我想制作执行此类任务的代码:
check if a given database exists.
1a-->if no, then create a DB, make some tables in it and some columns too.
1.1-->Check if certain columns in a "list" exist.
Create those columns which don't exist yet.
1.2--> once 1.1 is done, populate these tables with some test data.
1b-->else check if certain tables exist and create them if they
don't exist. After that, do the stuff mentioned in 1.1 and 1.2
我是否制作了自己的代码,或者是否存在针对此类任务的“解决方案”?