WebFeb 9, 2024 · The cursor variable is opened and given the specified query to execute. The cursor cannot be open already, and it must have been declared as an unbound cursor … WebThe cursor variable is specified as an IN OUT parameter so that the result set is made available to the caller of the procedure: CREATE OR REPLACE PROCEDURE emp_by_job ( p_job VARCHAR2, p_emp_refcur IN OUT SYS_REFCURSOR ) IS BEGIN OPEN p_emp_refcur FOR SELECT empno, ename FROM emp WHERE job = p_job; END;
Working with cursors and dynamic queries in PL/SQL
WebOct 15, 2007 · In 10g, best you can do is a dbms_sql cursor, you could write a pipelined function to return it as a ref cursor, but you would have to know AT COMPILE TIME how many columns there were, and their datatypes and their names. (since you have to create an object type to match the output specification of the pipelined function) WebHow to use a variable from a cursor in the select statement of another cursor in pl/sql. I want to run a query, get the results and then iterate through the results of that query with another select statement using the values of the first statement in my 2nd statement … dahood aim train cursor
How can I change my cursor to a .cur file cursor? - Ask …
WebDescription If you are using an explicit cursor to fetch one or more rows, always fetch into a record that is declared based on that cursor, as in "my_rec my_cur%ROWTYPE;" That way, you avoid having to declare lots of individual variables; you don't have to remember and do all the typing to use %TYPE for each variable; when the cursor's SELECT … WebDECLARE cur_variable CURSOR FOR SELECT * FROM courses; OPEN cur_variable FETCH NEXT FROM cur_variable; GO Stored procedure output parameters USE model; GO CREATE PROCEDURE info_course @varCur CURSOR VARYING OUTPUT AS SET NOCOUNT ON; SET @varCur = CURSOR FORWARD_ONLY STATIC FOR SELECT … WebThe following diagram illustrates how to use a cursor in PostgreSQL: First, declare a cursor. Next, open the cursor. Then, fetch rows from the result set into a target. After that, check if there is more row left to fetch. If yes, go to step 3, otherwise, go to step 5. Finally, close the cursor. bioethics luc