用来限定返回行的查询条件的子句是()
A. WHERE子句
B. ORDER BY 子句
C. LIMIT子句
D. GROUP BY 子句
用来对查询结果进行排序的子句是()
A. WHERE子句
B. ORDER BY 子句
C. LIMIT子句
D. GROUP BY 子句
用来实现对记录分组的子句是()
A. WHERE子句
B. ORDER BY 子句
C. LIMIT子句
D. GROUP BY 子句
用来限制SELECT语句返回记录数的是()
A. WHERE子句
B. ORDER BY 子句
C. LIMIT子句
D. GROUP BY 子句