[9.0] don't try to compare varchars in vtgate

go/test/endtoend/vtgate/lookup_test.go

@@ -515,3 +515,15 @@ func TestSelectNullLookup(t *testing.T) {
 		})
 	}
 }
+
+func TestUnicodeLooseMD5CaseInsensitive(t *testing.T) {
+	ctx := context.Background()
+	conn, err := mysql.Connect(ctx, &vtParams)
+	require.NoError(t, err)
+	defer conn.Close()
+
+	exec(t, conn, "insert into t4(id1, id2) values(1, 'test')")
+	defer exec(t, conn, "delete from t4")
+
+	assertMatches(t, conn, "SELECT id1, id2 from t4 where id2 = 'Test'", `[[INT64(1) VARCHAR("test")]]`)
+}

go/test/endtoend/vtgate/main_test.go

@@ -87,14 +87,14 @@ create table t4(
 	id1 bigint,
 	id2 varchar(10),
 	primary key(id1)
-) Engine=InnoDB;
+) ENGINE=InnoDB DEFAULT charset=utf8mb4 COLLATE=utf8mb4_general_ci;
 
 create table t4_id2_idx(
 	id2 varchar(10),
 	id1 bigint,
 	keyspace_id varbinary(50),
     primary key(id2, id1)
-) Engine=InnoDB;
+) Engine=InnoDB DEFAULT charset=utf8mb4 COLLATE=utf8mb4_general_ci;
 
 create table t5_null_vindex(
 	id bigint not null,

go/test/utils/diff.go

@@ -43,17 +43,17 @@ import (
 // In Test*() function:
 //
 // mustMatch(t, want, got, "something doesn't match")
-func MustMatchFn(allowUnexportedTypes []interface{}, ignoredFields []string, extraOpts ...cmp.Option) func(t *testing.T, want, got interface{}, errMsg string) {
+func MustMatchFn(allowUnexportedTypes []interface{}, ignoredFields []string, extraOpts ...cmp.Option) func(t *testing.T, want, got interface{}, errMsg ...string) {
 	diffOpts := append([]cmp.Option{
 		cmp.AllowUnexported(allowUnexportedTypes...),
 		cmpIgnoreFields(ignoredFields...),
 	}, extraOpts...)
 	// Diffs want/got and fails with errMsg on any failure.
-	return func(t *testing.T, want, got interface{}, errMsg string) {
+	return func(t *testing.T, want, got interface{}, errMsg ...string) {
 		t.Helper()
 		diff := cmp.Diff(want, got, diffOpts...)
 		if diff != "" {
-			t.Fatalf("%s: (-want +got)\n%v", errMsg, diff)
+			t.Fatalf("%v: (-want +got)\n%v", errMsg, diff)
 		}
 	}
 }

go/vt/vtexplain/testdata/multi-output/selectsharded-output.txt

@@ -60,8 +60,8 @@ select count(*) from user where id = 1 /* point aggregate */
 select count(*) from user where name in ('alice','bob') /* scatter aggregate */
 
 1 ks_sharded/40-80: select `name`, user_id from name_user_map where `name` in ('alice') limit 10001 /* scatter aggregate */
-1 ks_sharded/c0-: select `name`, user_id from name_user_map where `name` in ('bob') limit 10001 /* scatter aggregate */
-2 ks_sharded/-40: select count(*) from user where `name` in ('alice', 'bob') limit 10001 /* scatter aggregate */
+2 ks_sharded/c0-: select `name`, user_id from name_user_map where `name` in ('bob') limit 10001 /* scatter aggregate */
+3 ks_sharded/-40: select count(*) from user where `name` in ('alice', 'bob') limit 10001 /* scatter aggregate */
 
 ----------------------------------------------------------------------
 select name, count(*) from user group by name /* scatter aggregate */

go/vt/vtgate/executor_framework_test.go

@@ -24,6 +24,10 @@ import (
 	"strings"
 	"testing"
 
+	"github.com/stretchr/testify/require"
+
+	"github.com/stretchr/testify/assert"
+
 	"context"
 
 	"vitess.io/vitess/go/sqltypes"
@@ -546,19 +550,14 @@ func testQueryLog(t *testing.T, logChan chan interface{}, method, stmtType, sql
 	t.Helper()
 
 	logStats := getQueryLog(logChan)
-	if logStats == nil {
-		t.Errorf("logstats: no querylog in channel, want sql %s", sql)
-		return nil
-	}
+	require.NotNil(t, logStats)
 
 	var log bytes.Buffer
 	streamlog.GetFormatter(QueryLogger)(&log, nil, logStats)
 	fields := strings.Split(log.String(), "\t")
 
 	// fields[0] is the method
-	if method != fields[0] {
-		t.Errorf("logstats: method want %q got %q", method, fields[0])
-	}
+	assert.Equal(t, method, fields[0], "logstats: method")
 
