Update from Sync Service

数据库知识库/工具脚本/循环批量删除数据库表.md

@@ -1,39 +1,55 @@
---创建临时表  
-create table #Man(  
-id int identity(1,1),  
-tbName nvarchar(50)  
-)   --往临时表插入数据  
-insert into #Man  
-select name from sys.tables  
-where create_date\<='2018-03-10 15:36:35.687' and name not in ('DeviceNetState','EphInfo','FilterStatistic','UserInfo','AlmInfo')  
+--创建临时表
+```sql
+create table #Man(
+```
+id int identity(1,1),
+tbName nvarchar(50)
+)   --往临时表插入数据
+```sql
+insert into #Man
+select name from sys.tables
+where create_date<='2018-03-10 15:36:35.687' and name not in ('DeviceNetState','EphInfo','FilterStatistic','UserInfo','AlmInfo')
+```
 order by create_date desc
- 
---确认  
-select * from #Man
- 
-commit  
-rollback  
-begin tran
-   
 
---定义循环变量  
-declare @i int  
-set @i = 1  
-declare @count int  
+--确认
+```sql
+select * from #Man
+
+```
+commit
+rollback
+begin tran
+
+
+--定义循环变量
+```sql
+declare @i int
+set @i = 1
+declare @count int
 select @count = count(*) from #Man
- 
+
+```
 --print @count
- 
-declare @str nvarchar(500)  
+
+```sql
+declare @str nvarchar(500)
 declare @tb nvarchar(50)
- 
-while(@i \<= @count) begin
- 
-select @tb = isnull(tbName, '') from #Man where id = @i  
---循环执行语句  
-set @str = 'drop table [' + @tb+ ']'  
+
+```
+while(@i <= @count) begin
+
+```sql
+select @tb = isnull(tbName, '') from #Man where id = @i
+```
+--循环执行语句
+```sql
+set @str = 'drop table [' + @tb+ ']'
+```
 exec(@str)
- 
-set @str = ''  
-set @i = @i + 1  
+
+```sql
+set @str = ''
+set @i = @i + 1
+```
 end