SqlServer_查詢帶有null的記錄

字段的三種不一樣狀態web select distinct status from t_table (NULL) XXX YYY 不一樣狀態的記錄數sql select count(1) from t_table 35709 select count(1) from t_table where status = 'XXX' 17579 XXX select count(1) from t_tabl

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