func (s *ShowPlan) fetchShowGrants(ctx context.Context) error {
// Get checker
checker := privilege.GetPrivilegeChecker(ctx)
if checker == nil {
return errors.New("Miss privilege checker!")
}
gs, err := checker.ShowGrants(ctx, s.User)
if err != nil {
return errors.Trace(err)
}
for _, g := range gs {
data := []interface{}{g}
s.rows = append(s.rows, &plan.Row{Data: data})
}
return nil
}
func (e *ShowExec) fetchShowGrants() error {
// Get checker
checker := privilege.GetPrivilegeChecker(e.ctx)
if checker == nil {
return errors.New("Miss privilege checker!")
}
gs, err := checker.ShowGrants(e.ctx, e.User)
if err != nil {
return errors.Trace(err)
}
for _, g := range gs {
data := types.MakeDatums(g)
e.rows = append(e.rows, &Row{Data: data})
}
return nil
}
// Exec implements the stmt.Statement Exec interface.
func (s *DropTableStmt) Exec(ctx context.Context) (rset.Recordset, error) {
var notExistTables []string
is := sessionctx.GetDomain(ctx).InfoSchema()
for _, ti := range s.TableIdents {
fullti := ti.Full(ctx)
schema, ok := is.SchemaByName(fullti.Schema)
if !ok {
// TODO: we should return special error for table not exist, checking "not exist" is not enough,
// because some other errors may contain this error string too.
notExistTables = append(notExistTables, ti.String())
continue
}
tb, err := is.TableByName(fullti.Schema, fullti.Name)
if err != nil && strings.HasSuffix(err.Error(), "not exist") {
notExistTables = append(notExistTables, ti.String())
continue
} else if err != nil {
return nil, errors.Trace(err)
}
// Check Privilege
privChecker := privilege.GetPrivilegeChecker(ctx)
hasPriv, err := privChecker.Check(ctx, schema, tb.Meta(), mysql.DropPriv)
if err != nil {
return nil, errors.Trace(err)
}
if !hasPriv {
return nil, errors.Errorf("You do not have the privilege to drop table %s.%s.", ti.Schema, ti.Name)
}
err = sessionctx.GetDomain(ctx).DDL().DropTable(ctx, fullti)
if terror.ErrorEqual(err, ddl.ErrNotExists) || terror.DatabaseNotExists.Equal(err) {
notExistTables = append(notExistTables, ti.String())
} else if err != nil {
return nil, errors.Trace(err)
}
}
if len(notExistTables) > 0 && !s.IfExists {
return nil, errors.Errorf("DROP TABLE: table %s does not exist", strings.Join(notExistTables, ","))
}
return nil, nil
}
func (e *DDLExec) executeDropTable(s *ast.DropTableStmt) error {
var notExistTables []string
for _, tn := range s.Tables {
fullti := ast.Ident{Schema: tn.Schema, Name: tn.Name}
schema, ok := e.is.SchemaByName(tn.Schema)
if !ok {
// TODO: we should return special error for table not exist, checking "not exist" is not enough,
// because some other errors may contain this error string too.
notExistTables = append(notExistTables, fullti.String())
continue
}
tb, err := e.is.TableByName(tn.Schema, tn.Name)
if err != nil && strings.HasSuffix(err.Error(), "not exist") {
notExistTables = append(notExistTables, fullti.String())
continue
} else if err != nil {
return errors.Trace(err)
}
// Check Privilege
privChecker := privilege.GetPrivilegeChecker(e.ctx)
hasPriv, err := privChecker.Check(e.ctx, schema, tb.Meta(), mysql.DropPriv)
if err != nil {
return errors.Trace(err)
}
if !hasPriv {
return errors.Errorf("You do not have the privilege to drop table %s.%s.", tn.Schema, tn.Name)
}
err = sessionctx.GetDomain(e.ctx).DDL().DropTable(e.ctx, fullti)
if infoschema.ErrDatabaseNotExists.Equal(err) || infoschema.ErrTableNotExists.Equal(err) {
notExistTables = append(notExistTables, fullti.String())
} else if err != nil {
return errors.Trace(err)
}
}
if len(notExistTables) > 0 && !s.IfExists {
return infoschema.ErrTableDropExists.Gen("DROP TABLE: table %s does not exist", strings.Join(notExistTables, ","))
}
return nil
}
// DropTable will proceed even if some table in the list does not exists.
func (d *ddl) DropTable(ctx context.Context, ti table.Ident) (err error) {
is := d.GetInformationSchema()
schema, ok := is.SchemaByName(ti.Schema)
if !ok {
return terror.DatabaseNotExists.Gen("database %s not exists", ti.Schema)
}
tb, err := is.TableByName(ti.Schema, ti.Name)
if err != nil {
return errors.Trace(err)
}
// Check Privilege
privChecker := privilege.GetPrivilegeChecker(ctx)
hasPriv, err := privChecker.Check(ctx, schema, tb.Meta(), mysql.DropPriv)
if err != nil {
return errors.Trace(err)
}
if !hasPriv {
return errors.Errorf("You do not have the privilege to drop table %s.%s.", ti.Schema, ti.Name)
}
err = kv.RunInNewTxn(d.store, false, func(txn kv.Transaction) error {
t := meta.NewMeta(txn)
err := d.verifySchemaMetaVersion(t, is.SchemaMetaVersion())
if err != nil {
return errors.Trace(err)
}
err = t.DropTable(schema.ID, tb.Meta().ID)
return errors.Trace(err)
})
if d.onDDLChange != nil {
err = d.onDDLChange(err)
if err != nil {
return errors.Trace(err)
}
}
err = d.deleteTableData(ctx, tb)
return errors.Trace(err)
}
