diff --git a/ast/ast.go b/ast/ast.go
index 6eacd25131222..3f34a37b87646 100644
--- a/ast/ast.go
+++ b/ast/ast.go
@@ -146,9 +146,6 @@ type RecordSet interface {
 	// NewChunk creates a new chunk with initial capacity.
 	NewChunk() *chunk.Chunk
 
-	// SupportChunk check if the RecordSet supports Chunk structure.
-	SupportChunk() bool
-
 	// Close closes the underlying iterator, call Next after Close will
 	// restart the iteration.
 	Close() error
diff --git a/executor/adapter.go b/executor/adapter.go
index aaa30e2983fa4..37d2cf4291b6d 100644
--- a/executor/adapter.go
+++ b/executor/adapter.go
@@ -131,10 +131,6 @@ func (a *recordSet) NewChunk() *chunk.Chunk {
 	return chunk.NewChunk(a.executor.retTypes())
 }
 
-func (a *recordSet) SupportChunk() bool {
-	return true
-}
-
 func (a *recordSet) Close() error {
 	err := a.executor.Close()
 	a.stmt.logSlowQuery(a.txnStartTS, a.lastErr == nil)
diff --git a/server/conn.go b/server/conn.go
index fb2e9e382957f..cac1fd854a2f1 100644
--- a/server/conn.go
+++ b/server/conn.go
@@ -924,7 +924,7 @@ func (cc *clientConn) writeResultset(ctx context.Context, rs ResultSet, binary b
 		buf = buf[:stackSize]
 		log.Errorf("query: %s:\n%s", cc.lastCmd, buf)
 	}()
-	if cc.server.cfg.EnableChunk && rs.SupportChunk() {
+	if cc.server.cfg.EnableChunk {
 		err := cc.writeChunks(ctx, rs, binary, more)
 		if err != nil {
 			return errors.Trace(err)
diff --git a/server/driver.go b/server/driver.go
index 0ff8af9309c6f..c59895dc5c0d2 100644
--- a/server/driver.go
+++ b/server/driver.go
@@ -124,7 +124,6 @@ type PreparedStatement interface {
 type ResultSet interface {
 	Columns() []*ColumnInfo
 	Next(context.Context) (types.Row, error)
-	SupportChunk() bool
 	NewChunk() *chunk.Chunk
 	NextChunk(context.Context, *chunk.Chunk) error
 	Close() error
diff --git a/server/driver_tidb.go b/server/driver_tidb.go
index 181201111cbab..ed934a58e3c9c 100644
--- a/server/driver_tidb.go
+++ b/server/driver_tidb.go
@@ -306,10 +306,6 @@ func (trs *tidbResultSet) NextChunk(ctx context.Context, chk *chunk.Chunk) error
 	return trs.recordSet.NextChunk(ctx, chk)
 }
 
-func (trs *tidbResultSet) SupportChunk() bool {
-	return trs.recordSet.SupportChunk()
-}
-
 func (trs *tidbResultSet) Close() error {
 	return trs.recordSet.Close()
 }
diff --git a/statistics/statistics_test.go b/statistics/statistics_test.go
index bdd40c98ea301..f1c4c2ffc13a4 100644
--- a/statistics/statistics_test.go
+++ b/statistics/statistics_test.go
@@ -109,10 +109,6 @@ func (r *recordSet) NewChunk() *chunk.Chunk {
 	return chunk.NewChunk(fields)
 }
 
-func (r *recordSet) SupportChunk() bool {
-	return true
-}
-
 func (r *recordSet) Close() error {
 	r.cursor = 0
 	return nil
diff --git a/store/mockstore/mocktikv/analyze.go b/store/mockstore/mocktikv/analyze.go
index b42a77b525634..c81ac84218c0e 100644
--- a/store/mockstore/mocktikv/analyze.go
+++ b/store/mockstore/mocktikv/analyze.go
@@ -238,10 +238,6 @@ func (e *analyzeColumnsExec) NewChunk() *chunk.Chunk {
 	return chunk.NewChunk(fields)
 }
 
-func (e *analyzeColumnsExec) SupportChunk() bool {
-	return true
-}
-
 // Close implements the ast.RecordSet Close interface.
 func (e *analyzeColumnsExec) Close() error {
 	return nil
diff --git a/tidb.go b/tidb.go
index aca342d1cd2fc..fb259d30f8e46 100644
--- a/tidb.go
+++ b/tidb.go
@@ -217,7 +217,7 @@ func GetRows4Test(ctx context.Context, sctx sessionctx.Context, rs ast.RecordSet
 		return nil, nil
 	}
 	var rows []types.Row
-	if sctx.GetSessionVars().EnableChunk && rs.SupportChunk() {
+	if sctx.GetSessionVars().EnableChunk {
 		for {
 			// Since we collect all the rows, we can not reuse the chunk.
 			chk := rs.NewChunk()