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ALTER TABLE flow_task ADD COLUMN flow_status varchar(20);
COMMENT ON COLUMN flow_task.flow_status IS '流程状态（0待提交 1审批中 2审批通过 4终止 5作废 6撤销 8已完成 9已退回 10失效 11拿回）';
COMMENT ON COLUMN flow_instance.flow_status IS '流程状态（0待提交 1审批中 2审批通过 4终止 5作废 6撤销 8已完成 9已退回 10失效 11拿回）';
COMMENT ON COLUMN flow_his_task.flow_status IS '流程状态（0待提交 1审批中 2审批通过 4终止 5作废 6撤销 8已完成 9已退回 10失效 11拿回）';
ALTER TABLE sys_social
ALTER COLUMN access_token TYPE varchar(2000),
ALTER COLUMN refresh_token TYPE varchar(2000);