18 lines
599 B
MySQL
18 lines
599 B
MySQL
|
set @front_app_blueprint_exists := (
|
||
|
|
select count(1)
|
||
|
|
from information_schema.columns
|
||
|
|
where table_schema = database()
|
||
|
|
and table_name = 'front_project'
|
||
|
|
and column_name = 'app_blueprint'
|
||
|
|
);
|
||
|
|
|
||
|
|
set @front_app_blueprint_sql := if(
|
||
|
|
@front_app_blueprint_exists = 0,
|
||
|
|
'alter table front_project add column app_blueprint longtext comment ''应用蓝图草稿JSON'' after preview_status',
|
||
|
|
'select ''front_project.app_blueprint already exists'''
|
||
|
|
);
|
||
|
|
|
||
|
|
prepare front_app_blueprint_stmt from @front_app_blueprint_sql;
|
||
|
|
execute front_app_blueprint_stmt;
|
||
|
|
deallocate prepare front_app_blueprint_stmt;
|