I've to store user profiles in LDAP with 12 digits unique ID, so thought of using database by creating a sequence and accessing it in Java code(seq.nextVal()). But our company only supports mysql, but mysql don't support sequence.
Is there a work around to achieve this using mysql.
MySQL supports auto increment on INTEGER data type. Refer to
http://dev.mysql.com/doc/refman/5.0/en/example-auto-increment.html
If you want to make the field UNIQUE
, then you can set it as PRIMARY KEY
.
As an example, you can use ID BIGINT PRIMARY KEY AUTO INCREMENT
as your field.
If you need this value in your Java application, you can:
Generate the id in your MySQL database
Get the value in your Java application
Use the value to save it in your LDAP
As a test, this will assure that all your elements have 12 digits (based in your last comment):
CREATE TABLE uniqueids(id BIGINT PRIMARY KEY AUTO_INCREMENT);
INSERT INTO uniqueids VALUES(100000000000);
INSERT INTO uniqueids VALUES(null);
SELECT *
FROM uniqueids
Tested on MySQL 5.0
SQL Fiddle: http://www.sqlfiddle.com/#!2/8c508f/1
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