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ddl, executor: fix rename table compatibility #8709

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merged 4 commits into from Dec 22, 2018
Merged

ddl, executor: fix rename table compatibility #8709

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89e0f2c
ddl, executor: fix rename table compatibility
zimulala Dec 17, 2018
6533627
ddl: update tests
zimulala Dec 17, 2018
485b369
Merge branch 'master' into rename-table
jackysp Dec 21, 2018
9d3eb00
Merge branch 'master' into rename-table
zz-jason Dec 22, 2018
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17 changes: 12 additions & 5 deletions ddl/db_test.go
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Expand Up @@ -1431,14 +1431,16 @@ func (s *testDBSuite) TestTruncateTable(c *C) {
}

func (s *testDBSuite) TestRenameTable(c *C) {
s.testRenameTable(c, "rename table %s to %s")
isAlterTable := false
s.testRenameTable(c, "rename table %s to %s", isAlterTable)
}

func (s *testDBSuite) TestAlterTableRenameTable(c *C) {
s.testRenameTable(c, "alter table %s rename to %s")
isAlterTable := true
s.testRenameTable(c, "alter table %s rename to %s", isAlterTable)
}

func (s *testDBSuite) testRenameTable(c *C, sql string) {
func (s *testDBSuite) testRenameTable(c *C, sql string, isAlterTable bool) {
s.tk = testkit.NewTestKit(c, s.store)
s.tk.MustExec("use test")
// for different databases
Expand Down Expand Up @@ -1489,8 +1491,13 @@ func (s *testDBSuite) testRenameTable(c *C, sql string) {
s.tk.MustExec("use test1")
s.tk.MustExec("create table if not exists t (c1 int, c2 int)")
s.tk.MustExec("create table if not exists t1 (c1 int, c2 int)")
s.tk.MustExec(fmt.Sprintf(sql, "test1.t", "t"))
s.tk.MustExec(fmt.Sprintf(sql, "test1.t1", "test1.t1"))
if isAlterTable {
s.tk.MustExec(fmt.Sprintf(sql, "test1.t", "t"))
s.tk.MustExec(fmt.Sprintf(sql, "test1.t1", "test1.T1"))
} else {
s.testErrorCode(c, fmt.Sprintf(sql, "test1.t", "t"), tmysql.ErrTableExists)
s.testErrorCode(c, fmt.Sprintf(sql, "test1.t1", "test1.T1"), tmysql.ErrTableExists)
}

s.tk.MustExec("drop database test1")
}
Expand Down
2 changes: 1 addition & 1 deletion ddl/ddl.go
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Expand Up @@ -218,7 +218,7 @@ type DDL interface {
DropIndex(ctx sessionctx.Context, tableIdent ast.Ident, indexName model.CIStr) error
AlterTable(ctx sessionctx.Context, tableIdent ast.Ident, spec []*ast.AlterTableSpec) error
TruncateTable(ctx sessionctx.Context, tableIdent ast.Ident) error
RenameTable(ctx sessionctx.Context, oldTableIdent, newTableIdent ast.Ident) error
RenameTable(ctx sessionctx.Context, oldTableIdent, newTableIdent ast.Ident, isAlterTable bool) error

// GetLease returns current schema lease time.
GetLease() time.Duration
Expand Down
7 changes: 4 additions & 3 deletions ddl/ddl_api.go
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Expand Up @@ -1291,7 +1291,8 @@ func (d *ddl) AlterTable(ctx sessionctx.Context, ident ast.Ident, specs []*ast.A
err = d.AlterColumn(ctx, ident, spec)
case ast.AlterTableRenameTable:
newIdent := ast.Ident{Schema: spec.NewTable.Schema, Name: spec.NewTable.Name}
err = d.RenameTable(ctx, ident, newIdent)
isAlterTable := true
err = d.RenameTable(ctx, ident, newIdent, isAlterTable)
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case ast.AlterTableDropPrimaryKey:
err = ErrUnsupportedModifyPrimaryKey.GenWithStackByArgs("drop")
case ast.AlterTableRenameIndex:
Expand Down Expand Up @@ -2237,7 +2238,7 @@ func (d *ddl) TruncateTable(ctx sessionctx.Context, ti ast.Ident) error {
return errors.Trace(err)
}

func (d *ddl) RenameTable(ctx sessionctx.Context, oldIdent, newIdent ast.Ident) error {
func (d *ddl) RenameTable(ctx sessionctx.Context, oldIdent, newIdent ast.Ident, isAlterTable bool) error {
is := d.GetInformationSchema(ctx)
oldSchema, ok := is.SchemaByName(oldIdent.Schema)
if !ok {
Expand All @@ -2247,7 +2248,7 @@ func (d *ddl) RenameTable(ctx sessionctx.Context, oldIdent, newIdent ast.Ident)
if err != nil {
return errFileNotFound.GenWithStackByArgs(oldIdent.Schema, oldIdent.Name)
}
if newIdent.Schema.L == oldIdent.Schema.L && newIdent.Name.L == oldIdent.Name.L {
if isAlterTable && newIdent.Schema.L == oldIdent.Schema.L && newIdent.Name.L == oldIdent.Name.L {
// oldIdent is equal to newIdent, do nothing
return nil
}
Expand Down
3 changes: 2 additions & 1 deletion executor/ddl.go
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Expand Up @@ -129,7 +129,8 @@ func (e *DDLExec) executeRenameTable(s *ast.RenameTableStmt) error {
}
oldIdent := ast.Ident{Schema: s.OldTable.Schema, Name: s.OldTable.Name}
newIdent := ast.Ident{Schema: s.NewTable.Schema, Name: s.NewTable.Name}
err := domain.GetDomain(e.ctx).DDL().RenameTable(e.ctx, oldIdent, newIdent)
isAlterTable := false
err := domain.GetDomain(e.ctx).DDL().RenameTable(e.ctx, oldIdent, newIdent, isAlterTable)
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Why not pass false directly?

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Agree.

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This makes it more readable.

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I don't think it is necessary.

return errors.Trace(err)
}

Expand Down