Question

AS400/SQL procedure - CHAR Function question - how to convert decimal to character

Asked by: Jeanniem

I am trying to create a stored procedure using SQL/400. I need to compare a date that I have converted to a character using the character function: CHAR(YEST2,ISO) (character version of yesterdays date) to an AS400 Date defined as DEC(8,0) also converted to Character. My reference book says that I should be able to use the CHAR function to convert my decimal date to character, but when I try to do that I get a 'MSGSQL0312' error. I have also tried defining my AS400 date variable as NUMERIC and then trying to use the CHAR function. I still get the same error when I try to compile the SQL procedure using the RUNSQLSTM command. My SQL procedure is listed below.
Please help. Thank you!!

CREATE PROCEDURE NAME_CHG5
LANGUAGE SQL
MODIFIES SQL DATA
BEGIN
DECLARE YEST CHAR(8);
DECLARE HOSP DEC(3,0);
DECLARE SPID CHAR(20);
DECLARE PREVLN CHAR(35);
DECLARE NEWLN CHAR(35);
DECLARE PREVFN CHAR(35);
DECLARE PREVMN CHAR(35);
DECLARE NEWFN CHAR(35);
DECLARE NEWMN CHAR(35);
DECLARE CHGDATE NUMERIC(8,0);
DECLARE CCHGDATE CHAR(8);
DECLARE CHGBY CHAR(4);
DECLARE YEST2 DATE;
DECLARE CPNNMDT NUMERIC(10);
DECLARE DYEST2 DEC(8,0);
CREATE PROCEDURE NAME_CHG5
LANGUAGE SQL
MODIFIES SQL DATA
BEGIN
DECLARE YEST CHAR(8);
DECLARE HOSP DEC(3,0);
DECLARE SPID CHAR(20);
DECLARE PREVLN CHAR(35);
DECLARE NEWLN CHAR(35);
DECLARE PREVFN CHAR(35);
DECLARE PREVMN CHAR(35);
DECLARE NEWFN CHAR(35);
DECLARE NEWMN CHAR(35);
DECLARE CHGDATE NUMERIC(8,0);
DECLARE CCHGDATE CHAR(8);
DECLARE CHGBY CHAR(4);
DECLARE YEST2 DATE;
DECLARE CPNNMDT NUMERIC(10);
DECLARE DYEST2 DEC(8,0);
DECLARE NOT_FOUND CONDITION FOR SQLSTATE '02000';
DECLARE EOF_COND CHAR(1) DEFAULT '0';
DECLARE CSR1 CURSOR FOR
SELECT PNHSP, PNSPID, PNLSTN,
PNFSTN, PNMIDN, PELSTN,
PEFSTN, PNNMDT, PNLMBY
FROM BADMPNU, BADMPEU
WHERE PNHSP = PEHSP AND PNSPID = PESPID AND PNNMDT <> 0
AND CPNNMDT = DYEST2;
DECLARE CONTINUE HANDLER FOR NOT_FOUND SET EOF_COND = '1';
SET CPNNMDT = CHAR(PNNMDT);
SET YEST2 = CURDATE() - 1 DAY;
SET DYEST2 = CHAR(YEST2,ISO);
DELETE FROM NAMECHG;
OPEN CSR1;
RPT: REPEAT
FETCH CSR1
INTO HOSP, SPID, PREVLN, PREVFN, PREVMN, NEWLN, NEWFN, NEWMN,
CHGDATE, CHGBY;
INSERT INTO NAMECHG VALUES(HOSP, SPID, PREVLN, PREVFN, PREVMN, NEWLN, NEWFN,
NEWMN, CHGDATE, CHGBY);
UNTIL EOF_COND = '1'
END REPEAT RPT;
CLOSE CSR1;
END;

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Asked On: 2007-01-26 at 16:01:53ID22138770
Tags: sql
,; as400
,; convert
,; char
Topic: Programming for iSeries / AS400
Participating Experts: 3
Points: 500
Comments: 15

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Answers

by: tliottaPosted on 2007-01-26 at 18:35:12ID: 18408751

Jeanniem:

Please show where PNNMDT is declared.

