SQL full join+自定义条件列
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use testselect *from((select Col1,Col2 from Result where Col3='a')as T1(Col1,Col2_A)full join(select Col1,Col2 from Result where Col3='b')as T2(Col1,Col2_B)on T1.Col1=T2.Col1)
Col1 | Col2_A | Col1 |Col2_B
-----------------+------------+--------+-----------
select Col1,Col2_A,Col2_Bfrom((select Col1,Col2 from Result where Col3='a')as T1(Col1,Col2_A)full join(select Col1,Col2 from Result where Col3='b')as T2(Col1,Col2_B)on T1.Col1=T2.Col1)
Col1 | Col2_A | Col2_B
-----------------+------------+-----------
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