Trigger if updating locallydating com

Trigger if updating

-- CREATE TABLE time_dimension ( time_key integer NOT NULL, day_of_week integer NOT NULL, day_of_month integer NOT NULL, month integer NOT NULL, quarter integer NOT NULL, year integer NOT NULL ); CREATE UNIQUE INDEX time_dimension_key ON time_dimension(time_key); CREATE TABLE sales_fact ( time_key integer NOT NULL, product_key integer NOT NULL, store_key integer NOT NULL, amount_sold numeric(12,2) NOT NULL, units_sold integer NOT NULL, amount_cost numeric(12,2) NOT NULL ); CREATE INDEX sales_fact_time ON sales_fact(time_key); -- -- Summary table - sales by time.

-- CREATE TABLE sales_summary_bytime ( time_key integer NOT NULL, amount_sold numeric(15,2) NOT NULL, units_sold numeric(12) NOT NULL, amount_cost numeric(15,2) NOT NULL ); CREATE UNIQUE INDEX sales_summary_bytime_key ON sales_summary_bytime(time_key); -- -- Function and trigger to amend summarized column(s) on UPDATE, INSERT, DELETE.

In particular, there cannot be multiple triggers for a given table that have the same trigger event and action time.

triggers (which are always row-level triggers, and may only be used on views) can return null to signal that they did not perform any updates, and that the rest of the operation for this row should be skipped (i.e., subsequent triggers are not fired, and the row is not counted in the rows-affected status for the surrounding is always ignored; it might as well be null.

And it checks that an employee's name is given and that the salary is a positive value.

Returns a Boolean value that indicates whether an INSERT or UPDATE attempt was made on a specified column of a table or view.PDF (US Ltr) - 27.0Mb PDF (A4) - 27.0Mb PDF (RPM) - 26.0Mb EPUB - 6.7Mb HTML Download (TGZ) - 6.5Mb HTML Download (Zip) - 6.5Mb HTML Download (RPM) - 5.6Mb Eclipse Doc Plugin (TGZ) - 7.1Mb Eclipse Doc Plugin (Zip) - 8.8Mb Man Pages (TGZ) - 168.1Kb Man Pages (Zip) - 275.6Kb Info (Gzip) - 2.5Mb Info (Zip) - 2.5Mb My SQL Backup and Recovery My SQL NDB Cluster 7.2 My SQL Globalization My SQL Information Schema My SQL Installation Guide My SQL and Linux/Unix My SQL and OS X My SQL Partitioning My SQL Performance Schema My SQL Replication My SQL Restrictions and Limitations Security in My SQL My SQL and Solaris Building My SQL from Source Starting and Stopping My SQL My SQL Tutorial My SQL and Windows If you drop a table, any triggers for the table are also dropped.Trigger names exist in the schema namespace, meaning that all triggers must have unique names within a schema.However, computed columns cannot be used in this context.) clause following the first one.Multiple columns can also be tested for INSERT or UPDATE actions by using COLUMNS_UPDATED.

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UPDATE() is used anywhere inside the body of a Transact-SQL INSERT or UPDATE trigger to test whether the trigger should execute certain actions.

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