试题详情
- 多项选择题Which two statements about subqueries are true? ()
A、A single row subquery can retrieve data from only one table.
B、A SQL query statement cannot display data from table B that is referred to in its subquery, unless table B is included in the main query's FROM clause.
C、A SQL query statement can display data from table B that is referred to in its subquery, without including table B in its own FROM clause.
D、A single row subquery can retrieve data from more than one table.
E、A single row subquery cannot be used in a condition where the LIKE operator is used for comparison.
F、A multiple-row subquery cannot be used in a condition where the LIKE operator is used for comparison.
- B,D
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