a(j);output;
end;
end;
run;
Monday, July 6, 2009
SAS: Replace Missing with Zeros - only for all numeric variables
data test;
format z date8.;
input x y $ z mmddyy10. w;
datalines;
12 srikanth 3-01-1988 8.9
34 kanth 2-7-2009 8.34
12 srikanth 3-01-1988 8.9
34 kanth 2-7-2009 8.34
. srikanth 3-01-1988 8.9
34 kanth 2-7-2009 8.34
;
run;
/* Please provide data set name over here
it will create new data set as copy_old data set name */
%let orginal_dataset=test;
proc contents data=&orginal_dataset. out=data_map(keep=name type format);run;
data data_map;set data_map;
if (type=1 and format ="");run;
data _null_;set data_map;
call symput("n",_N_);
call symput('Var'left(_n_), name);run;
%macro missing_with_zero;
data copy_&orginal_dataset.;set &orginal_dataset.;
%do i=1 %to &n.;
if (&&var&i. eq .) then &&var&i.=0;
%end;run;
%mend;
%missing_with_zero;
format z date8.;
input x y $ z mmddyy10. w;
datalines;
12 srikanth 3-01-1988 8.9
34 kanth 2-7-2009 8.34
12 srikanth 3-01-1988 8.9
34 kanth 2-7-2009 8.34
. srikanth 3-01-1988 8.9
34 kanth 2-7-2009 8.34
;
run;
/* Please provide data set name over here
it will create new data set as copy_old data set name */
%let orginal_dataset=test;
proc contents data=&orginal_dataset. out=data_map(keep=name type format);run;
data data_map;set data_map;
if (type=1 and format ="");run;
data _null_;set data_map;
call symput("n",_N_);
call symput('Var'left(_n_), name);run;
%macro missing_with_zero;
data copy_&orginal_dataset.;set &orginal_dataset.;
%do i=1 %to &n.;
if (&&var&i. eq .) then &&var&i.=0;
%end;run;
%mend;
%missing_with_zero;
SAS: Sending Attachment
data test;
input x;
datalines;
12
23
;
run;
%LET sri_file = /gdr/home_dir/z062709/;
ODS CSV FILE="&sri_file.test.csv";
PROC PRINT DATA= test NOobs label; RUN;
ODS CSV close;
FILENAME OUTBOX EMAIL boyina.srikanth@gmail.com;
DATA _null_;
FILE OUTBOX
TO=("srikanthkumar.boyina@target.com")
SUBJECT="Data From SAS"
ATTACH="&sri_file.test.csv";
RUN;
SAS: Grid Table
data test;
keep a1-a1260 Weight;
set sri.target_home;
a1=qc6_Bath_JCpenney_1;
a2=qc6_Bath_JCpenney_2;
a3=qc6_Bath_JCpenney_3;
a4=qc6_Bath_JCpenney_4;
a5=qc6_Bath_JCpenney_5;
a6=qc6_Bath_JCpenney_6;
a7=qc6_Bath_JCpenney_7;
a8=qc6_Bath_JCpenney_8;
a9=qc6_Bath_JCpenney_9;
a10=qc6_Bath_JCpenney_10;
run;
%macro tet;
proc freq data=test;
%do i=1 %to 100;
table a&i./out=test_a&i.(rename=(a&i.=id count=a&i.) drop=percent);
%end;
WEIGHT Weight;
run;
data final;
merge
%do i=1 %to 100;
test_a&i.
%end;;
by id;
run;
%mend;
%tet;
proc transpose data=final out=t123;
run;
keep a1-a1260 Weight;
set sri.target_home;
a1=qc6_Bath_JCpenney_1;
a2=qc6_Bath_JCpenney_2;
a3=qc6_Bath_JCpenney_3;
a4=qc6_Bath_JCpenney_4;
a5=qc6_Bath_JCpenney_5;
a6=qc6_Bath_JCpenney_6;
a7=qc6_Bath_JCpenney_7;
a8=qc6_Bath_JCpenney_8;
a9=qc6_Bath_JCpenney_9;
a10=qc6_Bath_JCpenney_10;
run;
%macro tet;
proc freq data=test;
%do i=1 %to 100;
table a&i./out=test_a&i.(rename=(a&i.=id count=a&i.) drop=percent);
%end;
WEIGHT Weight;
run;
data final;
merge
%do i=1 %to 100;
test_a&i.
%end;;
by id;
run;
%mend;
%tet;
proc transpose data=final out=t123;
run;
SAS: Converting Char format to date format
data test;
input tes $20.;
datalines;
20090406
;
run;
data ttt;
format dd date9.;
set test;
dd=input(tes,ANYDTDTE11.);
run;
input tes $20.;
datalines;
20090406
;
run;
data ttt;
format dd date9.;
set test;
dd=input(tes,ANYDTDTE11.);
run;
SAS: Read in any type of date format
Hou to read/extract any type of date using ANYDTDTE informat.
