在Oracle中将三个查询的结果联接到一个查询中

Question

我想将三个查询的结果添加到一个查询中：

select file_name,count(distinct uniq_key) FILE_LOAD_REC_COUNT from STG_STRR_CTDI_CMTX2_TEMP1 group by file_name;
select file_name,count(distinct uniq_key)  ERR_REC_COUNT_M from STG_STRR_CTDI_ERR_DESC1 where err_desc in ('DUPLICATE RECORD','MISSING MANDATORY DEVICE DETAILS') group by file_name;
select file_name,count(distinct uniq_key)  ERR_REC_COUNT_O from STG_STRR_CTDI_ERR_DESC1 where err_desc not in ('DUPLICATE RECORD','MISSING MANDATORY DEVICE DETAILS') group by file_name;

我想要以下格式的结果：

FILE_NAME|FILE_LOAD_REC_COUNT|ERR_REC_COUNT_M|ERR_REC_COUNT_O
ABC.json|10|10|20|29

我该怎么做？

Answer 1

1. 统一所有两个表

SELECT文件名，            COUNT（DISTINCT uniq_key）FILE_LOAD_REC_COUNT，                  0 ERR_REC_COUNT_M，                  0 ERR_REC_COUNT_O    来自STG_STRR_CTDI_CMTX2_TEMP1    GROUP BY file_name    联合所有

SELECT文件名，                     0个FILE_LOAD_REC_COUNT个，                     COUNT（区分大小写）                                         当err_desc IN（'DUPLICATE RECORD'，                                                           “缺少强制性设备的详细信息”）然后uniq_key                                     END）ERR_REC_COUNT_M，                           COUNT（区分大小写）                                               当err_desc NOT IN（“重复记录”时，                                                                     “缺少强制性设备的详细信息”）然后uniq_key                                           END）ERR_REC_COUNT_O    来自STG_STRR_CTDI_ERR_DESC1    GROUP BY文件名

1. 联合后查询

SELECT文件名，        总和（FILE_LOAD_REC_COUNT）FILE_LOAD_REC_COUNT，            SUM（ERR_REC_COUNT_M）ERR_REC_COUNT_M，                总和（ERR_REC_COUNT_O）ERR_REC_COUNT_O 从   （

SELECT文件名，            COUNT（DISTINCT uniq_key）FILE_LOAD_REC_COUNT，                  0 ERR_REC_COUNT_M，                  0 ERR_REC_COUNT_O    来自STG_STRR_CTDI_CMTX2_TEMP1    GROUP BY file_name    联合所有

SELECT文件名，                     0个FILE_LOAD_REC_COUNT个，                     COUNT（区分大小写）                                         当err_desc IN（'DUPLICATE RECORD'，                                                           “缺少强制性设备的详细信息”）然后uniq_key                                     END）ERR_REC_COUNT_M，                           COUNT（区分大小写）                                               当err_desc NOT IN（“重复记录”时，                                                                     “缺少强制性设备的详细信息”）然后uniq_key                                           END）ERR_REC_COUNT_O    来自STG_STRR_CTDI_ERR_DESC1    GROUP BY file_name    ） GROUP BY file_name;