Show data type next to column name in column list

[przemowcf]

Would you consider adding the column's data type next to its name in the column list?
It would be very helpful when working with databases.
The data type could be displayed, for example, after a colon or in parentheses.
If it's also possible to include the size/length (where applicable), that would be fantastic.

Below are a few examples of how I imagine it (highlighted in green just to show what's added):

So it could looks like:

<col_name> : <data_type>
/or/
<col_name> : <data_type>(<size>)
/or/
<col_name> (<data_type>)
/or/
<col_name> (<data_type>:<size>)
/or/
<col_name> (<data_type>[<size>])

[pawelsalawa]

Good idea.

[pawelsalawa]

Created #5345 for this.