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多重连接

嘿，我正在尝试连接多个表，并将 SQL 脚本从 JMP 查询生成器复制到脚本中，并在开头添加一些命令。 可能它不起作用，因为它是 SQL 而不是 JSL 语言？

 

我的问题是，在 JMP 查询生成器中，我无法决定应选择哪些列来匹配行。 有人可以帮我吗？

 

这是我现在拥有的脚本。 （JSL和SQL的结合）

dt=CurrentDataTable ();
dt<< SELECT * 
FROM "mon_trend Abs._OF 420nm 5cm"  t1 
 LEFT OUTER JOIN "mon_trend TOC mg l" t20 
  ON  (  ( t20.Site = t1.Site )  AND  ( t20.Season = t1.Season ) )
 LEFT OUTER JOIN "mon_trend Syrgashalt mg l" t19 
  ON  (  ( t19.Site = t1.Site )  AND  ( t19.Season = t1.Season ) )  
 LEFT OUTER JOIN "mon_trend Si mg l" t18 
  ON  (  ( t18.Site = t1.Site )  AND  ( t18.Season = t1.Season ) )  
 LEFT OUTER JOIN "mon_trend PO4-P µg l" t17 
  ON  (  ( t17.Site = t1.Site )  AND  ( t17.Season = t1.Season ) )  
 LEFT OUTER JOIN "mon_trend pH" t16 
  ON  (  ( t16.Site = t1.Site )  AND  ( t16.Season = t1.Season ) )  
 LEFT OUTER JOIN "mon_trend NO2-N µg l" t15 
  ON  (  ( t15.Site = t1.Site )  AND  ( t15.Season = t1.Season ) )  
 LEFT OUTER JOIN "mon_trend NO2+NO3-N µg l" t14 
  ON  (  ( t14.Site = t1.Site )  AND  ( t14.Season = t1.Season ) )  
 LEFT OUTER JOIN "mon_trend NH4-N µg l" t13 
  ON  (  ( t13.Site = t1.Site )  AND  ( t13.Season = t1.Season ) )  
 LEFT OUTER JOIN "mon_trend Na mekv l" t12 
  ON  (  ( t12.Site = t1.Site )  AND  ( t12.Season = t1.Season ) )  
 LEFT OUTER JOIN "mon_trend Mn µg l" t11 
  ON  (  ( t11.Site = t1.Site )  AND  ( t11.Season = t1.Season ) )  
 LEFT OUTER JOIN "mon_trend Mg mekv l" t10 
  ON  (  ( t10.Site = t1.Site )  AND  ( t10.Season = t1.Season ) )  
 LEFT OUTER JOIN "mon_trend Kond_25 mS m25" t9 
  ON  (  ( t9.Site = t1.Site )  AND  ( t9.Season = t1.Season ) )  
 LEFT OUTER JOIN "mon_trend K mekv l" t8 
  ON  (  ( t8.Site = t1.Site )  AND  ( t8.Season = t1.Season ) )  
 LEFT OUTER JOIN "mon_trend Fe µg l" t7 
  ON  (  ( t7.Site = t1.Site )  AND  ( t7.Season = t1.Season ) )  
 LEFT OUTER JOIN "mon_trend F mg l" t6 
  ON  (  ( t6.Site = t1.Site )  AND  ( t6.Season = t1.Season ) )  
 LEFT OUTER JOIN "mon_trend Cl mekv l" t5 
  ON  (  ( t5.Site = t1.Site )  AND  ( t5.Season = t1.Season ) )  
 LEFT OUTER JOIN "mon_trend Ca mekv l" t4 
  ON  (  ( t4.Site = t1.Site )  AND  ( t4.Season = t1.Season ) )  
 LEFT OUTER JOIN "mon_trend Alk. Acid mekv l" t3 
  ON  (  ( t3.Site = t1.Site )  AND  ( t3.Season = t1.Season ) )  
 LEFT OUTER JOIN "mon_trend Abs._F 420nm 5cm" t2 
  ON  (  ( t1.Site = t2.Site )  AND  ( t1.Season = t2.Season ) )  ;

回复：多重连接

查找JMP函数询问（）

 

查询（<，...，>，<私有|不可见>、<标量>、sqlStatement ）

描述

对选定的数据表执行 SQL 查询。

 

当然，您可以在脚本中使用 JMP 查询生成器。 当您运行 JMP 查询生成器脚本并运行时，生成的表应附加一个运行查询脚本。 这是运行相同查询的 JSL 脚本。

 

希望有帮助。