From ea5ca22294a732378a0850e7ce350080d1169b52 Mon Sep 17 00:00:00 2001
From: clark1013 <clark1013@hotmail.com>
Date: Thu, 28 Jan 2021 16:47:06 +0800
Subject: [PATCH] [parser] parser: support builtin function SOUNDEX (#1161)

* add soundex

* add unit test
---
 parser/ast/functions.go      | 1 +
 parser/ast/functions_test.go | 2 ++
 2 files changed, 3 insertions(+)

diff --git a/parser/ast/functions.go b/parser/ast/functions.go
index d543f060a72f3..94f1b24950302 100644
--- a/parser/ast/functions.go
+++ b/parser/ast/functions.go
@@ -229,6 +229,7 @@ const (
 	CharacterLength = "character_length"
 	FindInSet       = "find_in_set"
 	WeightString    = "weight_string"
+	Soundex         = "soundex"
 
 	// information functions
 	Benchmark      = "benchmark"
diff --git a/parser/ast/functions_test.go b/parser/ast/functions_test.go
index 69d664aab8e56..8a8b7a59fa790 100644
--- a/parser/ast/functions_test.go
+++ b/parser/ast/functions_test.go
@@ -97,6 +97,8 @@ func (ts *testFunctionsSuite) TestFuncCallExprRestore(c *C) {
 		{"weight_string(a as character(5))", "WEIGHT_STRING(`a` AS CHAR(5))"},
 		{"weight_string(a as binary(5))", "WEIGHT_STRING(`a` AS BINARY(5))"},
 		{"hex(weight_string('abc' as binary(5)))", "HEX(WEIGHT_STRING(_UTF8MB4'abc' AS BINARY(5)))"},
+		{"soundex(attr)", "SOUNDEX(`attr`)"},
+		{"soundex('string')", "SOUNDEX(_UTF8MB4'string')"},
 	}
 	extractNodeFunc := func(node Node) Node {
 		return node.(*SelectStmt).Fields.Fields[0].Expr