title: unknown column in field list, column is really there
body: <p>I am getting an unknown column in field list error in a MySQL database select query, even though the column is actually there.  I even checked the spelling by right clicking on the MySQL command line client and using the Find... tool to search for the correct spelling, which turned up matches both in the column list resulting from describe table and in the column name in the select query.  How can I fix this?  </p>
  
  <p>Here is a screen capture of the MySQL command line client showing the error repeating even though I tested both the correct spelling UMLSCUI and an incorrect spelling UMLSCU1:  </p>
  
  <p><img src="https://s1.postimg.org/iwytkznv3/mysql_unknowncolumn.jpg">  </p>
  
  <p>Here is a screen shot of the definition of the table:  </p>
  
  <p><img src="https://s16.postimg.org/kzyrpoo79/describe_rxnsat_mysql.jpg"></p>