Re: [pgAdmin4][Patch]: Fix for Feature #4334, RM #4496 and #4497

Hi Hackers,

I have added the support of Generated Columns (PG/EPAS 12) and also fixed RM #4496, #4497. 

During the implementation of that I have also fixed following issues that I encountered:

• User should not be able to provide Default value with Identity column.
• 'Drop Cascade' button to delete multiple columns should be disabled.
• Set "Not Null?" switch to 'Yes' when we create Identity column.
• Fix issue when we insert default value for the column and then remove it. It generates wrong msql.
• Fix issue when we provide the default value of a column and then select the datatype to serial/bigserial/smallserial, it generates wrong msql.

Modified/Added regression test cases for adding Identity column and Generated columns.

Please review it. 

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Thanks & Regards

Akshay Joshi

Sr. Software Architect

EnterpriseDB Software India Private Limited

Mobile: +91 976-788-8246