mssql動態語句

有時候需要執行動態拼接的sql，這就用到了動態語句

exec 執行傳入變數可以，但是如果想傳出引數，需要用到sp_executesql 並且注意引數需要是國家字符集

set quoted_identifier off

set @v_sql='select @n_num=count(1),@v_val=sum(dvalue) from '+@tname+ ' where id='+@staid

exec   sp_executesql   @v_sql,

n'@n_num numeric output,@v_val numeric output',

@n_num output,@v_val  output

-- 在這裡使用變數@n_num，@v_val的值

set quoted_identifier on

但是在返回游標的動態sql中不支援，我們可以使用全域性臨時表解決

if object_id('tempdb..##gt__data_tmp',n'u') is not null

drop table ##gt_data_tmp

set    @v_sql = @str + ' into ##gt_data_tmp  from ***'

execute(@v_sql)

MSSQL經典語句

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MSSQL經典語句

1.按姓氏筆畫排序 select from tablename order by customername collate chinese prc stroke ci as 2.資料庫加密 select encrypt 原始密碼 select pwdencrypt 原始密碼 select pwdco...

MSSQL備份語句

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