加入两个表格以获得特定格式的第三列

Question

您好我有sqlserver中的Table1和Table2。我想要得到像Table3中的结果，如下图所示。

Answer 1

该查询给了我最后的答案：

SELECT COALESECE(t1.Label, t2.label) AS label, 
     t1.Value AS Table1_Value, 
     t2.Value AS Table2_Value 
FROM Table_1 t1 
FULL OUTER JOIN Table_2 t2 
    ON t1.Label = t2.Label 

Answer 2

使用此查询：

SELECT t1.Label, 
     t1.Value AS Table1_Value, 
     t2.Value AS Table2_Value 
FROM Table1 t1 
FULL OUTER JOIN Table2 t2 
    ON t1.Label = t2.Label 

Answer 3

尝试下面的查询

SELECT COALESCE(T1.LABEL,T2.LABEL) AS LABEL,T1.VALUE,T2.VALUE 
FROM TAB1 T1 FULL OUTER JOIN TAB2 T2 
ON T1.LABEL=T2.LABEL