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Table-Level Validation
By Richard Rost   Richard Rost on Twitter Richard Rost on LinkedIn Email Richard Rost   15 months ago

Table-Level Validation Rule, Check Multiple Fields


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In this video, I'll teach you how you can setup multiple-field validation rules in your Microsoft Access tables so that you can compare different field values before allowing a record to be saved.

Natalie from Detroit, Michigan (a Gold Member) asks: When closing out my drawer at the end of each night, I like to enter the total amount of cash counted, and then the total amount taken out for the deposit. The deposit amount cannot be larger than the total count, of course, but once in a while someone types it in wrong and it messes everything up. Is there a way to have Access check this and not let them type in a value that would make the drawer go negative, or below $100, which is the amount I like to leave in the drawer for the next day?

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Members will learn how to use a BeforeUpdate event with Dlookup or Dsum functions in order to check values in other records, or even other tables altogether.

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Table-Level Validation Rules: https://599cd.com/ACX28

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Simple Validation Rules: https://599cd.com/Validation

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Keywords: TechHelp Access Validation rules for multiple fields, table level validation rule, another field, beforeupdate event, before update event, dsum function  PermaLink  Table-Level Validation in Microsoft Access