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dainova
Starting Member
31 Posts |
 Posted - 2009-07-23 : 11:20:50
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| Hi,Start working with the following sql scrip on sql-server:SELECT ...(list of columns)FRORM tableT sJOIN m_log o ON o.ID_Option=s.ID_Option --#1inner join mt_rate e on o.ID_Equity = e.ID_Equity --#2inner join mt_ratemachine em on em.ID_machine = e.ID_Equity --#3JOIN to_tableT s_mat ON ( --#4 s_mat.ID_option = s.ID_option AND s_mat.Price = s.Price)Can you tell me what kind of JOIN is --#1 (as noted). Is it by OUTER by default? from reference list I have don't see just <JOIN>, all go with extra word: INNER,LEFT,RIGHT,OUTER,etc...Also logically should I read those joins with logical AND:e.g.JOIN #1... AND inner join #2 ANDinner join #3 AND ....Thanks for your help.Dai |
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elancaster
A very urgent SQL Yakette
1208 Posts |
Posted - 2009-07-23 : 11:33:34
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| JOIN is an inner join, the word INNER is optional / not requiredLEFT JOIN would equate to a left outer joinRIGHT JOIN would equate to a right outer joinand yes, by adding joins to several tables you're saying join to this, and join to this, and join to this etc etc...Em |
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Default JOIN, multi join