TJDB: As a user I want to be able to add unique constraint on column to ensure uniquness of data

[akshaysasidrn]

Is your proposal related to a problem?

There is no means for a user to ensure data uniqueness within a column

Describe the solution you'd like

PRD: link
Design: link

This constraint can be added to a particular column. This constraint makes sure that all values are unique in this column.
It has to be updated in:

• Create table
• Edit table
• Create column
• Edit column

Note:

1. A unique column can accept NULL values unless an explicitly NULL constraint is added
2. For PKs, this constraint cannot be removed, turning off toggle is disabled