我的SQL查询通过mm连接多个表

Question

im looking for a SQL statement for the structue below. I want select all uid's and texts of the tables, which got a relation to the table declined :

• partsofspeech
• verbs_tempus
• words_case
• words_language
• words_relation

Each table has the fields uid and text . Each table got a mm table to save any relation. The local value belongs to the uid of related table itself. Foreign represents the uid of decline .

I want do this with 1 SQL query. I think it should be possible with joins but im new with these. Here is a 'lil graphic:

Here is my query:

SELECT partsofspeech.uid, partsofspeech.text from declined
LEFT JOIN partsofspeech_mm
ON partsofspeech_mm.foreign = declined.uid
LEFT JOIN partsofspeech
ON partsofspeech_mm.local = partsofspeech.uid

fiddle:

sql fiddle

Does any1 has a clue to handle this recursive probably?

Answer 1

Here's the first table partsofspeech done for you

SELECT T1.uid,T1.text,T2.local,T2.foreign,T3.uid,T3.text
  FROM partsofspeech T1
  INNER JOIN partsofspeech_nm T2 ON (T1.uid = T2.local)
  INNER JOIN declined T3 ON (T2.foreign = T3.uid)

you can do the rest for the other tables and UNION them together.