What the use for the code

Question

I always see some tsql code use the code as where 1=0 or where 1=1, what's the code mean and what if i didn't add it in my code?

Answer 1

Hi @Wilder Nick

WHERE 1=1

It is often used to simplify dynamic SQL by avoiding conditional logic for the first condition. By starting with WHERE 1=1, you could dynamically add conditions based on certain logic without considering about whether it’s the first condition or the AND/OR keyword.

WHERE 1=0

I usually use it to get structure of a table or result set without any data.

Best regards,

Cosmog

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