The following example illustrates this.
/* Read in raw data – various types of date format */
Data dates;
Input cdate $22.;
Cards;
16-apr-07
01-02-07
2007-05-06
02-jun-07
13-sep-2007
01JAN2009 14:30:08.5
;
Run;
/* Convert them to required date format using AnydtdteW */
Data Convert;
Set dates;
Date = Input (cdate, ANYDTDTE21.);
Format date date9.;
Run;
/* Output */
16APR2007
02JAN2007
06MAY2007
02JUN2007
13SEP2007
01JAN2009
This way you can read in any type of date format into SAS without having to worry about the right informat!
The following example illustrates this.
/* Read in raw data – various types of date format */
Data dates;
Input cdate $22.;
Cards;
16-apr-07
01-02-07
2007-05-06
02-jun-07
13-sep-2007
01JAN2009 14:30:08.5
;
Run;
/* Convert them to required date format using AnydtdteW */
Data Convert;
Set dates;
Date = Input (cdate, ANYDTDTE21.);
Format date date9.;
Run;
/* Output */
16APR2007
02JAN2007
06MAY2007
02JUN2007
13SEP2007
01JAN2009
This way you can read in any type of date format into SAS without having to worry about the right informat!
SAS - how to ‘Extract multiple matching patterns using Perl regular expressions (PRX) from a text string’.
The regular expressions are:
1) \d refers to any digit (0 - 9),
2) \D to any non-digit, and
3) \w to any word character (A-Z, a-z, 0-9, and _).
4) The three metacharacters, *, +, and ? are particularly useful because they add quantity to a regular expression.*/
/*The below example extracts phone numbers from a string */
/*To identify a phone number use the below expressions **/
\( matches an open parenthesis ; \d\d\d matches three digits
\) matches a closed parenthesis; ? matches zero or more occurances of the previous pattern
\d\d\d matches three digits; - matches a dash
\d{4} matches four digits */
/***************************************************************/
DATA EXTRACT;
IF _N_ = 1 THEN DO;
PATTERN = PRXPARSE ("/\(\d\d\d\) ?\d\d\d-\d{4}/");
END;
RETAIN PATTERN;
LENGTH NUMBER $ 15;
INPUT STRING $CHAR80.;
CALL PRXSUBSTR(PATTERN,STRING,START,LENGTH);
IF START GT 0 THEN DO;
NUMBER = SUBSTR(STRING,START,LENGTH);
NUMBER = COMPRESS(NUMBER," ");
OUTPUT;
END;
KEEP NUMBER START LENGTH;
DATALINES;
THIS LINE DOES NOT HAVE ANY PHONE NUMBERS ON IT
THIS LINE DOES: (123)345-4567 LA DI LA DI LA
ALSO VALID (123) 999-9999
TWO NUMBERS HERE (333)444-5555 AND (800)123-4567
;
/**************************************************************/
The ‘PRXPARSE’ function is used to create regular expressions.
Syntax: PRXPARSE (perl-regular-expression)
The ‘PRXSUBSTR’ function returns the length of the match as well as the starting position.
Syntax: PRXSUBSTR(pattern-id, string, start,)
Run the above code in SAS to understand how this works.
For more details visit:
http://support.sas.com/documentation/cdl/en/lrdict/59540/HTML/default/a002288677.htm
1) \d refers to any digit (0 - 9),
2) \D to any non-digit, and
3) \w to any word character (A-Z, a-z, 0-9, and _).
4) The three metacharacters, *, +, and ? are particularly useful because they add quantity to a regular expression.*/
/*The below example extracts phone numbers from a string */
/*To identify a phone number use the below expressions **/
\( matches an open parenthesis ; \d\d\d matches three digits
\) matches a closed parenthesis; ? matches zero or more occurances of the previous pattern
\d\d\d matches three digits; - matches a dash
\d{4} matches four digits */
/***************************************************************/
DATA EXTRACT;
IF _N_ = 1 THEN DO;
PATTERN = PRXPARSE ("/\(\d\d\d\) ?\d\d\d-\d{4}/");
END;
RETAIN PATTERN;
LENGTH NUMBER $ 15;
INPUT STRING $CHAR80.;
CALL PRXSUBSTR(PATTERN,STRING,START,LENGTH);
IF START GT 0 THEN DO;
NUMBER = SUBSTR(STRING,START,LENGTH);
NUMBER = COMPRESS(NUMBER," ");
OUTPUT;
END;
KEEP NUMBER START LENGTH;
DATALINES;
THIS LINE DOES NOT HAVE ANY PHONE NUMBERS ON IT
THIS LINE DOES: (123)345-4567 LA DI LA DI LA
ALSO VALID (123) 999-9999
TWO NUMBERS HERE (333)444-5555 AND (800)123-4567
;
/**************************************************************/
The ‘PRXPARSE’ function is used to create regular expressions.
