使用变量作为 table 名称失败

Question

为什么会失败并显示以下错误消息：

Msg 102, Level 15, State 1, Line 1 Incorrect syntax near 'reporting_rawdata_v2'.

table 的名称是 "dbo.reporting_rawdata_v2" 但是 with/without "dbo" 它仍然失败...

Use reporting2 
Go

Declare @Backupdate varchar(25), @sql NVARCHAR(max)
Set @Backupdate = REPLACE(REPLACE(CAST(CONVERT(VARCHAR(20), SYSDATETIME(), 100) as varchar),' ','_'),':', '')
Select @Backupdate

SET @sql = 'Select * Into reporting_rawdata_BACKUP_' + @Backupdate + 'From reporting_rawdata_v2';
EXEC (@sql);

Answer 1

在动态命名的 table 和 From

之间没有 space

SET @sql = 'Select * Into reporting_rawdata_BACKUP_' + @Backupdate + ' From reporting_rawdata_v2';
EXEC (@sql);

使用变量作为 table 名称失败

Using a variable as table name fails

sql

tsql

sql-server

execute