Question : le mySQL joignent la question comment j'écris

Ajourner 1

webpage_link_id (international), le webpage_id (international), webpage_RSlink1 (international), le

50,67,1,2


Table2

webpage_id (international), webpage_name, le webpage_url
1. 1, level1, level1.asp
2. 2, level2, level2.asp

How j'écrivent la question de SQL pour obtenir ce qui suit :


webpage_link_id, webpage_id, webpage_RSLink1, webpage_name, webpage_url, webpage_RSLink2, webpage_name, webpage_url

50,57,1, level1, level1.asp, 2, level2, level2.asp

Thank you.
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Réponse : le mySQL joignent la question comment j'écris

essai…
CHOISIR a.webpage_link_id, a.webpage_id, a.webpage_RSLink1, b.webpage_name, b.webpage_url, a.webpage_RSLink2, c.webpage_name, c.webpage_url
De table1 a
JOINDRE Table2 b SUR a.webpage_RSLink1 = b.webpage_id
JOINDRE Table2 c SUR a.webpage_RSLink2 = c.webpage_id