Question

我正在使用这三个表，我想要table3详细信息table_1.field_id。现在我正在获得没有table_1.field_id的完整记录。如何将table1.field_id与table_3记录包括在内？

查询：

select 
   fld_id, fld_name, fld_date 
from 
   table_3
where 
   fld_item_id in (select fld_id 
                   from tbl_table2 
                   where fld_cust_id in (select fld_id 
                                         from table_1 
                                         where fld_ref_id = 100));

表3 ：

FLD_ID FLD_Name FLD_DATE     FLD_ITEM_ID
101       hai   12-01-2013   10

表2 ：

FLD_ID FLD_value FLD_CUST_ID  FLD_DATE     
10       100     10000        12-01-2013

表1 ：

FLD_ID FLD_NAME fld_ref_id  FLD_DATE
10000  Vinoth   100         12-01-2013

Answer 1

尝试（按照Barry Young的建议）

SELECT B.fld_cust_id Table1FieldId, C.fld_id, C.fld_name, C.fld_date 
FROM tbl_table2 B
INNER JOIN table_3 C ON C.fld_item_id = B.fld_id
WHERE A.fld_ref_id=100

或（如果您需要table_1中的其他字段）

SELECT A.fld_id Table1FieldId, C.fld_id, C.fld_name, C.fld_date 
FROM table_1 A
INNER JOIN tbl_table2 B ON B.fld_cust_id = A.fld_id 
INNER JOIN table_3 C ON C.fld_item_id = B.fld_id
WHERE A.fld_ref_id=100

从三个表sql获取记录

1 个答案: