Answer by Sh_coder for How to do an update + join in PostgreSQL?

To UPDATE one Table using another, in PostGRE SQL / AWS (SQL workbench).

In PostGRE SQL, this is how you need to use joins in UPDATE Query:

UPDATE TABLEA set COLUMN_FROM_TABLEA = COLUMN_FROM_TABLEB FROM TABLEA,TABLEB WHERE FILTER_FROM_TABLEA = FILTER_FROM_TABLEB;Example:

Update Employees Set Date_Of_Exit = Exit_Date_Recorded , Exit_Flg = 1 From Employees, Employee_Exit_Clearance Where Emp_ID = Exit_Emp_ID

Table A - Employees Columns in Table A - Date_Of_Exit,Emp_ID,Exit_Flg Table B is - Employee_Exit_Clearance Columns in Table B - Exit_Date_Recorded,Exit_Emp_ID

1760 rows affected

Execution time: 29.18s