troubleshooting Question

SQL Select multiple tables

Avatar of Richard Korts
Richard KortsFlag for United States of America asked on
MySQL Server
6 Comments1 Solution406 ViewsLast Modified:
See attached; I have two tables with all the same columns EXCEPT one.

I'm trying to do this:

SELECT * from task, cl_task c where c.cid = 0 order by tgroup, category, subcategory, subsubcategory

I get:

#1052 - Column 'tgroup' in order clause is ambiguous

Of course tgroup is in both tables, as is category, subcategory, etc.

Do I have to use union or join or ??
cl-task-table.jpg
task-table.jpg
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