Syntax: PRXPARSE (perl-regular-expression)
The ‘PRXSUBSTR’ function returns the length of the match as well as the starting position.
Syntax: PRXSUBSTR(pattern-id, string, start,
Run the above code in SAS to understand how this works.
For more details visit:
http://support.sas.com/documentation/cdl/en/lrdict/59540/HTML/default/a002288677.htm
SAS: Proc Sql like _N_ in DATA step
Proc Sql;
Select monotonic() as rownum , a.*
From sashelp.class a
Where monotonic() <5;
Quit;
Select monotonic() as rownum , a.*
From sashelp.class a
Where monotonic() <5;
Quit;
SAS: Identify duplicate and nonduplicate observations in a SAS data set
We can achieve this by using DUPOUT= option on the PROC SORT statement. /* The below code creates the duplicate observations in a new data set called dups while the remaining observations stay in no_dup */
/***********************************************************/
Proc Sort data=sashelp.class out=no_dup dupout=dups nodupkey;
by age;
Run;
/***********************************************************/
SAS LOG:
NOTE: There were 19 observations read from the data set SASHELP.CLASS.
NOTE: 13 observations with duplicate key values were deleted.
NOTE: The data set WORK.NO_DUP has 6 observations and 5 variables.NOTE: The data set WORK.DUPS has 13 observations and 5 variables.
Note:
The DUPOUT option is effective only when used with the NODUPKEY or NODUPREC/NODUP options. Without one of
these options, the log will show a WARNING message and the DUPOUT data set will be created with 0 records.
/***********************************************************/
Proc Sort data=sashelp.class out=no_dup dupout=dups nodupkey;
by age;
Run;
/***********************************************************/
SAS LOG:
NOTE: There were 19 observations read from the data set SASHELP.CLASS.
NOTE: 13 observations with duplicate key values were deleted.
NOTE: The data set WORK.NO_DUP has 6 observations and 5 variables.NOTE: The data set WORK.DUPS has 13 observations and 5 variables.
Note:
The DUPOUT option is effective only when used with the NODUPKEY or NODUPREC/NODUP options. Without one of
these options, the log will show a WARNING message and the DUPOUT data set will be created with 0 records.
UNIX: How to kill/pause/break jobs in Unix
1) To display full information about each of the processes currently running.
ps –fu USERID
2) To pause/break the currently running job and resume.
Kill –s STOP- To Pause the job
Kill –s CONT- To Resume the paused job
3) To display how much free disk space is available for each file system you have
df –h
4) The below command displays how much space a file occupies.
du –kh
5) To compress a file
compress FILENAME
Use the last two tips to efficiently manage your disk space. Delete the files you don’t require, or that can be regenerated easily. If you need to keep them, compress and store them.
ps –fu USERID
2) To pause/break the currently running job and resume.
Kill –s STOP
Kill –s CONT
3) To display how much free disk space is available for each file system you have
df –h
4) The below command displays how much space a file occupies.
du –kh
5) To compress a file
compress FILENAME
Use the last two tips to efficiently manage your disk space. Delete the files you don’t require, or that can be regenerated easily. If you need to keep them, compress and store them.
SAS: Create multiple datasets using a single Proc Means Procedure
e.g., we want to analyze data based on the following 3 combinations. Analysis Variable is fraud_amount. The 3 classification variables being
By fraud_type
By year and fraud_type
By year, month and fraud_type
Proc Means data=sales_data chartype;
Class year month fraud_type;
Var fraud_amount ;
Output out=fraud_type (where= (_type_='001') drop=year month) sum=; /*By fraud_type*/
Output out=year_fraud_type (where =(_type_='101' and year=2008) drop=month) sum=;
Output out=yr_month_fraud_type (where =(_type_='111')) sum=;
Run;
Chartype - converts the (default) numeric values of _TYPE_ to a character variable containing zeros and ones. The length of this variable is equal to the number of variables in the CLASS (or BY) statement.
_type_ - indicates which classification variables SAS should consider for analysis. i.e. _type_ = ‘1’ instructs SAS to consider the variable & ‘0’ instructs SAS to ignore the variable.
This way we do not have to have separate proc means for each classification, but we can combine them all in one step!!
By fraud_type
By year and fraud_type
By year, month and fraud_type
Proc Means data=sales_data chartype;
Class year month fraud_type;
Var fraud_amount ;
Output out=fraud_type (where= (_type_='001') drop=year month) sum=; /*By fraud_type*/
Output out=year_fraud_type (where =(_type_='101' and year=2008) drop=month) sum=;
Output out=yr_month_fraud_type (where =(_type_='111')) sum=;
Run;
Chartype - converts the (default) numeric values of _TYPE_ to a character variable containing zeros and ones. The length of this variable is equal to the number of variables in the CLASS (or BY) statement.
