ignore generated columns when [recreateTable]

[zakaria-chahboun]

• Do only one thing
• Non breaking API changes
• Tested

What did this pull request do?

This pull request fix this issue:
go-gorm/gorm#5590

cannot INSERT into generated column

I just created another method for ddl called getSafeColumns. It did the exact work of getColumns except it ignore the GENERATED COLUMNS.

User Case Description

This is important for recreateTable of the Migrator.

// Old
columns := createDDL.getColumns()
// New
columns := createDDL.getSafeColumns()

[jinzhu]

Hi @zakaria-chahboun

Can you just update the getColumns method to this?

Thank you.

[zakaria-chahboun]

You're welcome
what about the gorm-sqlite-cipher ?
It should also be updated with this solution