，LEFT JOIN有关问题，着
日期：2014-05-17 浏览次数：20490 次
在线等，，LEFT JOIN问题，，着急
SELECT
PC_DESC,
NVL(ROUND(CALL_DUR,0),0) AS CALL_DUR,
A.LOCALNET
FROM
APP_THRESHOLD_LOCALPC A
LEFT JOIN UN_F_CDR_DPCTRAF_15 B ON A.PC_DESC = B.DPC_DESC
AND DAY_ID = 20130904
AND HOUR_ID = 8
AND MI_ID = 30
SELECT
PC_DESC,
NVL(ROUND(CALL_DUR,0),0) AS CALL_DUR,
A.LOCALNET
FROM
APP_THRESHOLD_LOCALPC A
LEFT JOIN UN_F_CDR_DPCTRAF_15 B ON A.PC_DESC = B.DPC_DESC
WHERE 1=1
AND DAY_ID = 20130904
AND HOUR_ID = 8
AND MI_ID = 30
SELECT
PC_DESC,
NVL(ROUND(CALL_DUR,0),0) AS CALL_DUR,
A.LOCALNET
FROM
APP_THRESHOLD_LOCALPC A
LEFT JOIN UN_F_CDR_DPCTRAF_15 B ON A.PC_DESC = B.DPC_DESC
AND DAY_ID = 20130904
AND HOUR_ID = 8
AND MI_ID = 30
SELECT
PC_DESC,
NVL(ROUND(CALL_DUR,0),0) AS CALL_DUR,
A.LOCALNET
FROM
APP_THRESHOLD_LOCALPC A
LEFT JOIN UN_F_CDR_DPCTRAF_15 B ON A.PC_DESC = B.DPC_DESC
WHERE 1=1
AND DAY_ID = 20130904
AND HOUR_ID = 8
AND MI_ID = 30
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