two idential constant value #1194

Bug Report

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1. What did you do?
   If possible, provide a recipe for reproducing the error.
   

   parser/mysql/type.go

   Line 67 in 1259bef

   NumFlag uint = 1 << 15 /* Field is a num (for clients) */

   
   

   parser/mysql/type.go

   Line 69 in 1259bef

   GroupFlag uint = 1 << 15 /* Internal: Group field */

here 2 lines get the same value 1<<15

2. What did you expect to see?

3. What did you see instead?

4. What version of TiDB SQL Parser are you using?