SQL syntax parsing exception when the field name in the SQL statement is error

[bloodsucker1]

Bug Report

SQL syntax parsing exception when the field name in the SQL statement is error,

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

func TestExample(t *testing.T) {
	p := parser.New()
	stmtNodes, _, err := p.Parse("select message_id,error,update_time from test", "", "")
	fmt.Println(stmtNodes[0], err)
}

2. What did you expect to see?
   Get sql syntax tree

3. What did you see instead?
   Syntax parsing exception

panic: runtime error: index out of range [0] with length 0 [recovered]
	panic: runtime error: index out of range [0] with length 0
goroutine 36 [running]:

4. What version of TiDB SQL Parser are you using?
   v0.0.0-20200218113622-517beb2e39c2

[kennytm]

Thanks for the bug report. ERROR is not a reserved word in MySQL 8.0 (there is no (R) in https://dev.mysql.com/doc/refman/8.0/en/keywords.html), but was classified as one in the parser.

The other keywords with the same problem:

• chain
• error
• general
• nvarchar
• pack_keys
• parser