以下哪项用于左连接()。
A: INNER JOIN
B: RIGHT OUTER JOIN
C: LEFT OUTER JOIN
D: CROSS JOIN
A: INNER JOIN
B: RIGHT OUTER JOIN
C: LEFT OUTER JOIN
D: CROSS JOIN
举一反三
- 左外连接是使用下列哪个关键字()。 A: LEFT JOIN B: JOIN C: CROSS JOIN D: LEFT OUTER JOIN
- RapidMiner中的Fast Join部件采用的是哪一种合并对齐方式? A: Inner Join B: Outer Join C: Left Join D: Right Join
- 以下是内连接的操作是( ) A: inner join B: left join C: ight join D: cross join
- 在MySQL中,用于实现左外连接的关键字是 A: CROSS JOIN B: INNER JOIN C: JOIN D: LEFT JOIN
- 给定下列两个表:()。 A: SELECT * FROM tab1 INNER JOIN tab2 ON col_1 = col_a B: SELECT * FROM tab1 LEFT OUTER JOIN tab2 ON col_1 = col_a C: SELECT * FROM tab1 RIGHT OUTER JOIN tab2 ON col_1 = col_a D: SELECT * FROM tab1 FULL OUTER JOIN tab2 ON col_1 = col_a