我正在尝试组合 3 个表以获得如下所示的不同组合

Question

SELECT TYPE_DETAILS(a.column1,c.column2,c.column3) BULK COLLECT INTO OUT_DETAILS
FROM TABLE1 a
INNER JOIN TABLE2 b ON a.column2 = b.column2
INNER JOIN TABLE3 c ON a.column3 = c.column3;

我只想要 a.column1 的不同值的组合。如果我按如下方式应用 distinct，我会收到错误

SELECT TYPE_DETAILS(DISTINCT a.column1,c.column2,c.column3) BULK COLLECT INTO OUT_DETAILS
FROM TABLE1 a
INNER JOIN TABLE2 b ON a.column2 = b.column2
INNER JOIN TABLE3 c ON a.column3 = c.column3;

Answer 1

为什么不用子查询：

SELECT TYPE_DETAILS(column1,column2,column3) 
   BULK COLLECT INTO OUT_DETAILS FROM
(SELECT DISTINCT a.column1,c.column2,c.column3
FROM TABLE1 a
INNER JOIN TABLE2 b ON a.column2 = b.column2
INNER JOIN TABLE3 c ON a.column3 = c.column3);

我正在尝试组合 3 个表以获得如下所示的不同组合

I am trying to combine 3 tables for to get a distinct combination as below

oracle

oracle11g