Is the following possible:
EXEC sp_Edu3_DeleteTreeStructure (SELECT TreeStructureId FROM TreeStructures)
The SP normally takes one argument. What I want is that the SP is executed for each TreeStructureId found by the Query.
thx, Lieven Cardoen
You can use a CURSOR to do this.
DECLARE #treeStructureId int
DECLARE TreeStructureCursor CURSOR FOR
SELECT
TreeStructureId
FROM
TreeStructures
OPEN TreeStructureCursor
FETCH NEXT FROM TreeStructureCursor
INTO #treeStructureId
WHILE ##FETCH_STATUS = 0
BEGIN
EXEC sp_Edu3_DeleteTreeStructure(#treeStructureId)
FETCH NEXT FROM TreeStructureCursor
INTO #treeStructureId
END
CLOSE TreeStructureCursor
DEALLOCATE TreeStructureCursor
Related
I have a giant mysql sql dump file. But I'm getting error when I try to import it because of foreign key checks. Somehow there is missing data, so I'm importing it with
SET SESSION FOREIGN_KEY_CHECKS=0;
and it works, but I'm looking for a solution for missing data.
So is there any automatic way to find and delete relation data with missing entries to get a clean database dump, or I have to go and write manuel SQL for every relation, write query to delete missing values ?
You can automate a delete statement like this:
DELIMITER $$
DROP PROCEDURE IF EXISTS check_foreign $$
CREATE DEFINER=`root`#`localhost` PROCEDURE `check_foreign`()
BEGIN
DECLARE finishing INTEGER DEFAULT 0;
DECLARE vstmt VARCHAR(4000);
DECLARE vtbname VARCHAR(50);
DECLARE vtbnameref VARCHAR(50);
DECLARE vtbcol VARCHAR(50);
DECLARE vtbcolref VARCHAR(50);
DECLARE cr_tables CURSOR FOR select a.table_name, a.referenced_table_name, a.column_name, a.referenced_column_name from information_schema.KEY_COLUMN_USAGE a where a.table_schema = 'protocol_manager' and a.REFERENCED_TABLE_NAME is not null order by a.table_name;
DECLARE CONTINUE HANDLER FOR not found SET finishing = 1;
OPEN cr_tables;
SET vstmt = '';
table_foreign_delete: loop
if finishing = 1 then
leave table_foreign_delete;
end if;
FETCH cr_tables INTO vtbname, vtbnameref, vtbcol, vtbcolref;
SET vstmt = CONCAT(vstmt, char(10), 'DELETE FROM ', vtbname, ' a WHERE NOT EXISTS (SELECT 1 FROM ', vtbnameref, ' b WHERE a.', vtbcol, ' = b.', vtbcolref, ');');
end loop table_foreign_delete;
select vstmt;
END$$
DELIMITER ;
You can even do deep search to find a way to execute it dynamicly. For example a temporary table with a trigger. You generate a delete statement, insert it into the temp table, trigger the insert that fires a another (func, proc) to execute the statement generated.
As you would most likely have deduced from the following question, I am new to DB2 in general. I am attempting to write my second ever stored procedure using IBM Data Studio and am running into an error when trying to deploy it. The point of the stored procedure is to search for a text string in fields across different tables. NOTE: The code is not complete and is not useful in its current form. I am attempting to test each step as I go along.