 	// fields[1] - fields[6] are the caller id, start/end times, etc
 
@@ -588,22 +587,16 @@ func testQueryLog(t *testing.T, logChan chan interface{}, method, stmtType, sql
 	}
 
 	// fields[11] is the statement type
-	if stmtType != fields[11] {
-		t.Errorf("logstats: stmtType want %q got %q", stmtType, fields[11])
-	}
+	assert.Equal(t, stmtType, fields[11], "logstats: stmtType")
 
 	// fields[12] is the original sql
 	wantSQL := fmt.Sprintf("%q", sql)
-	if wantSQL != fields[12] {
-		t.Errorf("logstats: SQL want %s got %s", wantSQL, fields[12])
-	}
+	assert.Equal(t, wantSQL, fields[12], "logstats: SQL")
 
 	// fields[13] contains the formatted bind vars
 
 	// fields[14] is the count of shard queries
-	if fmt.Sprintf("%v", shardQueries) != fields[14] {
-		t.Errorf("logstats: ShardQueries want %v got %v", shardQueries, fields[14])
-	}
+	assert.Equal(t, fmt.Sprintf("%v", shardQueries), fields[14], "logstats: ShardQueries")
 
 	return logStats
 }

go/vt/vtgate/executor_select_test.go

@@ -568,10 +568,8 @@ func TestSelectBindvars(t *testing.T) {
 	lookup.SetResults([]*sqltypes.Result{sqltypes.MakeTestResult(
 		sqltypes.MakeTestFields("b|a", "varbinary|varbinary"),
 		"foo1|1",
-		"foo2|1",
 	), sqltypes.MakeTestResult(
 		sqltypes.MakeTestFields("b|a", "varbinary|varbinary"),
-		"foo1|1",
 		"foo2|1",
 	)})
 
@@ -584,12 +582,8 @@ func TestSelectBindvars(t *testing.T) {
 		Sql:           "select id from user where id = :id",
 		BindVariables: map[string]*querypb.BindVariable{"id": sqltypes.Int64BindVariable(1)},
 	}}
-	if !reflect.DeepEqual(sbc1.Queries, wantQueries) {
-		t.Errorf("sbc1.Queries: %+v, want %+v\n", sbc1.Queries, wantQueries)
-	}
-	if sbc2.Queries != nil {
-		t.Errorf("sbc2.Queries: %+v, want nil\n", sbc2.Queries)
-	}
+	utils.MustMatch(t, sbc1.Queries, wantQueries)
+	assert.Empty(t, sbc2.Queries)
 	sbc1.Queries = nil
 	testQueryLog(t, logChan, "TestExecute", "SELECT", sql, 1)
 
@@ -608,11 +602,10 @@ func TestSelectBindvars(t *testing.T) {
 			"__vals": sqltypes.TestBindVariable([]interface{}{"foo1", "foo2"}),
 		},
 	}}
-	if !reflect.DeepEqual(sbc1.Queries, wantQueries) {
-		t.Errorf("sbc1.Queries: %+v, want %+v\n", sbc1.Queries, wantQueries)
-	}
+	utils.MustMatch(t, wantQueries, sbc1.Queries)
 	sbc1.Queries = nil
 	testQueryLog(t, logChan, "VindexLookup", "SELECT", "select name, user_id from name_user_map where name in ::name", 1)
+	testQueryLog(t, logChan, "VindexLookup", "SELECT", "select name, user_id from name_user_map where name in ::name", 1)
 	testQueryLog(t, logChan, "TestExecute", "SELECT", sql, 1)
 
 	// Test with BytesBindVariable
@@ -623,17 +616,14 @@ func TestSelectBindvars(t *testing.T) {
 	})
 	require.NoError(t, err)
 	wantQueries = []*querypb.BoundQuery{{
-		Sql: "select id from user where `name` in ::__vals",
+		Sql: "select id from user where 1 != 1",
 		BindVariables: map[string]*querypb.BindVariable{
-			"name1":  sqltypes.BytesBindVariable([]byte("foo1")),
-			"name2":  sqltypes.BytesBindVariable([]byte("foo2")),
-			"__vals": sqltypes.TestBindVariable([]interface{}{[]byte("foo1"), []byte("foo2")}),
+			"name1": sqltypes.BytesBindVariable([]byte("foo1")),
+			"name2": sqltypes.BytesBindVariable([]byte("foo2")),
 		},
 	}}
-	if !reflect.DeepEqual(sbc1.Queries, wantQueries) {
-		t.Errorf("sbc1.Queries: %+v, want %+v\n", sbc1.Queries, wantQueries)
-	}
-
+	utils.MustMatch(t, wantQueries, sbc1.Queries)
+	testQueryLog(t, logChan, "VindexLookup", "SELECT", "select name, user_id from name_user_map where name in ::name", 1)
 	testQueryLog(t, logChan, "VindexLookup", "SELECT", "select name, user_id from name_user_map where name in ::name", 1)
 	testQueryLog(t, logChan, "TestExecute", "SELECT", sql, 1)
 
