SQL Multi table select query - mysql

Question

http://i.stack.imgur.com/mbUTI.jpg
I want to Do a multi select in one query where one table has data from many tables.
i have four tables to combine it into a single output.
here is a image of my table.
i want to select all and don't want other data from other table just main table with name of all other tables
have tried following but its not working.
select * from project_content
left Join project_master on project_master.id = project_content.p_id
left Join project_content_menu on project_content_menu.type_id = project_content.p_c_id
left Join project_menu_master on project_menu_master.id = project_content.m_id
select * from project_content
left Join project_master on project_master.id = project_content.p_id
left Join project_content_menu on project_content_menu.type_id = project_content.p_c_id
left Join project_menu_master on project_menu_master.id = project_content.m_id
select distinct(*) from project_content
left OUTER Join project_master on project_master.id = project_content.p_id
left OUTER Join project_content_menu on project_content_menu.type_id = project_content.p_c_id
left OUTER Join project_menu_master on project_menu_master.id = project_content.m_id
select * from project_content ,project_master,project_content_menu,project_menu_master
where project_master.id = project_content.p_id and project_content_menu.type_id = project_content.p_c_id and project_menu_master.id = project_content.m_id
select pc.id as id , pm.name as pname , pmm.name as menuname , pcm.name as contentname , pc.name as name
from
project_content as pc,
project_master as pm,
project_content_menu as pcm,
project_menu_master as pmm
where
pm.id = pc.p_id
and
pcm.type_id = pc.m_id
and
pmm.id = pc.p_c_id

Answer 1

If I undesrtood you correctly, you want the data just from the main table, but with names instead of foreign keys from other tables? If so, then:
SELECT pc.id, pm.name, pcm.name, pmm.name, pc.name, pc.desc, pc.thumb, pc.src, pc.status
FROM project_content AS pc
LEFT JOIN project_master AS pm ON pm.id = pc.p_id
LEFT JOIN project_content_menu AS pcm ON pcm.type_id = pc.p_c_id
LEFT JOIN project_menu_master AS pmm ON pmm.id = pc.m_id

Answer 2

Im not an expert in SQL but you could try using UNION operator. like this:
select names
from table1
where lastname like k%
UNION
select names
from table2
where lastname like k%
This will combine the result from table1 and table2 and display UNIQUE NAMES in the result where the lastname is starting with k. so, if there is a JOHN KRAMER and JOHN KUTCHER then only JOHN will be displayed once.
If you want duplicate entries , too, then use UNION ALL

Answer 3

I'm not sure, that I understood your problem well, but if you need to add all records together, you should use: UNION ALL
Like:
select name from project_content
UNION ALL
select name from project_master
UNION ALL
select name from project_master
UNION ALL
select name from project_menu_master
Just be sure, that you have the same amount of columns in each select with the same type