_type_ - indicates which classification variables SAS should consider for analysis. i.e. _type_ = ‘1’ instructs SAS to consider the variable & ‘0’ instructs SAS to ignore the variable.
This way we do not have to have separate proc means for each classification, but we can combine them all in one step!!
SAS: IDENTIFY AND EXTRACT ALL EXCEL FILE NAMES IN A SPECIFIED FOLDER in SAS
In SAS, there are various functions to process external files. These functions can open a
directory, determine the number of members of the directory, identify the file names that can be used to process the
data, and close the directory. File processing can be done dynamically without ever knowing the physical file name.
Few functions are DOPEN, DNUM, DREAD
DOPEN - This external file function opens a directory using a file reference as the argument and returns a numeric directory identifier value. If the value returned is a 0, then the directory was not found. Otherwise, a returned value greater than 0 identifies the opened directory and can be used in other SAS external file functions.
DNUM - This external file function returns the number of members in a directory using the directory identifier returned by the DOPEN function.
DREAD - This external file function uses the identifier returned by the DOPEN function and returns a directory member name. By using the value of the total number of files in a directory returned by DNUM, all files in a directory can be processed in a loop.
Example - IDENTIFY AND EXTRACT ALL EXCEL FILE NAMES IN A SPECIFIED FOLDER - Assume you have a folder which contains many files of different types and you want to extract the file names of one particular type (e.g., Excel workbooks); The following DATA step will extract their file names:
DATA xls_files(keep=file_name);
LENGTH file_name $30 ;
rc= filename("dir","~");
d=DOPEN("dir");
n=DNUM(d);
do i=1 to n;
file_name=DREAD(d,i) ;
if LOWCASE(SCAN(file_name,2,'.')) EQ 'xls' then output;
end;
run;
directory, determine the number of members of the directory, identify the file names that can be used to process the
data, and close the directory. File processing can be done dynamically without ever knowing the physical file name.
Few functions are DOPEN, DNUM, DREAD
DOPEN - This external file function opens a directory using a file reference as the argument and returns a numeric directory identifier value. If the value returned is a 0, then the directory was not found. Otherwise, a returned value greater than 0 identifies the opened directory and can be used in other SAS external file functions.
DNUM - This external file function returns the number of members in a directory using the directory identifier returned by the DOPEN function.
DREAD - This external file function uses the identifier returned by the DOPEN function and returns a directory member name. By using the value of the total number of files in a directory returned by DNUM, all files in a directory can be processed in a loop.
Example - IDENTIFY AND EXTRACT ALL EXCEL FILE NAMES IN A SPECIFIED FOLDER - Assume you have a folder which contains many files of different types and you want to extract the file names of one particular type (e.g., Excel workbooks); The following DATA step will extract their file names:
DATA xls_files(keep=file_name);
LENGTH file_name $30 ;
rc= filename("dir","~");
d=DOPEN("dir");
n=DNUM(d);
do i=1 to n;
file_name=DREAD(d,i) ;
if LOWCASE(SCAN(file_name,2,'.')) EQ 'xls' then output;
end;
run;
SAS: How to create password protected SAS Datasets through EG
/*Assigning password "green" to dataset "testpass"*/
proc datasets lib = work;
modify testpass (pw=green);
run;
/*Change Existing password "green" to "red" for dataset "testpass"*/
proc datasets lib = work;
modify testpass (pw=green/red);
run;
/*Removing password "green" from dataset "testpass"*/
proc datasets lib = work;
modify testpass (pw=green/);
run;
/*Reading into another dataset*/
data testpass_next;
set testpass(read=red);
run;
proc datasets lib = work;
modify testpass (pw=green);
run;
/*Change Existing password "green" to "red" for dataset "testpass"*/
proc datasets lib = work;
modify testpass (pw=green/red);
run;
/*Removing password "green" from dataset "testpass"*/
proc datasets lib = work;
modify testpass (pw=green/);
run;
/*Reading into another dataset*/
data testpass_next;
set testpass(read=red);
run;
SQL: How to fetch only 10 rows from different servers
Database SQL Syntax
DB2 ----> select * from table fetch first 10 rows only
Informix ---->select first 10 * from table
MS SQL Server and Access ----> select top 10 * from table
MySQL and PostgreSQL ----> select * from table limit 10
Oracle 8i ----> select * from (select * from table) where rownum <= 10
DB2 ----> select * from table fetch first 10 rows only
Informix ---->select first 10 * from table
MS SQL Server and Access ----> select top 10 * from table
MySQL and PostgreSQL ----> select * from table limit 10
Oracle 8i ----> select * from (select * from table) where rownum <= 10
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