与从 2 个不为空的表中获取数据相关的数据库查询

Question

select FCPDD.AUDIENCE_ID,FCPD.APPLICATION_RULE_ID,FCPD.PROGRAMME_PART,FCPD.TARGET_DATE,FCPD.TIMEBAND_START_TIME,
FCPD.TIMEBAND_END_TIME,FCPD.DAY_NUMBER
FROM FPR_CHANNEL_PROCESS_DATA FCPD,FPR_CHANNEL_PROCESS_DATA_DTL FCPDD 
WHERE FCPD.CHANNEL_PROCESS_DATA_ID=FCPDD.CHANNEL_PROCESS_DATA_ID and FCPD.TARGET_DATE is not null and FCPDD.AUDIENCE_ID is not null 
and FCPD.APPLICATION_RULE_ID is not null and FCPD.PROGRAMME_PART is not null and FCPD.TIMEBAND_START_TIME is not null
and FCPD.TIMEBAND_END_TIME is not null and FCPD.DAY_NUMBER is not null 

我们可以把上面的查询写成精确的形式吗

Answer 1

参考链接： Using IS NOT NULL for multiple columns

试试这个，

SELECT FCPDD.AUDIENCE_ID,FCPD.APPLICATION_RULE_ID,FCPD.PROGRAMME_PART,FCPD.TARGET_DATE,FCPD.TIMEBAND_START_TIME,
FCPD.TIMEBAND_END_TIME,FCPD.DAY_NUMBER
FROM FPR_CHANNEL_PROCESS_DATA FCPD,FPR_CHANNEL_PROCESS_DATA_DTL FCPDD 
WHERE FCPD.CHANNEL_PROCESS_DATA_ID=FCPDD.CHANNEL_PROCESS_DATA_ID AND 
NOT(FCPD.TARGET_DATE IS NULL 
OR FCPDD.AUDIENCE_ID IS NULL 
OR FCPD.APPLICATION_RULE_ID IS NULL 
OR FCPD.PROGRAMME_PART IS NULL 
OR FCPD.TIMEBAND_START_TIME IS NULL
OR FCPD.TIMEBAND_END_TIME IS NULL 
OR FCPD.DAY_NUMBER IS NULL )

试试这个：

SELECT FCPDD.AUDIENCE_ID,FCPD.APPLICATION_RULE_ID,FCPD.PROGRAMME_PART,FCPD.TARGET_DATE,FCPD.TIMEBAND_START_TIME,
FCPD.TIMEBAND_END_TIME,FCPD.DAY_NUMBER
FROM FPR_CHANNEL_PROCESS_DATA FCPD,FPR_CHANNEL_PROCESS_DATA_DTL FCPDD 
WHERE (FCPD.CHANNEL_PROCESS_DATA_ID=FCPDD.CHANNEL_PROCESS_DATA_ID AND 
NOT(FCPD.TARGET_DATE IS NULL 
OR FCPDD.AUDIENCE_ID IS NULL 
OR FCPD.APPLICATION_RULE_ID IS NULL 
OR FCPD.PROGRAMME_PART IS NULL 
OR FCPD.TIMEBAND_START_TIME IS NULL
OR FCPD.TIMEBAND_END_TIME IS NULL 
OR FCPD.DAY_NUMBER IS NULL ))