<?xml version="1.0" encoding="UTF-8"?>
<databaseChangeLog
  xmlns="http://www.liquibase.org/xml/ns/dbchangelog"
  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  xsi:schemaLocation="http://www.liquibase.org/xml/ns/dbchangelog
                      http://www.liquibase.org/xml/ns/dbchangelog/dbchangelog-3.4.xsd"
  logicalFilePath="changelog-4.1">

  <changeSet author="author" id="changelog-4.1-mssql">

    <preConditions onFail="MARK_RAN">
      <dbms type="mssql" />
    </preConditions>

    <sql>
      IF EXISTS (SELECT * FROM sysobjects WHERE type = 'TR' AND name = 'tg_groups_delete')
      BEGIN
      DROP TRIGGER tg_groups_delete
      END;
    </sql>

    <sql>
      CREATE TRIGGER tg_groups_delete
      ON tc_groups FOR DELETE
      AS BEGIN
      UPDATE tc_groups SET groupid = NULL WHERE groupid IN (SELECT deleted.id FROM deleted)
      END
    </sql>

    <sql>
      IF EXISTS (SELECT * FROM sysobjects WHERE type = 'TR' AND name = 'tg_users_delete')
      BEGIN
      DROP TRIGGER tg_users_delete
      END;
    </sql>

    <sql>
      CREATE TRIGGER tg_users_delete
      ON tc_users FOR DELETE
      AS BEGIN
      DELETE FROM tc_user_user WHERE manageduserid IN (SELECT deleted.id FROM deleted)
      END
    </sql>

  </changeSet>

</databaseChangeLog>
