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Question: I am using the PL/SQL execute immediate to generate dynamic SQL, but I don't know how to rap an error from dynamic SQL. I know that it is important to check for any non zero error code from PL/SQL when sending SQL to the database for execution, but I don't know the syntax to check for error in a PL/SQL execute immediate statement.
Answer: Inside PL/SQL you can trap and display any SQL error by testing the SQLCODE. It is a best practice to always use the 'when others' so that you trap any possible unexpected error from the execute immediate in your PL/SQL.
See my notes here, with working examples of execute immediate.
To trap an error when executing PL/SQL in a function or stored procedure, use the 'when others' clause.
In a single statement, you can trap a SQL error with execute immediate for both DML, DDL and SQL statements. Here we execute a DDL statement using execute immediate in PL/SQL and trap any non zero SQLCODE from the database:
Mf4880dw driver download. In a PL/SQL cursor loop you can capture execute immediate errors like this:
for i in mycir loop
Follow the link for more information on Late Binding and Runtime Binding in PL/SQL
For more information, see Dr. Hall's book on Advanced PL/SQL and download the working examples.
Execute Immediate Drop Table Error Table
Create Test Schema. We'll start by creating a simple table called approxt.It includes a value column we'll use for calculations and we'll be aggregating the results by US state and county. Declare ORA00942 exception; pragma ExceptionInit(ORA00942, -00942); begin execute immediate 'drop table approxt'; exception when ORA00942 then null; end; / create table approxt ( id number, volume.
Execute Immediate Using
- This statement dropped not only the brands table but also the foreign key constraint fkbrand from the cars table. If you execute again the statement to get the foreign key constraints in the cars table, you will not see any row returned. Oracle DROP TABLE PURGE example. The following statement drops the cars table using the PURGE clause.
- You tried to execute a SQL statement that references a table or view that either does not exist, that you do not have access to, or that belongs to another schema and you didn't reference the table by the schema name.
- You need to add the follow line: AUTHID CURRENTUSER. CREATE OR REPLACE PROCEDURE spupdateacounts( accountsfiledir IN VARCHAR2, accountsfilename IN VARCHAR2) AUTHID CURRENTUSER IS BEGIN EXECUTE IMMEDIATE 'CREATE OR REPLACE DIRECTORY extaccountsdir AS ' accountsfiledir '; EXECUTE IMMEDIATE 'grant read, write on directory extaccountsdir to myuser'; EXECUTE IMMEDIATE 'drop.
- Execute Immediate within a stored procedure keeps giving insufficient priviliges error. Here is the definition of the stored procedure: CREATE OR REPLACE PROCEDURE uspdropTable (schema VARCHAR, tblToDrop VARCHAR) IS BEGIN DECLARE vcnt NUMBER; BEGIN SELECT COUNT (.) INTO vcnt FROM alltables WHERE owner = schema AND tablename = tblToDrop; IF vcnt 0 THEN EXECUTE IMMEDIATE ('DROP TABLE.