Basic COUNTs 4

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  • nice question... thanks

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  • Thanks for this question! I recently re-learned this info, and the way I remembered it (I know it's probably a bad mnemonic but it works for me) is: "COUNT (ALL col) does not COUNT ALL"  -meaning it excludes NULLs.

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  • Interesting....
    thanks for the question, Steve

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  • Interesting question. "The ALL will be applied to all values, with the NULL eliminated" may be incorrect. I tried running the same query without COUNT() and found NULL value in the result set. 
    ALL tc.varcharcol
    FROM dbo.TheCounts AS tc

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