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Shell Programming and Scripting
imrank
Post 302325280 by Imrank on Sunday 14th of June 2009 10:03:52 AM
06-14-2009
imrank
Hi 
I created a sp with one IN param.
declared a variable with int type, say
=========================================
> delimiter //
create procedure tst(IN t1 varchar(20)
)
begin
declare c1 int;
set c1 = (select seednum+1 from SeedData where RecId=1);
insert into b2(f1, f2) values (t1, c1);
Update SeedData set seednum=seednum+1;
end;
//
========================================
> CALL tst('Test')
Mysql throw an exception saying f2 cannot be NULL!!!
Indeed in table B2 the field f2 is flagged as NOT NULL
hence int data must be passed on to this field; Which happen to be retrieved by
set c1 statement using Select seednum+1,
Many attempt made to see that the c1 does retrieve value from its query? It does
retrieve the value from query but does not retain for insert statement.
Using Select c1 I can see it has a intended value which I am seeking but when it come to INSERT statement execution there is non or NULL!!
What Is wrong here these statement perfectly running at MS SQL server now I am migrating to MYSQL
Please any advise, tip,where is I am wrong?
Thank in advance.
IK
I created a sp with one IN param.
declared a variable with int type, say
=========================================
> delimiter //
create procedure tst(IN t1 varchar(20)
)
begin
declare c1 int;
set c1 = (select seednum+1 from SeedData where RecId=1);
insert into b2(f1, f2) values (t1, c1);
Update SeedData set seednum=seednum+1;
end;
//
========================================
> CALL tst('Test')
Mysql throw an exception saying f2 cannot be NULL!!!
Indeed in table B2 the field f2 is flagged as NOT NULL
hence int data must be passed on to this field; Which happen to be retrieved by
set c1 statement using Select seednum+1,
Many attempt made to see that the c1 does retrieve value from its query? It does
retrieve the value from query but does not retain for insert statement.
Using Select c1 I can see it has a intended value which I am seeking but when it come to INSERT statement execution there is non or NULL!!
What Is wrong here these statement perfectly running at MS SQL server now I am migrating to MYSQL
Please any advise, tip,where is I am wrong?
Thank in advance.
IK
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execute
EXECUTE(7) SQL Commands EXECUTE(7) NAME
EXECUTE - execute a prepared statement SYNOPSIS
EXECUTE name [ ( parameter [, ...] ) ] DESCRIPTION
EXECUTE is used to execute a previously prepared statement. Since prepared statements only exist for the duration of a session, the pre- pared statement must have been created by a PREPARE statement executed earlier in the current session. If the PREPARE statement that created the statement specified some parameters, a compatible set of parameters must be passed to the EXECUTE statement, or else an error is raised. Note that (unlike functions) prepared statements are not overloaded based on the type or number of their parameters; the name of a prepared statement must be unique within a database session. For more information on the creation and usage of prepared statements, see PREPARE [prepare(7)]. PARAMETERS
name The name of the prepared statement to execute. parameter The actual value of a parameter to the prepared statement. This must be an expression yielding a value that is compatible with the data type of this parameter, as was determined when the prepared statement was created. OUTPUTS
The command tag returned by EXECUTE is that of the prepared statement, and not EXECUTE. EXAMPLES
Examples are given in the Examples [prepare(7)] section of the PREPARE [prepare(7)] documentation. COMPATIBILITY
The SQL standard includes an EXECUTE statement, but it is only for use in embedded SQL. This version of the EXECUTE statement also uses a somewhat different syntax. SEE ALSO
DEALLOCATE [deallocate(7)], PREPARE [prepare(7)] SQL - Language Statements 2010-05-14 EXECUTE(7)