I mean, I see that you have a cursor defined over a SELECT, but you appear to be FETCHing into declared SQL variable CHGDATE. However, you are using CHAR(PNNMDT). And you're using it before even FETCHing, before even opening the cursor.

Hmmm?

Tom

by: JeanniemPosted on 2007-01-29 at 07:17:56ID: 18419875

Ok - I think I get what your saying and so I changed my procedure to read (see lines with * after):
CREATE PROCEDURE NAME_CHG5
LANGUAGE SQL
MODIFIES SQL DATA
BEGIN
DECLARE YEST CHAR(8);
DECLARE HOSP DEC(3,0);
DECLARE SPID CHAR(20);
DECLARE PREVLN CHAR(35);
DECLARE NEWLN CHAR(35);
DECLARE PREVFN CHAR(35);
DECLARE PREVMN CHAR(35);
DECLARE NEWFN CHAR(35);
DECLARE NEWMN CHAR(35);
DECLARE CHGDATE NUMERIC(8,0);
DECLARE CCHGDATE CHAR(8);
DECLARE CHGBY CHAR(4);
DECLARE YEST2 DATE;
DECLARE CPNNMDT NUMERIC(10);
DECLARE DYEST2 DEC(8,0);
CREATE PROCEDURE NAME_CHG5
LANGUAGE SQL
MODIFIES SQL DATA
BEGIN
DECLARE YEST CHAR(8);
DECLARE HOSP DEC(3,0);
DECLARE SPID CHAR(20);
DECLARE PREVLN CHAR(35);
DECLARE NEWLN CHAR(35);
DECLARE PREVFN CHAR(35);
DECLARE PREVMN CHAR(35);
DECLARE NEWFN CHAR(35);
DECLARE NEWMN CHAR(35);
DECLARE CHGDATE NUMERIC(8,0);
DECLARE CCHGDATE CHAR(8);
DECLARE CHGBY CHAR(4);
DECLARE YEST2 DATE;
DECLARE CPNNMDT NUMERIC(10);
DECLARE DYEST2 DEC(8,0);
DECLARE NOT_FOUND CONDITION FOR SQLSTATE '02000';
DECLARE EOF_COND CHAR(1) DEFAULT '0';
DECLARE CSR1 CURSOR FOR
SELECT PNHSP, PNSPID, PNLSTN,
PNFSTN, PNMIDN, PELSTN,
PEFSTN, PNNMDT, PNLMBY
FROM BADMPNU, BADMPEU
WHERE PNHSP = PEHSP AND PNSPID = PESPID AND PNNMDT <> 0; *
CPNNMDT = DYEST2;
DECLARE CONTINUE HANDLER FOR NOT_FOUND SET EOF_COND = '1';
SET CPNNMDT = CHAR(BADMPNU.PNNMDT); *
SET YEST2 = CURDATE() - 1 DAY;
SET DYEST2 = CHAR(YEST2,ISO);
DELETE FROM NAMECHG;
OPEN CSR1;
RPT: REPEAT
FETCH CSR1
INTO HOSP, SPID, PREVLN, PREVFN, PREVMN, NEWLN, NEWFN, NEWMN,
CHGDATE, CHGBY;
IF CPNNMDT = DYEST2 THEN *
INSERT INTO NAMECHG VALUES(HOSP, SPID, PREVLN, PREVFN, PREVMN, NEWLN, NEWFN,
NEWMN, CHGDATE, CHGBY)*
ENDIF;*
UNTIL EOF_COND = '1'
END REPEAT RPT;
CLOSE CSR1;
END;

I'm still getting the following errors:

MSG ID SEV RECORD TEXT
SQL0312 30 30 Position 2 Variable PNNMDT not defined or not usable.
SQL0104 30 42 Position 3 Token ENDIF was not valid. Valid tokens: ;.
Message Summary
Total Info Warning Error Severe Terminal
2 0 0 0 2 0
30 level severity errors found in source
* * * * * E N D O F L I S T I N G * * * * *

