From 60bb0577839444a0944d39e4a4456155a4f5124a Mon Sep 17 00:00:00 2001
From: CadenGuo <411189077@qq.com>
Date: Mon, 31 Aug 2020 03:40:18 +0000
Subject: [PATCH] add a new mysql operator for force case sensitie query

---
 orm/db.go       | 11 ++++++-----
 orm/db_mysql.go |  9 +++++----
 orm/orm_test.go |  8 ++++++++
 3 files changed, 19 insertions(+), 9 deletions(-)

diff --git a/orm/db.go b/orm/db.go
index 9a1827e8..7536a422 100644
--- a/orm/db.go
+++ b/orm/db.go
@@ -36,10 +36,11 @@ var (
 
 var (
 	operators = map[string]bool{
-		"exact":     true,
-		"iexact":    true,
-		"contains":  true,
-		"icontains": true,
+		"exact":       true,
+		"iexact":      true,
+		"strictexact": true,
+		"contains":    true,
+		"icontains":   true,
 		// "regex":       true,
 		// "iregex":      true,
 		"gt":          true,
@@ -1202,7 +1203,7 @@ func (d *dbBase) GenerateOperatorSQL(mi *modelInfo, fi *fieldInfo, operator stri
 		}
 		sql = d.ins.OperatorSQL(operator)
 		switch operator {
-		case "exact":
+		case "exact", "strictexact":
 			if arg == nil {
 				params[0] = "IS NULL"
 			}
diff --git a/orm/db_mysql.go b/orm/db_mysql.go
index ff6516b7..8dd1e755 100644
--- a/orm/db_mysql.go
+++ b/orm/db_mysql.go
@@ -22,10 +22,11 @@ import (
 
 // mysql operators.
 var mysqlOperators = map[string]string{
-	"exact":     "= BINARY ?",
-	"iexact":    "LIKE ?",
-	"contains":  "LIKE BINARY ?",
-	"icontains": "LIKE ?",
+	"exact":       "= ?",
+	"iexact":      "LIKE ?",
+	"strictexact": "= BINARY ?",
+	"contains":    "LIKE BINARY ?",
+	"icontains":   "LIKE ?",
 	// "regex":       "REGEXP BINARY ?",
 	// "iregex":      "REGEXP ?",
 	"gt":          "> ?",
diff --git a/orm/orm_test.go b/orm/orm_test.go
index f96fb941..18e48288 100644
--- a/orm/orm_test.go
+++ b/orm/orm_test.go
@@ -822,6 +822,14 @@ func TestOperators(t *testing.T) {
 	throwFail(t, err)
 	throwFail(t, AssertIs(num, 1))
 
+	num, err = qs.Filter("user_name__strictexact", "Slene").Count()
+	throwFail(t, err)
+	throwFail(t, AssertIs(num, 0))
+
+	num, err = qs.Filter("user_name__strictexact", "slene").Count()
+	throwFail(t, err)
+	throwFail(t, AssertIs(num, 1))
+
 	num, err = qs.Filter("user_name__contains", "e").Count()
 	throwFail(t, err)
 	throwFail(t, AssertIs(num, 2))