I want to create stored procedure for select statment below is procedure i have created but it giving data ouput blank
CREATE OR REPLACE PROCEDURE public.deactivate_unpaid_accounts()
LANGUAGE 'sql'
AS $BODY$
select * from employees where salary=10000
$BODY$;
CALL deactivate_unpaid_accounts();
Procedures (which weren't available in 9.5 to begin with) are not intended to return result sets.
If you want to return a result, you should use a function in Postgres.
CREATE OR REPLACE FUNCTION public.deactivate_unpaid_accounts()
returns setof employees
LANGUAGE sql
AS $BODY$
select *
from employees
where salary=10000;
$BODY$;
Then use it like this:
select *
from deactivate_unpaid_accounts();
Related
I'm working with sybase (15) and I'm trying to write a store procedure which will return a list of rows through a SELECT. Unfortunately, it seems that sybase is not supporting to pass a TABLE as variable output, so I'm not able to see the result of my store procedure.
Create Proc list_employers (
#code int
)
AS
BEGIN
SELECT * from employers where code_type = #code
END
The output should be a table with the name, surname of all employers with the same code.
How can I achieve that?
I need to write a procedure in Redshift that will write to a table, but the table name comes from the input string. Then I declare a variable that puts together the table name.
CREATE OR REPLACE PROCEDURE my_schema.data_test(current "varchar")
LANGUAGE plpgsql
AS $$
declare new_table varchar(50) = 'new_tab' || '_' || current;
BEGIN
select 'somestring' as colname into new_table;
commit;
END;
$$
This code runs but it doesn't create a new table, no errors. If I remove the declare statement then it works, creating a table called "new_table". It's just not using the declared variable name.
It's hard to find good examples because Redshift is postgresql and all the postgresql pages say that it only has functions, not procedures. But Redshift procedures were introduced last year and I don't see many examples.
Well, when you are declaring a variable "new_table", and performing a SELECT ..INTO "new_table", the value is getting assigned to the variable "new_table". You will see that if you return your variable using a OUT parameter.
And when you remove the declaration, it simply work as a SELECT INTO syntax of Redshift SQL and creates a table.
Now to the solution:
Create a table using the CREATE TABLE AS...syntax.
Also you need to pass the value of declared variable, so use the EXECUTE command.
CREATE OR REPLACE PROCEDURE public.ct_tab (vname varchar)
AS $$
DECLARE tname VARCHAR(50):='public.swap_'||vname;
BEGIN
execute 'create table ' || tname || ' as select ''name''';
END;
$$ LANGUAGE plpgsql
;
Now if you call the procedure passing 'abc', a table named "swap_abc" will be created in public schema.
call public.ct_tab('abc');
Let me know if it helps :)
I am trying to write a stored procedure in AWS Redshift SQL and one of my parameters needs the possibility to have an integer list (will be using 'IN(0,100,200,...)' inside there WHERE clause). How would I write the input parameter in the header of the procedure so that this is possible (if at all?)
I've tried passing them in as a VARCHAR "integer list" type thing but wasn't sure then how to parse that back into ints.
Update: I found a way to parse the string and loop through it using the SPLIT_PART function and store all of those into a table. Then just use a SELECT * FROM table with the IN() call
What I ended up doing was as follows. I took in the integers that I was expecting as a comma-separated string. I then ran the following on it.
CREATE OR REPLACE PROCEDURE test_string_to_int(VARCHAR)
AS $$
DECLARE
split_me ALIAS FOR $1;
loop_var INT;
BEGIN
DROP TABLE IF EXISTS int_list;
CREATE TEMPORARY TABLE int_list (
integer_to_store INT
);
FOR loop_var IN 1..(REGEXP_COUNT(split_me,',') + 1) LOOP
INSERT INTO int_list VALUES (CAST(SPLIT_PART(split_me,',',loop_var) AS INT));
END LOOP;
END;
$$ LANGUAGE plpgsql;
So I would call the procedure with something like:
CALL test_string_to_int('1,2,3');
and could do a select statement on it to see all the values stored into the table. Then in my queries the need this parameter I ran:
.........................
WHERE num_items IN(SELECT integer_to_store FROM int_list);
I'm working with netezza database and have a requirement to insert a Y flag for stores in California. I wrote the below procedure
CREATE OR REPLACE PROCEDURE MY_NEW_PROCEDURE() RETURNS BOOL
EXECUTE AS OWNER LANGUAGE NZPLSQL AS
BEGIN_PROC
DECLARE
rec RECORD;
BEGIN
FOR rec in SELECT * from test_table
LOOP
if rec.state_code ='CA'
EXECUTE IMMEDIATE 'INSERT INTO test_table (california_stores)' || 'values('y')';
END LOOP;
END;
END_PROC;
when I call the procedure using call MY_NEW_PROCEDURE() I get an error at line EXECUTE IMMEDIATE. I'm not sure what change I need to make here.
Don't know about netezza, but below is the procedure I used to test this (using SQL developer).
Works fine for me, although it would make more sense to update the row to set california_stores to 'Y'rather than insert a new row with california_stores = 'Y' for each calafornia store that you have.....
CREATE OR REPLACE PROCEDURE "MY_NEW_PROCEDURE" as
rec test_table2%rowtype;
BEGIN
FOR rec in (SELECT * from test_table2) LOOP
if rec.state_code = 'CA' then
EXECUTE IMMEDIATE 'INSERT INTO test_table2 (california_stores)' || 'values(''y'')';
end if;
END LOOP;
END;
You didn't post the second error, but it looks to me like your insert statement isn't going to do what you want anyway. If the rec variable contains the attribute state_code and you're inserting a single value to test_table then the record will simply be empty except for a 'Y' in california_stores.
I'm going to guess that you're getting an error now either because of the spacing in the insert statement insert into test_table (california_stores)values('y') or because you didn't terminate the execute statement with a semicolon. The plsql for that line should be
execute immediate 'insert into test_table (california_stores) values (''y'');';
Hello I am trying to automate my history tracking procedure in MySQL.
The procedure should update a table and create another using uid as a name.
CREATE PROCEDURE `InsertQueryStore`( u VARCHAR(128), ID INT, q VARCHAR(1024) )
BEGIN
INSERT INTO querystore(`qID`, `qstring`, `user`) VALUES(ID, q, u); # this works
# DROP TABLE IF EXIST ID ; //Can I do something like this?
# CREATE TABLE ID q; // The q is a query string which should return results into to table ID
END;
then I would like to call as:
Call InsertQueryStore("myname", 100, "select * from mydb.table limit 10")
What is the proper way to use the varchar variable in the procedure?
Thank you beforehand.
Arman.
I think the way to go with that would be using Dynamic SQL.
MySQL does not support dynamic SQL in the way some DBMS do, but it does have the PREPARE/EXECUTE methods for creating a query and executing it. See if you can use them within your stored procedure.
Something like:
CREATE PROCEDURE `InsertQueryStore`( u VARCHAR(128), ID INT, q VARCHAR(1024) )
BEGIN
INSERT INTO querystore(`qID`, `qstring`, `user`) VALUES(ID, q, u);
PREPARE stmt FROM "DROP TABLE IF EXIST ?";
EXECUTE stmt USING ID;
DEALLOCATE PREPARE stmt;
/* etc */
END;
If you find you can't use the parameterised version with '?' in that context, just use CONCAT() to assemble it with the actual value in the string as it is already known at that stage.
There is a reasonable article about it here, mentioned in a previous SO post.