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Here is what i usually do :
Declare
CreateSQLSTMT
Prepare
Fetch
the create do this :
D Qt C ''''
D SqlStmt S 2512
D SqlSltCpt S 4s 0
D Type S 1
D Status S 1
D SqlFld C 'F1.thlib, -
D F1.thfile, -
D F1.thuser, -
D F1.thpgm , -
D F1.thevent, -
D date(F1.thtime) -
D as key1, -
D time(F1.thtime) -
D as key2, -
D rrn(f1)'
*
D SQLFrom1 C 'Trighisp1 as F1'
D SQLFrom2 C 'Trigdifp1 as F1'
c Eval SqlSltCpt = 0
c Eval SqlStmt='SELECT '
*
* Zones ...........................................................
c Eval SqlStmt=%trim(SqlStmt)
c +' '
c +SqlFld
c
*
* Fichiers ........................................................
c Eval SqlStmt=%trim(SqlStmt)
c +' FROM '
c + SQLFrom
*
* Sélection .......................................................
c If ££Lib<>' '
c Exsr SqlFirst
c Eval SqlStmt=%trim(SqlStmt)
c + ' F1.Thlib = '
c + Qt + %trim(££Lib) + Qt
c Endif
*
c If ££File<>' '
c Exsr SqlFirst
c Eval SqlStmt=%trim(SqlStmt)
c + ' F1.Thfile = '
c + Qt + %trim(££File) +Qt
c Endif
And so on....
NB : SQLfirst is there to add the AND after the first slect clause.
Hope this help
----- Original Message -----
From: <Michael_Schutte@xxxxxxxxxxxx>
To: "RPG programming on the AS400 / iSeries" <rpg400-l@xxxxxxxxxxxx>
Sent: Wednesday, April 19, 2006 2:32 PM
Subject: Re: EMBEDDED SQL: Optional values in where clause?
C/EXEC SQL
C+ DECLARE C1 DYNAMIC SCROLL CURSOR FOR
C+ SELECT PRFNM,PRLNM,PREN,PRTEDH,PRPLNM,PRCLN
C+ FROM FILE
C+ WHERE PRER = :A1ER
C+ AND (PRL01 = :A1L01 Or :A1L01 = ' ')
C+ AND (PRL02 = :A1L02 Or :A1L02 = ' ')
C+ AND (PRL03 = :A1L03 Or :A1L03 = ' ')
C+ AND (PRL04 = :A1L04 Or :A1L04 = ' ')
C+ AND (PRSEX = :A1SEX Or :A1SEX = ' ')
C+ AND (PRSTA1 = :A1STA Or :A1STA = ' ')
C+ AND (SUBSTRING(PREN,6,4) = :A1EN4 Or :A1EN4 = ' ')
C+ AND (PRFNM LIKE
C+ (CASE
C+ WHEN :FName <> ' ' THEN :FName
C+ ELSE '#$%¢#%¢#$%¢#$¢#$%¢'
C+ END)
C+ OR :FName = ' ')
C+ AND ((PRLNM LIKE
C+ (CASE
C+ WHEN :LName <> ' ' THEN :LName
C+ ELSE '#$%¢#%¢#$%¢#$¢#$%¢'
C+ END)
C+ OR :LName = ' ')
C+ OR (PRPLNM LIKE
C+ (CASE
C+ WHEN :LName <> ' ' And :A1PLNmYN = 'Y' THEN :LName
C+ ELSE '#$%¢#%¢#$%¢#$¢#$%¢'
C+ END)
C+ OR (:LName = ' ' And :A1PLNMYN = 'Y')))
C/END-EXEC
This SQL statement will select record from the file only when the condition
between the parenthesis results in true. There are several host variables
that can be blank, if they are blank then I want that record to be return.
Anyway, I think you'll be able to figure this out. Just ask if you need
help.
Michael Schutte
Work 614-492-7419
email michael_schutte@xxxxxxxxxxxx
"Thomas Gard"
<thomas.gard@gmai
l.com> To
Sent by: rpg400-l@xxxxxxxxxxxx
rpg400-l-bounces@ cc
midrange.com
Subject
EMBEDDED SQL: Optional values in
04/18/2006 08:16 where clause?
PM
Please respond to
RPG programming
on the AS400 /
iSeries
<rpg400-l@midrang
e.com>
I believe recently I saw a thread here or somewhere on how to deal
with optional predicates in a where clause, i.e. sometime parms will
be passed in to be used in where clause, sometime not, its possible to
set the where clause to function accordingly on what is passed in. I
cant recall where I saw it and did not bookmark it, can anyone point
me to the thread or highlight how to do that, thanks.
--
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