Want to know where the problem is

CodePudding user response:

The delete sf, not declare sf.

CodePudding user response:

Declare @ sf varchar (20)
Select @ SJD='aaa'

CodePudding user response:

Declare a variable data type
Variable names are usually begins with the @

The assignment is to use the Set

For example,
Declare @ var int

The Set @ Var='low'

CodePudding user response:

For writing the wrong

Declare a variable data type
Variable names are usually begins with the @

The assignment is to use the Set

For example,
Declare @ var nvarchar (20) -- just here to write the character after the int and does not match the

The Set @ Var='low'