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A. The HAVING clause can be used with aggregate functions in subqueries.
B. The WHERE clause can be used to exclude rows after dividing them into groups.
C. The WHERE clause can be used to exclude rows before dividing them into groups.
D. The aggregate functions and columns used in the HAVING clause must be specified in the SELECT list of the query.
E. The WHERE and HAVING clauses can be used in the same statement only if they are applied to different columns in the table.
答案:(A、C)
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