Any suggestions?

by: daveslaterPosted on 2007-01-29 at 08:13:12ID: 18420349

Hi
you can use the CAST to convert a wide range of formats to other formats.

cast( mychar as decimal (8,0))

Dave

by: JeanniemPosted on 2007-01-29 at 08:34:18ID: 18420557

I know - I had tried that before and still got an error. I tried it again:
31 SET CPNNMDT = CAST(BADMPNU.PNNMDT AS CHAR);
32 SET YEST2 = CURDATE() - 1 DAY;
33 SET DYEST2 = CHAR(YEST2,ISO);
34 DELETE FROM NAMECHG;
35 OPEN CSR1;
36 RPT: REPEAT
37 FETCH CSR1
38 INTO HOSP, SPID, PREVLN, PREVFN, PREVMN, NEWLN, NEWFN, NEWMN,
39 CHGDATE, CHGBY;
40 IF CPNNMDT = DYEST2 THEN
41 INSERT INTO NAMECHG VALUES(HOSP, SPID, PREVLN, PREVFN, PREVMN, NEWLN, NEWFN,
42 NEWMN, CHGDATE, CHGBY);
43 UNTIL EOF_COND = '1'
44 END REPEAT RPT;
45 CLOSE CSR1;
46 END;
But still got the following:

SQL0312 30 31 Position 1 Variable PNNMDT not defined or not usable.
SQL0199 30 43 Position 1 Keyword UNTIL not expected. Valid tokens: (
IF GET SET CALL CASE DROP GOTO LOCK OPEN WITH ALTER
CLOSE.
Message Summary
Total Info Warning Error Severe Terminal
2 0 0 0 2 0
30 level severity errors found in source
* * * * * E N D O F L I S T I N G * * * * *

by: daveslaterPosted on 2007-01-29 at 08:48:33ID: 18420701

Hi
if you are using this with-in rpg or a sumular language then the SQL compiler does not support qualified data structures.

ie BADMPNU.PNNMDT

declare lclPNNMDT as

then lclPNNMDT = BADMPNU.PNNMDT ;

then
SET CPNNMDT = CAST(lclPNNMDT AS CHAR);
32 SET YEST2 = CURDATE() - 1 DAY;

Dave

by: JeanniemPosted on 2007-01-29 at 09:07:55ID: 18420900

I am not using RPG or any other high level language - just SQL to create a stored procedure - the above is almost exactly the same as what is explained in the book: SQL BUILT-IN FUNCTIONS AND STORED PROCEDURES - The i5/iSeries Programmer's Guide by Mike Faust. I have tried using the qualifed data structure and I've tried it without the qualifier. I appreciate your time. Do you think I still need to declare even if I'm not using RPG?

by: JeanniemPosted on 2007-01-29 at 09:31:17ID: 18421104

It appears that I may have gotten past the SQL0312 error - decided to try to convert the date variable instead of the decimal value that is in the file. However, I still have a loop problem. Can you help me with this if statement?
0033.00 SET YEST2 = CURDATE() - 1 DAY;
0034.00 SET DYEST2 = CHAR(YEST2,ISO);
0035.00 SET YEST3 = CAST(DYEST2 AS DEC);
0036.00 DELETE FROM NAMECHG;
0037.00 OPEN CSR1;
0038.00 RPT: REPEAT
0039.00 FETCH CSR1
0040.00 INTO HOSP, SPID, PREVLN, PREVFN, PREVMN, NEWLN, NEWFN, NEWMN,
0041.00 CHGDATE, CHGBY;
0042.00 IF YEST3 = CHGDATE THEN
0043.00 INSERT INTO NAMECHG VALUES(HOSP, SPID, PREVLN, PREVFN, PREVMN, NEWLN, NEWFN,
0044.00 NEWMN, CHGDATE, CHGBY);
0045.00 -- ELSE GOTO RPT;
0046.00 UNTIL EOF_COND = '1'
0047.00 END REPEAT RPT;
0048.00 CLOSE CSR1;
0049.00 END;

