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Order of fields in WHERE

Order of fields in WHERE

Order of fields in WHERE


If I use a composite index, say Field1, Field2, Field3, the order in which these fields are listed in WHERE clause will be important? And if yes, then how should I list them: from top to bottom or from bottom to top?

This is ACCESS database.

Thank you!


RE: Order of fields in WHERE

No. It doesn't matter what order you use.

Do note however that when you mix "AND" and "OR" operators in a WHERE clause, "AND" us evaluated first and then "OR". Use parentheses to ensure that the order of evaluation is what you intend.

RE: Order of fields in WHERE


Thank you!



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