单选题Given the following two tables: TAB1 C1 C2 A 11 B 12 C 13 TAB2 CX CY A 21 C 22 D 23 The following results are desired: C1 C2 CX CY A 11 A 21 C 13 C 22 -- --D 23 Which of the following queries will yield the desired results?（）ASELECT * FROM tab1 INNER JOIN tab2 ON c1=cxBSELECT * FROM tab1 LEFT OUTER JOIN tab2 ON c1=cxCSELECT * FROM tab1 FULL OUTER JOIN tab2 ON c1=cxDSELECT * FROM tab1 RIGHT OUTER JOIN tab2 ON c1=cx
单选题
Given the following two tables: TAB1 C1 C2 A 11 B 12 C 13 TAB2 CX CY A 21 C 22 D 23 The following results are desired: C1 C2 CX CY A 11 A 21 C 13 C 22 -- --D 23 Which of the following queries will yield the desired results?（）
A
SELECT * FROM tab1 INNER JOIN tab2 ON c1=cx
B
SELECT * FROM tab1 LEFT OUTER JOIN tab2 ON c1=cx
C
SELECT * FROM tab1 FULL OUTER JOIN tab2 ON c1=cx
D
SELECT * FROM tab1 RIGHT OUTER JOIN tab2 ON c1=cx
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