How to return many rows on a PLSQL database?

How to return many rows on a PLSQL database?

You can then call that in SQL*Plus by declaring a host variable (most front-end languages will treat a function returning a SYS_REFCURSOR very much like a SELECT statement that returns a cursor) SQL> variable rc refcursor; SQL> exec :rc := get_emps_in_dept ( 30 ); PL/SQL procedure successfully completed.

How to display multiple rows in one line in SQL?

This allows multiple table column values to be displayed in a single column, using the listagg built-in function : You can write a PL/SQL function to display multiple rows values on a single line. Martin Chadderton has written a Pl/SQL function called “stragg” that you can define to display multiple SQL rows on one single line.

Is it possible to display multiple columns in the same row in Oracle?

Until 11g, Oracle SQL did not have a direct mechanism for allowing multiple values from the same column to be displayed in the same row of output. SQL is designed not to disallow repeating values on a single line of output, but Oracle has several tricks for allowing repeating groups of same-column values on a single line of output.

How to return select data from PL / SQL?

One way of return select data from PL/SQL is using Oracle table functions. Below is an example where the line SELECT * FROM table_a where test_a = par1; should be replaced by your select statement + change the table name. The simplest possible approach is to return a cursor.

What to do when there is an oracle error in PL / SQL?

For example, PL/SQL raises the predefined exception NO_DATA_FOUND if a SELECT INTO statement returns no rows. To handle other Oracle errors, you can use the OTHERS handler. The functions SQLCODE and SQLERRM are especially useful in the OTHERS handler because they return the Oracle error code and message text.

What happens if there is a raised exception in PL / SQL?

Remember, if it cannot find a handler for a raised exception, PL/SQL returns an unhandled exception error to the host environment, which determines the outcome. For example, in the Oracle Precompilers environment, any database changes made by a failed SQL statement or PL/SQL block are rolled back.

How to find number of rows affected by an update in PL / SQL?

I have a PL/SQL function (running on Oracle 10g) in which I update some rows. Is there a way to find out how many rows were affected by the UPDATE? When executing the query manually it tells me how many rows were affected, I want to get that number in PL/SQL. You use the sql%rowcount variable.

How to return multiple rows from the stored procedure?

(Oracle PL/SQL) I want to create a stored procedure with one argument which will return different sets of records depending on the argument. What is the way to do this?