PostgreSQL SQL Migration Documentation Issue

[esetnik]

The table_postgres.sql should use DROP TABLE IF EXISTS syntax so that initial migration can be run on a new database.

DROP TABLE IF EXISTS qrtz_fired_triggers;
DROP TABLE IF EXISTS QRTZ_PAUSED_TRIGGER_GRPS;
DROP TABLE IF EXISTS QRTZ_SCHEDULER_STATE;
DROP TABLE IF EXISTS QRTZ_LOCKS;
DROP TABLE IF EXISTS qrtz_simple_triggers;
DROP TABLE IF EXISTS qrtz_cron_triggers;
DROP TABLE IF EXISTS qrtz_simprop_triggers;
DROP TABLE IF EXISTS QRTZ_BLOB_TRIGGERS;
DROP TABLE IF EXISTS qrtz_triggers;
DROP TABLE IF EXISTS qrtz_job_details;
DROP TABLE IF EXISTS qrtz_calendars;

[jhouserizer]

fine suggestion, thanks.

[esetnik]

Sorry about not submitting a PR. I didn't realize these scripts were contained in the repo. Thanks for the fix @jhouserizer.

[Ramblurr]

I think there was a typo in that commit: https://github.com/quartz-scheduler/quartz/pull/128/files#r115279504

[esetnik]

good catch @Ramblurr looks like it's a typo

[rraziel]

Hello, that typo noticed by @Ramblurr went into the 2.3.0 release.