错误：“ INTEGER”处或附近的语法错误

Question

I am using Flyway to migrate PostgreSQL tables for a spring web app and thus, I've written a set of SQL queries which add columns to an existing table, eg :

ALTER TABLE table_1 ADD COLUMN table_value_x TYPE INTEGER;
ALTER TABLE table_1 ADD COLUMN table_value_y TYPE VARCHAR(100);

After deploying war file on Tomcat, I get the following error :

ERROR: syntax error at or near "INTEGER"

Since Postgre is not so informative about its errors, I am looking for any kind of advice or suggestions on what this might be, thank you.

Answer 1

According to the docs , I believe you need to omit TYPE

ALTER TABLE table_1 ADD COLUMN table_value_x INTEGER;
ALTER TABLE table_1 ADD COLUMN table_value_y VARCHAR(100);

From the docs, the TYPE keyword is only used when you are changing the datatype of an existing column.

ALTER [ COLUMN ] column [ SET DATA ] TYPE data_type [ COLLATE collation ] [ USING expression ]

Answer 2

The TYPE keyword is only used when changing (altering) the column datatype. For adding columns, omit the TYPE keyword, as Matt wrote, and as it is shown here in the examples of the documentation (at the end of the page): https://www.postgresql.org/docs/9.4/static/sql-altertable.html

Answer 3

I suspect it might work if you get rid of the word 'TYPE'.

See example below, from the Postgres site.

ALTER TABLE distributors ADD COLUMN address varchar(30);

Edit: I see a whole bunch of people beat me to it.