〖orz〗 to find an SQL statement

Source: Internet
Author: User
〖orz〗 1 SQL statements
Want to prioritize Rand () out of ' phome_ecms_news ' table ClassID limit 1 (and in accordance with) Islast (Ultimate column) = 1

And then the RAND () limit 1 in the table ' Phome_enewsclass '


The following SQL statement is wrong: Not to write the case, only to express the idea.
SQL Code
  
  SELECT * from ' phome_ecms_news ' where classid = (SELECT classid from ' Phome_enewsclass ' where islast=1 RAND () limit 1) RAN D () limit 1;


------Solution--------------------
SQL Code
SELECT * from ' Phome_ecms_news ' where ClassID in    (  SELECT classid from ' Phome_enewsclass ' where islast=1 ORDER by RAND () limit 1  )  ORDER by RAND () limit 1;
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