Create table syntax not working in hsql

问题

I am new to hsqldb. I am developing simple application to get the some input from user. So Searched for embedded database and found hsqldb is the solution for my requirement.

I have some create table syntax but it throws exception.

(This Query executed by using Netbeans Database services)

Query :

CREATE TABLE  company (
  comp_name varchar(100) NOT NULL,
  comp_id int(40) NOT NULL AUTO_INCREMENT,
  PRIMARY KEY (comp_id)
);

CREATE TABLE  company (
  comp_name varchar(100) NOT NULL,
  comp_id int(40) NOT NULL IDENTITY
);

hsql db throws the error :

Error code -5581, SQL state 42581: unexpected token: ( : line: 3
Line 2, column 1

Execution finished after 0 s, 1 error(s) occurred.

Kindly help me out..

Thanks in Advance..

Cheers...!

回答1:

Use INT or INTEGER without specify the field length as it is not required for Int type fields. It is required for VARCHAR and DECIMALetc. type fields.

 CREATE TABLE  company (
   comp_name varchar(100) NOT NULL,
   comp_id int
 );

To auto increment:

 ALTER TABLE company ALTER COLUMN comp_id 
 SET GENERATED BY DEFAULT AS IDENTITY (START WITH 1, INCREMENT BY 1);

Alternatively:

 CREATE TABLE  company (
   comp_name varchar(100) NOT NULL,
   comp_id int GENERATED BY DEFAULT AS IDENTITY 
                                         (START WITH 1, INCREMENT BY 1) NOT NULL
 );

You may also add the PRIMARY_KEY as below:

 CREATE TABLE  company (
   comp_name varchar(100) NOT NULL,
   comp_id INTEGER NOT NULL,
   PRIMARY KEY (comp_id)
 );

来源：https://stackoverflow.com/questions/13206473/create-table-syntax-not-working-in-hsql

标签

java

hsqldb

create-table