@@ -662,9 +652,7 @@ func TestSelectBindvars(t *testing.T) {
 			"name": sqltypes.StringBindVariable("nonexistent"),
 		},
 	}}
-	if !reflect.DeepEqual(sbc1.Queries, wantQueries) {
-		t.Errorf("sbc1.Queries: %+v, want %+v\n", sbc1.Queries, wantQueries)
-	}
+	utils.MustMatch(t, wantQueries, sbc1.Queries)
 
 	vars, err := sqltypes.BuildBindVariable([]interface{}{sqltypes.NewVarBinary("nonexistent")})
 	require.NoError(t, err)
@@ -674,9 +662,8 @@ func TestSelectBindvars(t *testing.T) {
 			"name": vars,
 		},
 	}}
-	if !reflect.DeepEqual(lookup.Queries, wantLookupQueries) {
-		t.Errorf("lookup.Queries: %+v, want %+v\n", lookup.Queries, wantLookupQueries)
-	}
+
+	utils.MustMatch(t, wantLookupQueries, lookup.Queries)
 
 	testQueryLog(t, logChan, "VindexLookup", "SELECT", "select name, user_id from name_user_map where name in ::name", 1)
 	testQueryLog(t, logChan, "TestExecute", "SELECT", sql, 1)
@@ -829,7 +816,7 @@ func TestSelectNormalize(t *testing.T) {
 		},
 	}}
 	require.Empty(t, sbc1.Queries)
-	utils.MustMatch(t, sbc2.Queries, wantQueries, "sbc2.Queries")
+	utils.MustMatch(t, wantQueries, sbc2.Queries, "sbc2.Queries")
 	sbc2.Queries = nil
 	masterSession.TargetString = ""
 }

go/vt/vtgate/vindexes/lookup_internal.go

@@ -80,30 +80,7 @@ func (lkp *lookupInternal) Lookup(vcursor VCursor, ids []sqltypes.Value, co vtga
 	if vcursor.InTransactionAndIsDML() {
 		sel = sel + " for update"
 	}
-	if !ids[0].IsIntegral() && !ids[0].IsBinary() {
-		// for non integral and binary type, fallback to send query per id
-		for _, id := range ids {
-			vars, err := sqltypes.BuildBindVariable([]interface{}{id})
-			if err != nil {
-				return nil, fmt.Errorf("lookup.Map: %v", err)
-			}
-			bindVars := map[string]*querypb.BindVariable{
-				lkp.FromColumns[0]: vars,
-			}
-			var result *sqltypes.Result
-			result, err = vcursor.Execute("VindexLookup", sel, bindVars, false /* rollbackOnError */, co)
-			if err != nil {
-				return nil, fmt.Errorf("lookup.Map: %v", err)
-			}
-			rows := make([][]sqltypes.Value, 0, len(result.Rows))
-			for _, row := range result.Rows {
-				rows = append(rows, []sqltypes.Value{row[1]})
-			}
-			results = append(results, &sqltypes.Result{
-				Rows: rows,
-			})
-		}
-	} else {
+	if ids[0].IsIntegral() {
 		// for integral or binary type, batch query all ids and then map them back to the input order
 		vars, err := sqltypes.BuildBindVariable(ids)
 		if err != nil {
@@ -126,6 +103,29 @@ func (lkp *lookupInternal) Lookup(vcursor VCursor, ids []sqltypes.Value, co vtga
 				Rows: resultMap[id.ToString()],
 			})
 		}
+	} else {
+		// for non integral and binary type, fallback to send query per id
+		for _, id := range ids {
+			vars, err := sqltypes.BuildBindVariable([]interface{}{id})
+			if err != nil {
+				return nil, fmt.Errorf("lookup.Map: %v", err)
+			}
+			bindVars := map[string]*querypb.BindVariable{
+				lkp.FromColumns[0]: vars,
+			}
+			var result *sqltypes.Result
+			result, err = vcursor.Execute("VindexLookup", sel, bindVars, false /* rollbackOnError */, co)
+			if err != nil {
+				return nil, fmt.Errorf("lookup.Map: %v", err)
+			}
+			rows := make([][]sqltypes.Value, 0, len(result.Rows))
+			for _, row := range result.Rows {
+				rows = append(rows, []sqltypes.Value{row[1]})
+			}
+			results = append(results, &sqltypes.Result{
+				Rows: rows,
+			})
+		}
 	}
 	return results, nil
 }