Here is all of the code I have so far:
CREATE OR REPLACE PROCEDURE sp_find_string (in in_search_string varchar(200), in in_schema varchar(50))
DYNAMIC RESULT SETS 1
P1: BEGIN
-- #######################################################################
-- #
-- #######################################################################
declare table_a varchar(200);
declare colname varchar(200);
declare sqlcmd varchar(2000);
declare eof smallint default 0;
declare not_found condition for sqlstate '02000';
-- Declare cursor
DECLARE cursor1 CURSOR WITH RETURN for
select tabname, colname from syscat.columns c
--inner join syscat.tables t on t.tabschema = c.tabschema
-- and t.tabname = c.tabname
where tabname like 'MERLIN%'
and tabschema = in_schema;
DECLARE CONTINUE HANDLER FOR SQLSTATE '42704' -- or SQLEXCEPTION
-------------------------------------------------
if (exists
(
select 1 from sysibm.systables
where creator = 'A2815'
and name = 'DBP_TEMP_SEARCH_RESULTS'
)
) then drop table A2815.DBP_TEMP_SEARCH_RESULTS;
end if;
create table A2815.DBP_TEMP_SEARCH_RESULTS
(text_to_match varchar(200)
,table_a varchar(200)
,colname varchar(200)
,match_count bigint);
-- Cursor left open for client application
OPEN cursor1;
while eof = 0 do
p2: begin
declare continue handler for not_found set eof = 1;
fetch from cursor1 into table_a, colname;
insert into A2815.DPB_TEMP_SEARCH_RESULTS
values(table_a, colname);
end p2;
end while;
close cursor1;
--return;
END P1
I am getting this error when attempting to deploy:
Deploy [TIO_D]A2815.SP_FIND_STRING(VARCHAR(200), VARCHAR(50))
Running
A2815.SP_FIND_STRING - Deploy started.
Create stored procedure returns SQLCODE: -204, SQLSTATE: 42704.
A2815.SP_FIND_STRING: 44: "A2815.DPB_TEMP_SEARCH_RESULTS" is an undefined name.. SQLCODE=-204, SQLSTATE=42704, DRIVER=4.18.60
"A2815.DPB_TEMP_SEARCH_RESULTS" is an undefined name.. SQLCODE=-204, SQLSTATE=42704, DRIVER=4.18.60
A2815.SP_FIND_STRING - Deploy failed.
A2815.SP_FIND_STRING - Roll back completed successfully.
When I comment out the insert statement, it deploys just fine (but of course the procedure doesn't do me much good without the ability to insert):
OPEN cursor1;
while eof = 0 do
p2: begin
declare continue handler for not_found set eof = 1;
fetch from cursor1 into table_a, colname;
--insert into A2815.DPB_TEMP_SEARCH_RESULTS
--values(table_a, colname);
end p2;
end while;
close cursor1;
It is true that the table does not exist yet, because it should be created by the procedure. However, if I create the table then deploy the procedure I get this error:
Deploy [TIO_D]A2815.SP_FIND_STRING(VARCHAR(200), VARCHAR(50))
Running
A2815.SP_FIND_STRING - Deploy started.
Create stored procedure returns SQLCODE: -601, SQLSTATE: 42710.
A2815.SP_FIND_STRING: 32: The name of the object to be created is identical to the existing name "A2815.DBP_TEMP_SEARCH_RESULTS" of type "TABLE".. SQLCODE=-601, SQLSTATE=42710, DRIVER=4.18.60
The name of the object to be created is identical to the existing name "A2815.DBP_TEMP_SEARCH_RESULTS" of type "TABLE".. SQLCODE=-601, SQLSTATE=42710, DRIVER=4.18.60
A2815.SP_FIND_STRING - Deploy failed.
A2815.SP_FIND_STRING - Roll back completed successfully.
Can anyone tell me how to get this procedure deployed either when the table exists, when it doesn't exist, or both?
Thank you very much and let me know what other detail is needed. Also, suggestions on how to improve the code in general would be great as well.
The simplest solution is simply to create that table so that it exists before you compile the procedure. If you just run the create table statement manually before compiling the procedure, then there will be no problem.
Commenters have suggested that you should use Declare Global Temporary Table, and I agree with this, since you appear to be using this as a temporary table. However, it doesn't actually solve your specific problem, since the procedure still won't compile if the temporary table doesn't exist at compile time. So, yes, use a temporary table, but you will still have to do the same thing.
Changing the insert statement to dynamic SQL would also work, though it is an ugly solution. Not necessary here, but sometimes it is needed.
Might be a bit late, but the best way to do this would be to create a string with your query, instead of using the query directly, and then using EXECUTE IMMEDIATELY
I'm looking for help with a stored procedure in teradata. I want to update a whole table and for this I'm trying to use a for loop cursor. the problem is that my update is defined via column names passing through parameters to the SP.
I've seen it can be possible to use dynamic sql to do that but I haven't found any information on the subject concerning for loop cursor and dynamic sql. Is it possible with FOR LOOP CURSOR ?
I've tried to do only the select and calculs with dynamic sql, it works fine but then the problem is to update the table from the cursor on the select. In this case how to update a table from my cursor?
