Don't overwrite existing clause builders

jinzhu · jinzhu · commit d74415674599 · 2025-06-04T15:33:30.000+08:00
diff --git a/mysql.go b/mysql.go
@@ -185,7 +185,9 @@ func (dialector Dialector) Initialize(db *gorm.DB) (err error) {
 	callbacks.RegisterDefaultCallbacks(db, callbackConfig)
 
 	for k, v := range dialector.ClauseBuilders() {
-		db.ClauseBuilders[k] = v
+		if _, ok := db.ClauseBuilders[k]; !ok {
+			db.ClauseBuilders[k] = v
+		}
 	}
 	return
 }

Original file line number	Diff line number	Diff line change
`@@ -185,7 +185,9 @@ func (dialector Dialector) Initialize(db *gorm.DB) (err error) {`
`185`	`185`	`callbacks.RegisterDefaultCallbacks(db, callbackConfig)`
`186`	`186`
`187`	`187`	`for k, v := range dialector.ClauseBuilders() {`
`188`		`- db.ClauseBuilders[k] = v`
	`188`	`+ if _, ok := db.ClauseBuilders[k]; !ok {`
	`189`	`+ db.ClauseBuilders[k] = v`
	`190`	`+ }`
`189`	`191`	`}`
`190`	`192`	`return`
`191`	`193`	`}`