H2 Database - Reorder columns using SQL

Question

I have a H2 database with 16 million entries and no primary key. I successfully added an auto-incrementing primary key using the following statements:

ALTER TABLE
    PUBLIC.ADDRESSES ADD ID BIGINT AUTO_INCREMENT;
ALTER TABLE
    PUBLIC.ADDRESSES ADD PRIMARY KEY (ID)

Now the problem is, that the column order is STREET, HOUSENUMBER, ..., ID , but I would like ID to be the first column of the table. It looks like there is a corresponding ALTER TABLE statement MySQL ( see here ), but I'm unable to adapt it to H2.

Long story short: How can I change the column order to ID, STREET, HOUSENUMBER ... ? Is there a solution similar to:

ALTER TABLE "ADDRESSES" MODIFY COLUMN "ID" BEFORE "STREET";

Any help is kindly appreciated.

Answer 1

H2 does not currently support re-ordering columns. You would need to run multiple statements:

• First, rename the column, then add a new column with the right name at the right position ( alter table add supports positioning), and finally drop the old column.

• Or, probably more elegant, use rename table and then create table ... as select .