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I am working with a database name xyz , table name a ,b, c, d. my question is if in table a name field , table b email field, table c phone number , change/update I want to make table d field upload to 1.
These tables has many fields, but I only want to change table d field when given three field change in three different table.
If I understand you question correctly,
I would add three columns to table d and set each one to 1 in the update trigger of the other tables. Then, in your selects, you can set a virtual column to 1 if all three column are set to 1 in table d.