COUNT(DISTINCT)? ???? SQL Server?? ??? ???? ??? ???? ??? ??????
Jan 14, 2025 pm 06:46 PM
SQL Server?? ??? ???? ??? ????? ??
????? ?? ?? ?? ?? ???? ?? ??? ???? ???? ?????. SQL Server? COUNT(DISTINCT) ??? ???? ?? ?? ???? ??? ??? ?????. ?? ??? ??? ???? ?? ??? ??? ?????? ??? ? ?? ?????.
?? ??, ???? ??, ???? ??, ?? ?? ? ?? ??? ?? ??? ???? cm_production ???? ???????. ??? ??? ???? ?? ? ?? ???? ??? ??? ???? ??? ?? ???? ????.
??? ??? ?? ??? ??? ????.
DECLARE @push_number INT; SET @push_number = [HERE_ADD_NUMBER]; SELECT DISTINCT COUNT(*) AS Count, program_type AS [Type] FROM cm_production WHERE push_number=@push_number GROUP BY program_type
? ??? ???? ??? ???? ???? ??? ???? ???? ??? ?? ???? ??? ?????. ??? ??? ?? ??? COUNT(DISTINCT <expression>) ??? ???? ? ????. ? ??? ?? ???? ?? Null? ?? ??? ?? ??? ????? ?????.
??? SQL ??? ??? ????.
SELECT program_type AS [Type],
COUNT(DISTINCT program_name) AS [Count]
FROM cm_production
WHERE push_number = @push_number
GROUP BY program_type
? ??? ??? COUNT(DISTINCT program_name)? ???? ? ???? ??? ??? push_number? ?? ??? ???? ??? ???? ?????. ?? ?????? ? ?? ?? ??? ???? ?????.
? ??? COUNT(DISTINCT)? ???? SQL Server?? ??? ???? ??? ???? ??? ??????? ?? ?????. ??? ??? PHP ??? ????? ?? ?? ??? ?????!
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