有A,B两个表,
A表是所有客户端的日志,数量在两百万
B表是客户端明细,数量在两万
现在需要筛选出符合某些条件的客户端的日志,SQL如下:
SELECT A.*
FROM `VIEW_DATA.basic_LOG.20160523` A
INNER JOIN (SELECT AGT_ID FROM VIEW_AGENT where AGT_GRP_ID in (999)) B
ON A.`BAS_AGT_ID` = B.AGT_ID
ORDER BY `BAS_TIME` DESC, `ID` DESC LIMIT 7;
1 SIMPLE basic_log index IX_BASIC_LOG_BAS_AGT_ID IX_BASIC_LOG_BAS_TIME_ID 10 7 100 Using where
1 SIMPLE a eq_ref PRIMARY PRIMARY 4 ocular3_data.20160523.basic_log.BAS_AGT_ID 1 100
1 SIMPLE b eq_ref PRIMARY PRIMARY 4 ocular3.a.AGT_GRP_ID 1 100 Using where; Using index