anchor.diff:  selectExpr:
   	bitExpr AS? alias?
   	;
  -
  -exprs:
  - 	expr (COMMA expr)*
  - 	;
positive.code: 	|CHARSET EQ_OR_ASSIGN? charsetName
  	;
  	
  collateClause:
  	COLLATE ID
  	;
  	
  charsetName:
  	ID
  	|BINARY
  	;
  
  characterAndCollateWithEqual:
  
negative.code:   	| IGNORE (INDEX|KEY) (FOR (JOIN|ORDER BY|GROUP BY))* idList
   	;
  	
  
  characterAndCollate:
  	characterSet
  