let's name the column 'select' because this is a keyword on all platforms

tests/data/db_structure.xml

@@ -229,7 +229,7 @@
 	<declaration>
 
 	<field>
-		<name>key</name>
+		<name>select</name>
 		<type>text</type>
 		<default></default>
 		<notnull>true</notnull>

tests/data/db_structure2.xml

@@ -125,7 +125,7 @@
 		<declaration>
 
 			<field>
-				<name>key</name>
+				<name>select</name>
 				<type>text</type>
 				<default></default>
 				<notnull>false</notnull>