Oracle pl sql trigger updating using schematron in oracle soa suite 11g for validating xml
Many applications update all of the columns in a table -- setting them to their old value, rather then trying to figure out exactly which columns have been updated by the client. create or replace trigger test_trigger 2 after update of x,y on test 3 for each row 4 begin 5 if updating( 'X' ) then 6 dbms_output.put_line( 'X is being updated' ); 7 end if; 8 9 if updating( 'Y' ) then 10 dbms_output.put_line( 'Y is being updated' ); 11 end if; 12 end; 13 / Trigger created.SQL Notice in the last update it indicated that x and y both were being updated (which they were), but the update didn't change the value (both x and y were 1 prior to the update which set them to 1). You can use updating (column) but it will only tell you that the column itself is being updated and not if the value has changed.But these are two different triggers in separate pieces of code.The only way to pass a collection variable from one trigger to the other is to create a package with a collection variable such as VARRAY or PL/SQL TABLE in the package specification, populate it on the after-update row trigger, and read in the after-statement trigger—no easy task.Oracle Database 11 makes PL/SQL coding yet more efficient for programmers.In this installment, you will see some examples that offer an introductory glimpse into this new functionality.In the previous example, I placed dbms_output statements at various points to show how each section executes along what points.I updated four rows, with booking_ids 100, 101, 102, and 103, and you can see it called the before- and after-statement triggers once each and the row triggers (before and after) once per row.
Type ----------------------------------------- -------- ---------------------------- PAY_ID NUMBER(10) CREDIT_CARD_NO VARCHAR2(16) AMOUNT NUMBER(13,2) PAY_MODE VARCHAR2(1) RISK_RATING VARCHAR2(6) FOLLOW_UP VARCHAR2(1) There is a need to calculate the risk rating from the type of the payments and the amount and store that in the column RISK_RATING.
Oracle Trigger executes based on an event, say after a table update or before a login etc. Row level triggers are fired whenever a row changes and statement level fires whenever any statement ( for example a batch update ) executes.
Oracle Database automatically executes a trigger when certain conditions occur. Both row level and statement level can be defined with 3 different DMLs, insert,delete and update In all-together DML Triggers Statement level DML trigger will fire once per batch, Say I have Statement-lelvel before update trigger and I am updating the whole table using just one update command, the trigger will fire only once. “:new” and “:old” keywords can be used in row-level triggers only. w=220" class="size-full wp-image-1319 " title="old and new reference " alt="old and new reference " src="https://sqlandplsql.files.wordpress.com/2013/04/trigger_old_new.jpeg?
This a single piece of code, so you can pass variables just like any other monolithic PL/SQL code. booking_id='