SELECT Operator
SELECT Operator (for Beginners)
Summary
For extensive information, go through the SELECT Operator for Experienced
The SELECT operator selects records from an input file and writes in an output file based on selection criteria. 1 to 10 ON fields can be coded with the SELECT operator.
Syntax -

Required Operands
- FROM - FROM parameter specifies ddname of the input file.
- LIST - listdd specifies the list dataset ddname to be created by ICETOOL LIST operation.
- ON - ON operator specifies the field(s) used for DISPLAY operation.
- DISCARD - DISCARD specifies the ddname of the output data set for the not selected records.
Optional Operands
- VSAMTYPE - VSAMTYPE operand specifies the record format for a VSAM input file (F or V).
- UZERO - Causes -0 to be treated as unsigned, that is, as 0.
- USING - USING operand specifies the first 4-characters of the ddname (xxxxCNTL) for the DFSORT control statement file.
Example -
Scenario - Select the first two records for each different value in the sorting criteria.
INPUT - MATEPK.INPUT.PSFILE
BROWSE MATEPK.INPUT.PSFILE Line 00000000 Col 001 080
Command ===> Scroll ===> CSR
----+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----8
********************************* Top of Data **********************************
001 PAWAN MAINFRAME JPM AP IN
002 SRINIVAS TESTING ORACLE TG IN
003 SRIDHAR SAS CG OR US
004 VENKATESH ABAP CSC CA IN
005 RAVI HADOOP CTS FL US
006 PRASAD HR INFOSYS MI US
007 RAJA TESTING IBM CA US
******************************** Bottom of Data ********************************
JCL -
----+----1----+----2----+----3----+----4----+----5----+----6----+----7--
***************************** Top of Data ******************************
//MATEPKS JOB (123),'MATEPK',CLASS=A,MSGCLASS=A,MSGLEVEL=(1,1),
// NOTIFY=&SYSUID
//*
//STEP01 EXEC PGM=ICETOOL
//INDD DD DSN=MATEPK.INPUT.PSFILE,DISP=SHR
//OUTDD DD DSN=MATEPK.OUTPUT.PSFILES,
// DISP=(NEW,CATLG,DELETE),VOLUME=SER=DEVHD4,
// SPACE=(TRK,(1,1),RLSE),UNIT=SYSDA,
// DCB=(DSORG=PS,RECFM=FB,LRECL=80,BLKSIZE=800)
//TOOLIN DD *
SELECT FROM(INDD) TO(OUTDD) ON(60,2,CH) FIRST(2)
/*
//TOOLMSG DD SYSOUT=*
//DFSMSG DD SYSOUT=*
//
**************************** Bottom of Data ****************************
OUTPUT - MATEPK.OUTPUT.PSFILES
BROWSE MATEPK.OUTPUT.PSFILES Line 00000000 Col 001 080
Command ===> Scroll ===> CSR
----+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----8
********************************* Top of Data **********************************
001 PAWAN MAINFRAME JPM AP IN
002 SRINIVAS TESTING ORACLE TG IN
003 SRIDHAR SAS CG OR US
005 RAVI HADOOP CTS FL US
******************************** Bottom of Data ********************************
TOOLMSG (SDSF SPOOL) - Verify TOOLMSG for the return code of the submitted job.
----+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----8----+----9
********************************* TOP OF DATA ********************************************
1ICE600I 0 DFSORT ICETOOL UTILITY RUN STARTED
ICE650I 0 VISIT http://www.ibm.com/storage/dfsort FOR ICETOOL PAPERS, EXAMPLES AND MORE
ICE632I 0 SOURCE FOR ICETOOL STATEMENTS: TOOLIN
ICE630I 0 MODE IN EFFECT: STOP
SELECT FROM(INDD) TO(OUTDD) ON(60,2,CH) FIRST(2)
ICE627I 0 DFSORT CALL 0001 FOR SORT FROM INDD TO OUTDD COMPLETED
ICE628I 0 RECORD COUNT: 000000000000007
ICE638I 0 NUMBER OF RECORDS RESULTING FROM CRITERIA: 000000000000004
ICE602I 0 OPERATION RETURN CODE: 00
ICE601I 0 DFSORT ICETOOL UTILITY RUN ENDED - RETURN CODE: 00
******************************** BOTTOM OF DATA ******************************************
Explaining Solution -
- INDD - Specifies the ddname for input file.
- OUTDD - Specifies the ddname for output file.
- TOOLIN DD * - Specifies the ICETOOL statements for DFSORT.
- TOOLMSG - Specifies where to write the ICETOOL processing messages.
- DFSMSG - Specifies where to write the DFSORT processing messages.
- SELECT FROM(INDD) TO(OUTDD1) ON(60,2,CH) FIRST(2) - Selects the first two records for each individual key(2 character length from 60th position) specified in the criteria.