diff --git a/src/sqlParser.jison b/src/sqlParser.jison
@@ -10,10 +10,12 @@
[-][-]\s.*\n                                                      /* skip sql comments */
[#]\s.*\n                                                         /* skip sql comments */
\s+                                                               /* skip whitespace */
-                                                                  
[`][a-zA-Z_\u4e00-\u9fa5][a-zA-Z0-9_\u4e00-\u9fa5]*[`]            return 'IDENTIFIER'
[\w]+[\u4e00-\u9fa5]+[0-9a-zA-Z_\u4e00-\u9fa5]*                   return 'IDENTIFIER'
[\u4e00-\u9fa5][0-9a-zA-Z_\u4e00-\u9fa5]*                         return 'IDENTIFIER'
SELECT                                                            return 'SELECT'
ALL                                                               return 'ALL'
ANY                                                               return 'ANY'
@@ -116,7 +118,7 @@ LIMIT                                                             return 'LIMIT'
"{"                                                               return '{'
"}"                                                               return '}'
";"                                                               return ';'
-                                                                 
['](\\.|[^'])*[']                                                 return 'STRING'
["](\\.|[^"])*["]                                                 return 'STRING'
[0][x][0-9a-fA-F]+                                                return 'HEX_NUMERIC'
@@ -126,7 +128,7 @@ LIMIT                                                             return 'LIMIT'
[a-zA-Z_\u4e00-\u9fa5][a-zA-Z0-9_\u4e00-\u9fa5]*                  return 'IDENTIFIER'
\.                                                                return 'DOT'
['"][a-zA-Z_\u4e00-\u9fa5][a-zA-Z0-9_\u4e00-\u9fa5]*["']          return 'QUOTED_IDENTIFIER'
-                                                                 
<<EOF>>                                                           return 'EOF'
.                                                                 return 'INVALID'

@@ -164,7 +166,7 @@ main
  ;

selectClause
-  : SELECT 
      distinctOpt
      highPriorityOpt
      maxStateMentTimeOpt
@@ -203,7 +205,7 @@ selectClause
  ;

distinctOpt
-  : ALL { $$ = $1 } 
  | DISTINCT { $$ = $1 }
  | DISTINCTROW { $$ = $1 }
  | { $$ = null }
@@ -295,6 +297,7 @@ function_call_param
identifier
  : IDENTIFIER { $$ = { type: 'Identifier', value: $1 } }
  | identifier DOT IDENTIFIER { $$ = $1; $1.value += '.' + $3 }
  ;
identifier_list
  : identifier { $$ = { type: 'IdentifierList', value: [ $1 ] } }
@@ -336,7 +339,7 @@ simple_expr
  ;
bit_expr
  : simple_expr { $$ = $1 }
-  | bit_expr '|' bit_expr { $$ = { type: 'BitExpression', operator: '|', left: $1, right: $3 } } 
  | bit_expr '&' bit_expr { $$ = { type: 'BitExpression', operator: '&', left: $1, right: $3 } }
  | bit_expr '<<' bit_expr { $$ = { type: 'BitExpression', operator: '<<', left: $1, right: $3 } }
  | bit_expr '>>' bit_expr { $$ = { type: 'BitExpression', operator: '>>', left: $1, right: $3 } }
@@ -446,6 +449,7 @@ limit
  : LIMIT NUMERIC { $$ = { type: 'Limit', value: [ $2 ] } }
  | LIMIT NUMERIC ',' NUMERIC { $$ = { type: 'Limit', value: [ $2, $4 ] } }
  | LIMIT NUMERIC OFFSET NUMERIC { $$ = { type: 'Limit', value: [ $4, $2 ], offsetMode: true } }
  ;
limit_opt
  : { $$ = null }