diskhub Posted December 13, 2005 Share Posted December 13, 2005 Above there are 5 tables. I have tried many joins but it didn't work. SELECT a.***, a.**, b1.b1_name FROM tablea a, tableb b, tableb1 b1, table c WHERE (a.b_id = b.b_id AND b.b1_id = b1.b1_id AND a.c_id= c.c_id) ORDER BY a.a_id ASC a.*** and a.** are two other colums of TABLE A. However, it doesn't seem to work. Cos no row is produced. (0 row) But i have double check and all tables have entry well... please help Link to comment https://forums.phpfreaks.com/topic/3036-confusing-mysql-joins/ Share on other sites More sharing options...
diskhub Posted December 14, 2005 Author Share Posted December 14, 2005 no one can help in this? [!--quoteo(post=326990:date=Dec 13 2005, 06:48 PM:name=diskhub)--][div class=\'quotetop\']QUOTE(diskhub @ Dec 13 2005, 06:48 PM) 326990[/snapback][/div][div class=\'quotemain\'][!--quotec--] Above there are 5 tables. I have tried many joins but it didn't work. SELECT a.***, a.**, b1.b1_name FROM tablea a, tableb b, tableb1 b1, table c WHERE (a.b_id = b.b_id AND b.b1_id = b1.b1_id AND a.c_id= c.c_id) ORDER BY a.a_id ASC a.*** and a.** are two other colums of TABLE A. However, it doesn't seem to work. Cos no row is produced. (0 row) But i have double check and all tables have entry well... please help Link to comment https://forums.phpfreaks.com/topic/3036-confusing-mysql-joins/#findComment-10183 Share on other sites More sharing options...
ryanlwh Posted December 14, 2005 Share Posted December 14, 2005 I'm suprised that it didn't generate an error. The "table c" part should be "tablec c" if I'm correct. Change that and see what happens. Also try this: [!--sql--][div class=\'sqltop\']SQL[/div][div class=\'sqlmain\'][!--sql1--][span style=\'color:blue;font-weight:bold\']SELECT[/span] a.***, a.**, b1.b1_name FROM tablea a LEFT JOIN tableb b ON a.b_id = b.b_id LEFT JOIN tableb1 b1 ON b.b1_id = b1.b1_id LEFT JOIN tablec c ON a.c_id= c.c_id ORDER BY a.a_id ASC [!--sql2--][/div][!--sql3--] Link to comment https://forums.phpfreaks.com/topic/3036-confusing-mysql-joins/#findComment-10185 Share on other sites More sharing options...
diskhub Posted December 14, 2005 Author Share Posted December 14, 2005 [!--quoteo(post=327294:date=Dec 14 2005, 01:24 PM:name=ryanlwh)--][div class=\'quotetop\']QUOTE(ryanlwh @ Dec 14 2005, 01:24 PM) 327294[/snapback][/div][div class=\'quotemain\'][!--quotec--] I'm suprised that it didn't generate an error. The "table c" part should be "tablec c" if I'm correct. Change that and see what happens. Also try this: [!--sql--][div class=\'sqltop\']SQL[/div][div class=\'sqlmain\'][!--sql1--][span style=\'color:blue;font-weight:bold\']SELECT[/span] a.***, a.**, b1.b1_name FROM tablea a LEFT JOIN tableb b ON a.b_id = b.b_id LEFT JOIN tableb1 b1 ON b.b1_id = b1.b1_id LEFT JOIN tablec c ON a.c_id= c.c_id ORDER BY a.a_id ASC [!--sql2--][/div][!--sql3--] yes that's my typo. It is tablec c. Nope, it produces no row. Try it if u think it works... it fails badly on me. please help. Link to comment https://forums.phpfreaks.com/topic/3036-confusing-mysql-joins/#findComment-10194 Share on other sites More sharing options...
shoz Posted December 15, 2005 Share Posted December 15, 2005 I'll take a look at it if you post a small dump of the tables. ]$ mysqldump dbname table1 table2 table3 --opt > file.sql create identical tables renamed with made up data. Remember to post only a small dump. Link to comment https://forums.phpfreaks.com/topic/3036-confusing-mysql-joins/#findComment-10219 Share on other sites More sharing options...
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