I let you show my code.
loop cursor :
REPLACE PROCEDURE [database].calDELAI
(
IN dateDebut VARCHAR(30),
IN dateFin VARCHAR(30),
IN delay VARCHAR(30)
)
BEGIN
DECLARE DATE_DEBUT_COLONNE VARCHAR(64);
DECLARE DATE_FIN_COLONNE VARCHAR(64);
SET DATE_DEBUT_COLONNE=dateDebut;
SET DATE_FIN_COLONNE=dateFin;
FOR for_loop_update AS cur_select_set CURSOR FOR
SELECT
TMP.DATE_FIN_COLONNE-TMP.DATE_DEBUT_COLONNE
FROM [database].ORD_T_DETL_ORDR_DELAI AS TMP
/* the select is more complicated but here is the spirit of it.*/
DO
IF (delay='DELAI1') THEN SET DELAI1=NB_JR_OUVRABLE;
END IF;
END FOR ;
END ;
The errors given by teradata are :
SPL1027:E, Missing/Invalid SQL statement'E(3810):Column/Parameter '[database].TMP.DATE_FIN_COLONNE' does not exist.'.
SPL2001:E, Undefined symbol 'DELAI1'.
SPL2001:E, Undefined symbol 'NB_JR_OUVRABLE'.
Thanks in advance for your replies and your help.
The call statement should contain all the input Paramenters , make sure you are specifying all the input parameters correctly. Could you please provide your call statement.
I am trying to create a BEFORE INSERT trigger that will check the incoming value of a field, and replace it with the same field in another row if that the field is null. However, when I add the CALL statement to my trigger, an error is returned "The trigger "ORGSTRUCT.CSTCNTR_IN" is defined with an unsupported triggered SQL statement". I checked the documentation and saw that cursors weren't supported in the BEFORE (part of the reason for making the stored procedure in the first place), but even when I remove the cursor declaration from the stored procedure the call still generates the same error.
Trigger:
CREATE TRIGGER orgstruct.cstcntr_IN
NO CASCADE
BEFORE INSERT ON orgstruct.tOrgs
REFERENCING NEW AS r
FOR EACH ROW MODE DB2SQL
BEGIN ATOMIC
DECLARE prnt_temp BIGINT;
DECLARE cstcntr_temp CHAR(11);
SET prnt_temp = r.prnt;
SET cstcntr_temp = r.cstcntr;
CALL orgstruct.trspGetPrntCstCntr(prnt_temp,cstcntr_temp);
SET r.cstcntr = cstcntr_temp;
END
Stored procedure:
CREATE PROCEDURE orgstruct.trspGetPrntCstCntr (
IN p_prnt BIGINT,
OUT p_cstcntr CHAR(11)
)
SPECIFIC trGetPrntCstCntr
BEGIN
IF p_prnt IS NULL THEN
RETURN;
END IF;
BEGIN
DECLARE c1 CURSOR
FOR
SELECT cstcntr
FROM orgstruct.tOrgs
WHERE id = p_prnt
FOR READ ONLY;
OPEN c1;
FETCH FROM c1 INTO p_cstcntr;
CLOSE c1;
END;
END
According to the documentation, CALL is allowed in a BEFORE trigger, so I don't understand what the problem is.
A before trigger can call a stored procedure, but the stored proc can't do anything not allowed in the trigger.
In your case, the default level of data access for a SQL stored proc is MODIFIES SQL DATA, which is not allowed in the trigger. You could recreate your stored procedure, changing the data access level to READS SQL DATA; this will allow you to create the trigger.
However: There is no reason to call a stored procedure for something this simple; You can do it using a simple inline trigger:
create trigger orgstruct.cstcntr_IN
no cascade
before insert on orgstruct.tOrgs
referencing new as r
for each row
mode db2sql
set r.cstcntr = case
when r.p_prnt is not null
then (select cstcntr from tOrgs where id = r.p_prnt fetch first 1 row only)
else r.cstcntr
end;
This will be a LOT more efficient because it eliminates both the stored procedure call and the cursor processing inside the stored proc. Even if you wanted to use the stored proc, you could eliminate the cursor inside the stored proc and improve performance.
