单项选择题

A. DECLARE @Myvar INT
B. SELECT * FROM [AAA]
C. CREATE DATABASE AAA
D. DELETE * FROM AAA

你可能感兴趣的试题

A、where AGE IS NULL
B、where AGE IS NOT NULL
C、where AGE = NULL
D、where NOT (AGE IS NULL)

A、SUM（列名）
B、MAX（列名）
C、COUNT（*）
D、AVG（列名）