diff --git a/dialect/sql/builder.go b/dialect/sql/builder.go
index 61a71d508..e7fadba36 100644
--- a/dialect/sql/builder.go
+++ b/dialect/sql/builder.go
@@ -1351,9 +1351,18 @@ func (p *Predicate) EqualFold(col, sub string) *Predicate {
 	return p.Append(func(b *Builder) {
 		f := &Func{}
 		f.SetDialect(b.dialect)
-		f.Lower(col)
-		b.WriteString(f.String())
-		b.WriteOp(OpEQ)
+		switch b.dialect {
+		case dialect.MySQL:
+			// We assume the CHARACTER SET is configured to utf8mb4,
+			// because this how it is defined in dialect/sql/schema.
+			b.Ident(col).WriteString(" COLLATE utf8mb4_general_ci = ")
+		case dialect.Postgres:
+			b.Ident(col).WriteString(" ILIKE ")
+		default: // SQLite.
+			f.Lower(col)
+			b.WriteString(f.String())
+			b.WriteOp(OpEQ)
+		}
 		b.Arg(strings.ToLower(sub))
 	})
 }
diff --git a/dialect/sql/builder_test.go b/dialect/sql/builder_test.go
index 99f66ad6f..e81b48894 100644
--- a/dialect/sql/builder_test.go
+++ b/dialect/sql/builder_test.go
@@ -936,7 +936,15 @@ func TestBuilder(t *testing.T) {
 				Select().
 				From(Table("users")).
 				Where(Or(EqualFold("name", "BAR"), EqualFold("name", "BAZ"))),
-			wantQuery: `SELECT * FROM "users" WHERE LOWER("name") = $1 OR LOWER("name") = $2`,
+			wantQuery: `SELECT * FROM "users" WHERE "name" ILIKE $1 OR "name" ILIKE $2`,
+			wantArgs:  []interface{}{"bar", "baz"},
+		},
+		{
+			input: Dialect(dialect.MySQL).
+				Select().
+				From(Table("users")).
+				Where(Or(EqualFold("name", "BAR"), EqualFold("name", "BAZ"))),
+			wantQuery: "SELECT * FROM `users` WHERE `name` COLLATE utf8mb4_general_ci = ? OR `name` COLLATE utf8mb4_general_ci = ?",
 			wantArgs:  []interface{}{"bar", "baz"},
 		},
 		{