Catch exception from 'EXECUTE IMMEDIATE' : Execute immediate « PL SQL Statements « Oracle PL/SQL Tutorial






  1. Oracle PL/SQL Tutorial
  2. PL SQL Statements
  3. Execute immediate
SQL>
SQL> CREATE OR REPLACE FUNCTION tabcount (tab IN VARCHAR2, whr IN VARCHAR2 := NULL)
  2     RETURN PLS_INTEGER AUTHID CURRENT_USER
  3  IS
  4     str      VARCHAR2 (32767) := 'SELECT COUNT(*) FROM ' || tab;
  5     retval   PLS_INTEGER;
  6  BEGIN
  7     IF whr IS NOT NULL
  8     THEN
  9        str := str || ' WHERE ' || whr;
 10     END IF;
 11
 12     EXECUTE IMMEDIATE str
 13                  INTO retval;
 14  EXCEPTION
 15     WHEN OTHERS
 16     THEN
 17        DBMS_OUTPUT.put_line ('TABCOUNT ERROR: ' || DBMS_UTILITY.FORMAT_ERROR_STACK);
 18        DBMS_OUTPUT.put_line (str);
 19        RETURN NULL;
 20  END;
 21  /

SP2-0806: Function created with compilation warnings

SQL>








22.16.Execute immediate
22.16.1.Simple EXECUTE IMMEDIATE
22.16.2.Call EXECUTE IMMEDIATE in Pl/SQL block
22.16.3.Execute sql statement in a procedure
22.16.4.'execute immediate in' action
22.16.5.Define a procedure to drop a database object
22.16.6.Create a function to count table row
22.16.7.Use procedure to create an index dynamically
22.16.8.Call function and get result by using 'EXECUTE IMMEDIATE'
22.16.9.EXECUTE IMMEDIATE dynamic sql to alter session
22.16.10.Use 'execute immediate' to run a insert statement
22.16.11.select into rowtype then use it in 'execute immediate'
22.16.12.Quotation string
22.16.13.Use 'EXECUTE IMMEDIATE' to execute an update statement
22.16.14.Wrap 'EXECUTE IMMEDIATE' for current user
22.16.15.Wrap statement with 'BEGIN...END'
22.16.16.Catch exception from 'EXECUTE IMMEDIATE'
22.16.17.EXECUTE IMMEDIATE USING IN
22.16.18.Drop user, create user and grant permission with PL/SQL code
22.16.19.execute immediate into
22.16.20.Update row with 'execute immediate'