PL/SQL – Complex Queries (Job Interviews) (srinimf.com) PL/SQL – Difficult Questions (srinimf.com) Share this: Tweet Share WhatsApp More Srini Data Engineer with deep AI and Generative AI expertise, crafting high-performance data pipelines in PySpark, Databricks, and SQL. Skilled in Python...
This Oracle tutorial explains how tocreate an AFTER DELETE Triggerin Oracle with syntax and examples. Description AnAFTER DELETE Triggermeans that Oracle will fire this trigger after the DELETE operation is executed. Syntax The syntax to create anAFTER DELETE Triggerin Oracle/PLSQL is: ...
This Oracle tutorial explains how tocreate a BEFORE UPDATE Triggerin Oracle with syntax and examples. Description ABEFORE UPDATE Triggermeans that Oracle will fire this trigger before the UPDATE operation is executed. Syntax The syntax to create aBEFORE UPDATE Triggerin Oracle/PLSQL is: ...
PL/SQL Triggers - Learn about PL/SQL triggers, their types, and how to use them effectively in your database applications.
Changes in Oracle Database Release 18c, Version 18.1 1 Overview of PL/SQL 2 PL/SQL Language Fundamentals 3 PL/SQL Data Types 4 PL/SQL Control Statements 5 PL/SQL Collections and Records 6 PL/SQL Static SQL 7 PL/SQL Dynamic SQL 8 PL/SQL Subprograms 9 PL/SQL Triggers 10 PL/SQL Packag...
In this example, after each update on ‘SALARY’ column ofemployee_salarywith hike greater than 50000, it will fire a ‘after update’ trigger and insert the new updated data into aemployee_salary_logtable. 2.1 Create tables and trigger. ...
In this example, we have created a trigger which will insert rows into an audit table before each updating of transaction table. Whenever user UPDATE data ofbank_transactions, the old data will be inserted intobank_transactions_auditby trigger for audit or backup purpose. ...
PL/SQL Trigger: Exercise-6 with Solution Write a code in PL/SQL to create a trigger that restricts the insertion of new rows if the total of a column's values exceeds a certain threshold. Sample Solution: PL/SQL Code: -- Create the orders tableCREATETABLEorders(order_id NUMBERPRIMARYKEY...
ALTERTABLEtable_nameDISABLEALLTRIGGERS;Code language:PostgreSQL SQL dialect and PL/pgSQL(pgsql) In this syntax, you specify the name of the table to which the triggers that you want to disable belong. For example, to disable all triggers associated with thecustomerstable, you use the followi...
plsql_trigger_source schema Name of the schema for the trigger to be created.Default:your schema. trigger Name of the trigger to be created. Triggers in the same schema cannot have the same names. Triggers can have the same names as other schema objects—for example, a table and a trig...