SELECT field1,field2 FROM table1 AS a
OUTER APPLY(
SELECT TOP 1 field3,field4 FROM table2 WHERE field3=a.field1
)AS b
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SELECT field1,field2 FROM table1 AS a
OUTER APPLY(
SELECT TOP 1 field3,field4 FROM table2 WHERE field3=a.field1
)AS b
相关文章：