FYI: the logic that you posted contains an error, and will always set CSTCNTR to NULL. The trigger posted in this answer not do this. :-)
I really like SQuirreL SQL as a SQL query tool, but I've never been able to get it to call stored procedures in our AS/400 DB2 database. I always get the error "The number of parameter values set or registered does not match the number of parameters." I've double-checked the number of params and had no luck. This is the syntax I've tried for a procedure that takes one IN and one OUT:
call SOMESPROC(12345, ?);
It seems that SQuirrel currently is not capable of doing that on AS/400 DB2.
Using the open source "SQL Workbench/J" (http://www.sql-workbench.net/) I was able to call a procedure:
wbcall SOMESPROC(12345, ?);
It has its own command for calling a procedure "wbcall". Use ? for out parameters.
Note: While installing SQL Workbench/J make sure to download the right DB2 driver from IBM and also add the licence file while adding the driver inside SQL Workbench/J.
In Squirrel you can use something like this. You'll want to make sure the type of the declared variable matches the type of your out parameter in the stored procedure.
BEGIN
DECLARE outParam INT;
STORED_PROC_NAME(outParam);
END
If you also need to provide input for the procedure you could do this.
BEGIN
DECLARE outParam INT;
STORED_PROC_NAME('input', outParam);
END
You also need to change the statement separator to something other than ;. Otherwise it will break up the statement and try to send each piece individually.
In the pro version of DbVisualizer, with the "Process Parameter Markers in SQL" under the SQL Commander menu option enabled, it will allow the "?" param
call SOMESPROC(12345, ?);
through trial and error, I was able to see the results in Squirrel.
create or replace variable var4 char(1);
create or replace variable var5 decimal(3,0);
create or replace variable var6 char(60);
call getthedata('XXX',123456789,'1234567',var4,var5,var6);
select var4,var5,var6 from sysibm.sysdummy1; -- displays OUT parms
I would think that if there is one in then the call should be:
CALL SomeSProc(12345)
to get a result maybe try:
SELECT * FROM SomeSProc(12345)
Here is an tested example which works on Squirrel 3.7 with a db2 stored procedure . The trick is to passe with an transitional stored procedure MY_PROC_TEST to call the real stored procedure PROC_TEST.
change statement separator in squirrel > session > session properties > SQL : #
DROP PROCEDURE MY_PROC_TEST()#
CREATE PROCEDURE MY_PROC_TEST()
RESULT SETS 1 -- out resultset (call product)
LANGUAGE SQL
BEGIN
DECLARE flag SMALLINT; -- out parameter
CALL MY_PROC('2015', flag);
END #
CALL MY_PROC_TEST()#
END #
Then you can call the sored procedure like this :
CALL MY_PROC_TEST()#
This will work in Squirrel if you change the delimiter (as specified above). However, to see what the variable is, you need to do the following...
In my example, I will set the delimiter to a tildy (~). Include after last "end", before "select". Code begins here...
begin
declare inoutParm numeric(2,0);
call spMyStoredProcedure(
1234567
, inoutParm
);
declare global temporary table session.myTempTbl
(MyResult char(1024) )
with replace ;
insert into session.myTempTbl
(myResult)
values(inoutParm) ;
end
~
select myResult from session.myTempTbl
Mic Keeley
as400(db2) SQL Developer
I was able to cobble together some amalgamation of all of the above answers and came up with this which worked for me. I'm using Squirrel SQL 2018 connecting to an IBM AS/400 DB2 database. I did have to declare a statement separator, I used "#".
BEGIN
DECLARE success CHAR(1); -- output parameters
DECLARE message CHAR(300);
SET success = ' ';
SET message = ' ';
CALL myProc('some', 'params', 4, success, message);
DECLARE GLOBAL TEMPORARY TABLE session.myTmp(s_res CHAR(1), m_res CHAR(300)) WITH REPLACE;
INSERT INTO session.myTmp(s_res, m_res) VALUES(success, message);
END
# -- <- statement separator needs to be set to something other than ";" in this case it's set to "#"
SELECT * FROM session.myTmp;
change statement separator in squirrel > session > session properties > SQL : '#'
BEGIN
DECLARE inOutParam varchar(200);
set inOutParam = 'a value';
STORED_PROC_NAME(outParam);
END;
#