Hibernate generates wrong insert statement for DB2

Question

I'm using hibernate with DB2 database. When I'm running spring batch job I have following exception:

org.springframework.dao.InvalidDataAccessResourceUsageException: could not prepare statement; SQL [insert into "PERSON" (id, first_name, last_name) values (default, ?, ?)]; nested exception is org.hibernate.exception.SQLGrammarException: could not prepare statement

When I paste query from log to IBM Data Studio I see that query is seems to lack quotes on field names. The valid statement would be

insert into "PERSON" ("id", "first_name", "last_name") values (default, 'John122', 'Doe21')

How can I fix this?

Thanks

Answer 1

There's a difference between the following two statements:

create table Person ( id integer, first_name vargraphic(80), last_name vargraphic(80) );

and

create table "Person" ( "id" integer, "first_name" vargraphic(80), "last_name" vargraphic(80) );

The first statement creates the table PERSON, with column ID, FIRST_NAME and LAST_NAME (mind the uppercase!). The second statement creates the table Person with the columns id, first_name and last_name.

It seems that you created your table with the second definition, but are trying to update it with a statement correct for the first table definition.

TL;DR: DB2 always creates all table and column names in uppercase, unless the names are between (double) quotes.