SQL 服务器游标中断

Question

我目前正在整理一个脚本，该脚本将在 SQL 服务器中暂存一些数据，以供另一个进程提取。但是，我正在构建的光标似乎被切断了。

例如，脚本应该查看所有名称类似于 TESTDB_ 的数据库，但在脚本中途中断，并且在打印出来时甚至没有完全生成语句。以下是脚本示例。

declare @sql varchar(8000), @envname varchar(10), @dbs varchar(100)
declare @db CURSOR
set @sql = ''
set @db = cursor for
    --dynamically get the current servers that are online
    select name from sys.databases where name like 'TESTDB_%'
open @db
fetch next from @db into @dbs
while @@fetch_status = 0
    begin
    set @sql=@sql+'
insert into DB1 (DBNAME,TEST1,TEST2,TEST3,TEST4,TEST5) 
select  DB_NAME() as ''DBNAME'', a.Test1, b.Test2, c.test3, d.test4, e.test5 
from ['+@dbs+'].[client].Table1 a 
    inner join ['+@dbs+'].[client].table2 b on a.ID=b.Id
    inner join ['+@dbs+'].[client].table3 c on c.ID=a.Id
    inner join ['+@dbs+'].[client].table4 d on d.ID=a.Id
    inner join ['+@dbs+'].[client].table5 e on e.ID=a.Id
'           
fetch next from @db into @dbs
    end
close @db
deallocate @db
print @sql 
set nocount off

Answer 1

试试这个：

SET NOCOUNT ON; 

declare @sql varchar(8000), @envname varchar(10), @dbs varchar(100)
declare @db CURSOR
set @sql = ''
set @db = cursor for
    --dynamically get the current servers that are online
    select name from sys.databases where name like 'TESTDB_%'
open @db
fetch next from @db into @dbs
while @@fetch_status = 0
    begin
    SELECT @sql+='
insert into DB1 (DBNAME,TEST1,TEST2,TEST3,TEST4,TEST5) 
select  DB_NAME() as ''DBNAME'', a.Test1, b.Test2, c.test3, d.test4, e.test5 
from ['+@dbs+'].[client].Table1 a 
    inner join ['+@dbs+'].[client].table2 b on a.ID=b.Id
    inner join ['+@dbs+'].[client].table3 c on c.ID=a.Id
    inner join ['+@dbs+'].[client].table4 d on d.ID=a.Id
    inner join ['+@dbs+'].[client].table5 e on e.ID=a.Id
'           
fetch next from @db into @dbs
    end
close @db
deallocate @db
print (@sql)

结果：

SQL 服务器游标中断

SQL Server Cursor Cutting Off

sql

sql-server

cursor