40 lines
903 B
Markdown
Executable File
40 lines
903 B
Markdown
Executable File
begin tran
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commit
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--rollback
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--声明一个变量
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```sql
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declare @tbname as nvarchar(100);
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```
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--声明一个游标用来遍历查询到的结果
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```sql
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declare C_userID CURSOR for
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select distinct TABLE_NAME from information_schema.COLUMNS
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where TABLE_NAME like '%_STC' or TABLE_NAME like '%_DYN' or TABLE_NAME like '%_RTK'
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```
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--打开游标
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```sql
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open C_userID;
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```
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--获取游标指向的数据
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```sql
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fetch next from C_userID into @tbname;
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while @@FETCH_STATUS = 0
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```
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BEGIN
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--执行具体的操作
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--删除未来的数据
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--DELETE
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--FROM [HiMonitorDB].[dbo].[11350069_STC]
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--WHERE aDatetime >'2020-02-03'
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--create NONCLUSTERED INDEX 索引名称 ON 表名(字段名)
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EXEC('delete from [HiMonitorDB].[dbo].['+@tbname+'] where aDatetime>getdate()')
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--游标指向下一条数据
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```sql
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FETCH next from C_userID into @tbname;
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```
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END
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--关闭游标
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CLose C_userID
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--释放游标
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DEALLOCATE C_userID; |