如果填充，则跳过其他语句

Question

I am trying to create an if else script to skip a record if there is a specific value in a column of the table and continue to insert records into a different table.

How do I create the script to perform this action?

IF EXISTS (Select * From Table A where X =1)
BEGIN
Do nothing
END
ELSE
BEGIN 
INSERT INTO TABLE Y
SELECT * FROM TABLE Z
END

Answer 1

Instead, write a single statement:

INSERT INTO TABLE Y
    SELECT *
    FROM TABLE Z
    WHERE NOT EXISTS (Select 1 From Table A where X = 1);

The conditional is not needed at all.

Answer 2

If you want it in a proc to execute, use it this way

create procedure usp_insert 
as
BEGIN 
declare @rowcount int = (Select count(*) From TableA where X <>'1')
Begin
if @rowcount>=1 
INSERT INTO TABLE Y
SELECT * FROM TABLE Z
end
END