How do you proof data from an SQL-Query for completeness and validity?

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I'm searching for scientific methods to proof the returned data of an SQL-Query for completeness and validity.

For example if i query for all records which meet 3 defined conditions, how can i proof that this query really returns the right records and all of them?

The amount of data is too big to proof it manually.

asked 49 secs ago

jervis

34

How do you proof data from an SQL-Query for completeness and validity?