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infoschema: improve usability of SchemaByTable #56803

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merged 1 commit into from
Oct 23, 2024
Merged

infoschema: improve usability of SchemaByTable #56803

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9 changes: 8 additions & 1 deletion pkg/infoschema/infoschema.go
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Original file line number Diff line number Diff line change
Expand Up @@ -292,7 +292,14 @@ func SchemaByTable(is InfoSchema, tableInfo *model.TableInfo) (val *model.DBInfo
if tableInfo == nil {
return nil, false
}
return is.SchemaByID(tableInfo.DBID)
if tableInfo.DBID > 0 {
return is.SchemaByID(tableInfo.DBID)
}
tbl, ok := is.TableByID(stdctx.Background(), tableInfo.ID)
if !ok {
return nil, false
}
return is.SchemaByID(tbl.Meta().DBID)
}

func (is *infoSchema) TableByID(_ stdctx.Context, id int64) (val table.Table, ok bool) {
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9 changes: 9 additions & 0 deletions pkg/infoschema/infoschema_test.go
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Original file line number Diff line number Diff line change
Expand Up @@ -149,6 +149,15 @@ func TestBasic(t *testing.T) {
require.True(t, ok)
require.NotNil(t, schema)

b, err := json.Marshal(tblInfo)
require.NoError(t, err)
tblUnmarshal := &model.TableInfo{}
err = json.Unmarshal(b, tblUnmarshal)
require.NoError(t, err)
schema2, ok := infoschema.SchemaByTable(is, tblUnmarshal)
require.True(t, ok)
require.Equal(t, schema, schema2)

noexistTblInfo := &model.TableInfo{ID: 12345, Name: tblInfo.Name}
schema, ok = infoschema.SchemaByTable(is, noexistTblInfo)
require.False(t, ok)
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