Join two mysql tables with LIKE condition. - mysql

Question

I'm trying to run this code but i'm getting errors.
Any ideas why?
SELECT notes.project_id, notes.title, notes.description
FROM notes, project_members
WHERE notes.title LIKE '%second%' OR notes.description LIKE '%second%'
WHERE notes.project_id = project_members.project_id AND project_members.user_id = '7'

Answer 1

Since you only can have one WHERE clause you could use a inner join like this:
SELECT notes.project_id, notes.title, notes.description
FROM project_members pm
INNER JOIN notes ON notes.project_id = pm.project_id AND pm.user_id = 7
WHERE notes.title LIKE '%second%' OR notes.description LIKE '%second%'

Answer 2

You have two WHERE clauses, but single SELECT only allows one. But, this would easily be fixed if you used proper, explicit JOIN syntax:
SELECT n.project_id, n.title, n.description
FROM notes n JOIN
project_members p
ON n.project_id = p.project_id
WHERE (n.title LIKE '%second%' OR n.description LIKE '%second%') AND
p.user_id = '7';
Note:
Always use proper, explicit JOIN syntax. Never use commas in the FROM clause.
Table aliases make the query easier to write and to read.
I'm pretty sure your WHERE conditions are missing parentheses, for your intended logic.
If user_id is a number of any sort, then don't use single quotes around "7". This can confuse both the compiler and people.

Answer 3

There should be single WHERE clause.
SELECT notes.project_id, notes.title, notes.description
FROM notes, project_members
WHERE
(notes.title LIKE '%second%' OR notes.description LIKE '%second%')
AND notes.project_id = project_members.project_id AND project_members.user_id = '7';
Query would look something above to AND between your LIKE conditions.
You may also consider using JOIN, Like this.
SELECT notes.project_id, notes.title, notes.description
FROM notes
JOIN project_members
ON notes.project_id=project_members.project_id
WHERE
(notes.title LIKE '%second%' OR notes.description LIKE '%second%')
AND project_members.user_id = '7';