forked from pingcap/tidb
/
truncate.go
61 lines (51 loc) · 1.72 KB
/
truncate.go
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// Copyright 2015 PingCAP, Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// See the License for the specific language governing permissions and
// limitations under the License.
package stmts
import (
"github.com/pingcap/tidb/context"
"github.com/pingcap/tidb/rset"
"github.com/pingcap/tidb/stmt"
"github.com/pingcap/tidb/table"
"github.com/pingcap/tidb/util/format"
)
var _ stmt.Statement = (*TruncateTableStmt)(nil)
// TruncateTableStmt is a statement to empty a table completely.
// See: https://dev.mysql.com/doc/refman/5.7/en/truncate-table.html
type TruncateTableStmt struct {
TableIdent table.Ident
Text string
}
// Explain implements the stmt.Statement Explain interface.
func (s *TruncateTableStmt) Explain(ctx context.Context, w format.Formatter) {
w.Format("%s\n", s.Text)
}
// IsDDL implements the stmt.Statement IsDDL interface.
func (s *TruncateTableStmt) IsDDL() bool {
return false
}
// OriginText implements the stmt.Statement OriginText interface.
func (s *TruncateTableStmt) OriginText() string {
return s.Text
}
// SetText implements the stmt.Statement SetText interface.
func (s *TruncateTableStmt) SetText(text string) {
s.Text = text
}
// Exec implements the stmt.Statement Exec interface.
func (s *TruncateTableStmt) Exec(ctx context.Context) (rset.Recordset, error) {
t, err := getTable(ctx, s.TableIdent)
if err != nil {
return nil, err
}
return nil, t.Truncate(ctx)
}