update@2016-09-20 12:41:11

2016-09-20 12:41:12 +08:00 · 2016-09-20 12:41:12 +08:00 · d48f781176
parent fd5aa31a1e
commit d48f781176
1 changed files with 3 additions and 0 deletions
--- a/sql/sql_examples.sql
+++ b/sql/sql_examples.sql
@ -20,3 +20,6 @@ insert into temp values("gr", 108333, "goooogle");

 # 查询表中某个字段(eleName)是否重复行
 select * from <table-name> where a="avalue" group by `eleName` having count(eleName)<>1
+
+# 查询某个字段不重复的记录
+select distinct domainKey from MetaInfo;