what is the shell command for executing stored procedure in DB2 OS400.
CALLPRC PRC(SPNAME) PARM('','',5,'','') RTNVAL()
what is this one??
Assuming you've got a stored procedure called SPNAME, here's how you'd run it through SQL on DB2:
CALL SPNAME('', '', 5, '', '');
This of course assumes that you've already got a database connection through which you can execute SQL statements.
A couple of things you'll probably have to worry about:
You will probably have to specify the program's library like this: CALL LIBNAME.SPNAME(...). Or you can use SET PATH=LIBNAME to provide a list of libraries to search.
You will want to look into parameter binding. This will allow you to pass input values to the procedure and get back the output values.
This link explains how to execute a stored procedure in PHP using ODBC.
Related
I have failed to understand the need for pgScript, which could be executed using pgAdmin tool. When it should be used? What it can do that plpgSQL cannot do? What is equivalent of it in Microsoft SQL Server?
pgScript is a client-side scripting language, while pl/PgSQL runs on the server. This means they have entirely different use cases. For example, PgScript can manage transaction status while pl/PgSQL cannot, but pl/Pgsql can be used to extend the language of SQL while pgScript cannot do that.
Additionally it means the two will handle many other things quite differently ranging from query plans to dynamic SQL, and while pgScript requires round trips between queries pl/Pgsql does not.
One use for pgScript is to define variables and use them later in your SQLs.
For example, you could do something like this:
declare #mytbl, #maxid;
set #mytbl = 'sometable';
set #maxid = 2500;
set #res = select count(*) from #mytbl where id <= #maxid;
print #res;
This approach is to just have any variables you want to change at the top of your script, rather than those getting buried deep inside complex SQL queries.
Of course, pgScript is a feature available only inside PgAdmin III client like #{Craig Ringer} mentioned in his comment.
I used DDL script generator from Toad Data Modeler.
I ran the script using normal query execution in PgAdmin-III but it kept giving me error:
"ERROR: relation "user" already exists SQL state: 42P07".
I ran Execute pgScript in PgAdmin-III and it worked fine.
I have the following MySQL script which I want to implement in PostgreSQL.
SET #statement = search_address_query;
PREPARE dynquery FROM #statement;
EXECUTE dynquery;
DEALLOCATE PREPARE dynquery;
How can I define user defined variable "#statement" using PostgreSQL.
Postgres does not normally use variables in plain SQL. But you can do that, too:
SET foo.test = 'SELECT bar FROM baz';
SELECT current_setting('foo.test');
Read about Customized Options in the manual.
In PostgreSQL 9.1 or earlier you needed to declare custom_variable_classes before you could use that.
However, You cannot EXECUTE dynamic SQL without a PL (procedural language). You would use a DO command for executing ad-hoc statements (but you cannot return data from it). Or use CREATE FUNCTION to create a function that executes dynamic SQL (and can return data in any fashion imaginable).
Be sure to safeguard against SQL injection when using dynamic SQL.
Related:
Is there a way to define a named constant in a PostgreSQL query?
I want to save a set of queries (multiple SQL updates) as a single element that I can execute using pgAdmin3 (PostgreSQL 9.1).
I know that I can save single SELECTS as views but how about multiple UPDATE queries?
Example:
BEGIN;
UPDATE ...;
UPDATE ...;
COMMIT;
Update: What I looking for is a step-by-step guide of adding a stored procedure using the GUI, not running a SQL query that creates it.
So far, I encountered two problems with "New function...": the return type is required and found that NULL is not acceptable, so tried integer. Also, set the type to SQL but I don't know what exactly to write inside the SQL tab, whatever I try the OK button is still disabled and the statusbar says: Please enter function source code.
Do you know or did you try stored procedure (well, stored-procedure-like functions) ?
http://www.postgresql.org/docs/9.1/interactive/plpgsql-structure.html
To call it
select <name of function>(<param1>, <param2>) as result;
Here is the missing guide for a basic SQL stored procedure, one that does return 1.
right click on Functions and choose New Function...
complete name as my_procedure, return type as integer, language as sql
select Definition tab and write SELECT 1;
done
It would be nice to know if you can create queries that are returning nothing.
Currently my development environment is using SQL server express 2008 r2 and VS2010 for my project development.
My question is like this by providing a scenario:
Development goal:
I develop window services something like data mining or data warehousing using .net C#.
That meant I have a two or more database involved.
my senario is like this:
I have a database with a table call SQL_Stored inside provided with a coloum name QueryToExec.
I first idea that get on my mind is written a stored procedure and i tried to came out a stored procedure name Extract_Sources with two parameter passed in thats ID and TableName.
My first step is to select out the sql need to be execute from table SQL_Stored. I tried to get the SQL by using a simple select statement such as:
Select Download_Sql As Query From SQL_Stored
Where ID=#ID AND TableName=#TableName
Is that possible to get the result or is there another way to do so?
My Second step is to excecute the Sql that i get from SQL_Stored Table.Is possible to
to execute the query that select on the following process of this particular stored proc?
Need to create a variable to store the sql ?
Thank you,Appreciate for you all help.Please don't hesitate to voice out my error or mistake because I can learn from it. Thank you.
PS_1:I am sorry for my poor English.
PS_2:I am new to stored procedure.
LiangCk
Try this:
DECLARE #download_sql VARCHAR(MAX)
Select
#download_sql = Download_Sql
From
SQL_Stored
Where
AreaID = #AreaID
AND TableName = #TableName
EXEC (#download_sql)
I want to know WHERE to write stored procedures in PostgreSQL?
I mean not how to write but the very basic thing where to write, where to go if I want to write one?
Is it written just like query or in some different sort of file?
I am fairly new to postgresql
So please explain as much as possible
Just use any text editor to create a (SQL) file containing the necessary CREATE FUNCTION statement.
Then run that file using psql.
As an alternative you can use a GUI tool like pgAdmin or something similar (Squirrel, DbVisualizer, SQL Workbench/J, ...) where you have the editor "built-in"
You can directly run the statement that you edit against the database.
Use the CREATE FUNCTION... command in whatever your prefered PSQL manager is.
Something like this (psuedo SQL):
CREATE OR REPLACE FUNCTION
MyProc(text, text)
RETURNS
void
AS
$delimiter$
INSERT INTO MyTable (text_val_1, text_val_2)
VALUES ($1, $2);
$delimiter$
LANGUAGE SQL;
More info can be found here:
http://www.day32.com/MySQL/Meetup/Presentations/postgresql_stored_procedures.pdf
You need to open pgAdmin application which you need to install if you do not have it.
Then you need click on this button as I have marked and then a query editor will appear at right side. You will write your query or stored procedure or functions here in this query editor.
See the screenshot attached :