MSG ID SEV RECORD TEXT
SQL0199 30 46 Position 1 Keyword UNTIL not expected. Valid tokens: (
IF GET SET CALL CASE DROP GOTO LOCK OPEN WITH ALTER
CLOSE.
Message Summary
Total Info Warning Error Severe Terminal
1 0 0 0 1 0
30 level severity errors found in source
* * * * * E N D O F L I S T I N G * * * * *

by: daveslashPosted on 2007-01-29 at 09:45:52ID: 18421216

Hmmm, that's interesting. I've never used the REPEAT .. UNTIL construct. I've always used WHILE .. END WHILE.

e.g.
WHILE (loopCounter <= stringLength) DO
... stuf, stuff, stuff, and more stuff
END WHILE;

Gimme a minute, and I'll try out REPEAT .. UNTIL.

-- DaveSlash

by: daveslaterPosted on 2007-01-29 at 09:54:11ID: 18421303

Yes you need to declare the variables in sql.

by: daveslashPosted on 2007-01-29 at 09:57:48ID: 18421339

It looks like you need the END REPEAT.

This works for me:

repeat
fetch x into empName;
until AtEnd = 1
end repeat;

HTH,
DaveSlash

by: daveslashPosted on 2007-01-29 at 10:04:09ID: 18421397

Oops, I'm sorry. I didn't read your code completely.

I think you need to add the "End If".

e.g.

RPT: REPEAT
...
IF YEST3 = CHGDATE THEN
INSERT INTO NAMECHG VALUES(HOSP, SPID, PREVLN, PREVFN, PREVMN, NEWLN, NEWFN,
NEWMN, CHGDATE, CHGBY);
End If;
UNTIL EOF_COND = '1'
END REPEAT RPT;

-- DaveSlash

by: JeanniemPosted on 2007-01-29 at 10:15:12ID: 18421487

I agree - but when I put ENDIF; I get the first error message below (SQL0104), and if I use the : as the error message would seem to indicate I get the second error message below(SQL0199).

0042.00 IF YEST3 = CHGDATE THEN
0043.00 INSERT INTO NAMECHG VALUES(HOSP, SPID, PREVLN, PREVFN, PREVMN, NEWLN, NEWFN,
0044.00 NEWMN, CHGDATE, CHGBY);
0045.00 ENDIF;
0046.00 UNTIL EOF_COND = '1'
0047.00 END REPEAT RPT;
0048.00 CLOSE CSR1;
0049.00 END;
MSG ID SEV RECORD TEXT
SQL0104 30 45 Position 8 Token ; was not valid. Valid tokens: :.
Message Summary
Total Info Warning Error Severe Terminal
1 0 0 0 1 0
30 level severity errors found in source
* * * * * E N D O F L I S T I N G * * * * *
MSG ID SEV RECORD TEXT
SQL0199 30 46 Position 1 Keyword UNTIL not expected. Valid tokens: (
IF GET SET CALL CASE DROP GOTO LOCK OPEN WITH ALTER
CLOSE.
Message Summary
Total Info Warning Error Severe Terminal
1 0 0 0 1 0
30 level severity errors found in source
* * * * * E N D O F L I S T I N G * * * * *

by: daveslashPosted on 2007-01-29 at 10:16:52ID: 18421503

"End If" is two words.

by: JeanniemPosted on 2007-01-29 at 10:24:00ID: 18421571

That compiled - still getting runtime error for CAST statement, but that's a different issue I think. How does this point system work? This is the first time I've posted a question.

by: daveslashPosted on 2007-01-29 at 10:33:28ID: 18421648

When you're signed in and looking at your own question, there should be an "Accept Answer" button next to each comment.

if you're splitting points, I believe there's a "Split Points" link down near the bottom of the question.

20120131-EE-VQP-002

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AS400/SQL procedure - CHAR Function question - how to convert decimal to character

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sql

as400

convert

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Programming for iSeries / AS400

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