Merge pull request #7186 from csquared/sequence-tables-in-vtexplain

add sequence table support for vtexplain

go/vt/vtexplain/vtexplain_vttablet.go

@@ -371,7 +371,12 @@ func initTabletEnvironment(ddls []sqlparser.DDLStatement, opts *Options) error {
  showTableRows := make([][]sqltypes.Value, 0, 4)
  for _, ddl := range ddls {
  table := ddl.GetTable().Name.String()
- showTableRows = append(showTableRows, mysql.BaseShowTablesRow(table, false, ""))
+ options := ""
+ spec := ddl.GetTableSpec()
+ if spec != nil && strings.Contains(spec.Options, "vitess_sequence") {
+ options = "vitess_sequence"
+ }
+ showTableRows = append(showTableRows, mysql.BaseShowTablesRow(table, false, options))
  }
  schemaQueries[mysql.BaseShowTables] = &sqltypes.Result{
  Fields: mysql.BaseShowTablesFields,

go/vt/vtexplain/vtexplain_vttablet_test.go

@@ -20,6 +20,8 @@ import (
  "encoding/json"
  "testing"
 
+ "vitess.io/vitess/go/vt/vttablet/tabletserver/schema"
+
  topodatapb "vitess.io/vitess/go/vt/proto/topodata"
 )
 
@@ -43,6 +45,13 @@ create table t4 like t3;
 
 create table t5 (like t2);
 
+create table t1_seq(
+ id int,
+ next_id bigint,
+ cache bigint,
+ primary key(id)
+) comment 'vitess_sequence';
+
 create table test_partitioned (
  id bigint,
  date_create int,
@@ -114,6 +123,11 @@ create table test_partitioned (
  if t5.HasPrimary() || len(t5.PKColumns) != 0 {
  t.Errorf("expected !HasPrimary && t5.PKColumns == [] got %v", t5.PKColumns)
  }
+
+ seq := tables["t1_seq"]
+ if seq.Type != schema.Sequence {
+ t.Errorf("expected t1_seq to be a sequence table but is type %v", seq.Type)
+ }
 }
 
 func TestErrParseSchema(t *testing.T) {