Oracle's syntax for creating a trigger based on two tables : Create Trigger « Trigger « Oracle PL / SQL






  1. Oracle PL / SQL
  2. Trigger
  3. Create Trigger

Oracle's syntax for creating a trigger based on two tables

  

SQL>
SQL>
SQL>
SQL> CREATE TABLE myTable1 (a INTEGER, b CHAR(10));

Table created.

SQL>
SQL> CREATE TABLE myTable2 (c CHAR(10), d INTEGER);

Table created.

SQL>
SQL>
SQL> CREATE TRIGGER trig1
  2      AFTER INSERT ON myTable1
  3      REFERENCING NEW AS newRow
  4      FOR EACH ROW
  5      WHEN (newRow.a <= 10)
  6      BEGIN
  7          INSERT INTO myTable2 VALUES(:newRow.b, :newRow.a);
  8      END trig1;
  9  

Trigger created.

SQL>
SQL> insert into myTable1 values(1,'a');

1 row created.

SQL> insert into myTable1 values(2,'b');

1 row created.

SQL>
SQL> select * from myTable1;

         A B
---------- ----------
         1 a
         2 b

SQL> select * from myTable2;

C                   D
---------- ----------
a                   1
b                   2

SQL>
SQL> drop table myTable1;

Table dropped.

SQL> drop table myTable2;

Table dropped.

SQL>








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