This class implements the builder for expressions within the WHERE part.
You can overwrite all functions to achieve another handling.
build( $parsed)
buildColRef( $parsed)
buildConstant( $parsed)
buildOperator( $parsed)
buildFunction( $parsed)
buildInList( $parsed)
buildWhereExpression( $parsed)
buildWhereBracketExpression( $parsed)
buildUserVariable( $parsed)