Error: “Must declare the scalar variable” for insert statements in multiple database

Question

I created a SQL script to add an entry in different database. However, when I run the script through SQL Server Management Studio.

declare @address varchar(50)
s         


        

Answer 1

the variable @address only lives in the batch that its defined in, batches are delimited by the the go statement, where it goes out of scope.

try this:

declare @address varchar(50)
set @address = 'Hope'

insert into DB1.dbo.Address
 values (@address)

insert into DB2.dbo.Address
 values (@address)
go

Answer 2

It's because you are using go between the statement that declares the variable and the statement that uses it.

The go command is not an SQL command, it's a separator between sessions in Management Studio. Just remove all the go commands in your query, and you can use the variable all the way.

Answer 3

It's the GO statement.

all local variable declarations must be grouped in a single batch. This is done by not having a GO command until after the last statement that references the variable. (from MSDN)