I have a requirement where I need to Alter (Add 2 columns) and then update the same table.
Here is the query I tried:
ALTER TABLE A
ADD c1 int,c2 varchar(10)
UPDATE A set c1 = 23, c2 = 'ZZXX'
I need to run the above two queries at a time.
I am using Talend ETL tool, in this we have a component tMssqlrow, which allow us to run multiple queries (I am using 10 to 15 update queries in single component).
But the above query is not working.
I tested in DataBase Microsoft SQL. i am getting the below error :
Msg 207, Level 16, State 1, Line 5
Invalid column name 'c1'. Msg 207,
Level 16, State 1, Line 5
Invalid column name 'c2'.
can any one help me resolve this problem.
You can't do this exactly in a single statement (or batch) and it seems the tool you are using does not support GO
as a batch delimiter.
You can use EXEC
to run it in a child batch though.
ALTER TABLE A
ADD c1 INT, c2 VARCHAR(10);
EXEC('
UPDATE A
SET c1 = 23,
c2 = ''ZZXX'';
');
NB: All single quotes in the query need to be doubled up as above to escape them inside a string literal.
Or alternatively you could achieve similar results in a single statement with the aid of some default constraints.
ALTER TABLE A
ADD c1 INT NULL CONSTRAINT DF_A_c1 DEFAULT 23 WITH VALUES,
c2 VARCHAR(10) CONSTRAINT DF_A_c2 NULL DEFAULT 'ZZXX' WITH VALUES;
But this is not exactly the same as the original query as the default constraints will be left behind and may need to be dropped.