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351 lines
8.6 KiB
351 lines
8.6 KiB
// Copyright 2019 PingCAP, Inc.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package expression
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import (
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"sort"
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"strings"
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"github.com/pingcap/errors"
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"github.com/pingcap/parser/mysql"
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"github.com/pingcap/tidb/types"
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"github.com/pingcap/tidb/util/chunk"
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"github.com/pingcap/tidb/util/printer"
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)
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func (b *builtinDatabaseSig) vectorized() bool {
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return true
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}
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// evalString evals a builtinDatabaseSig.
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// See https://dev.mysql.com/doc/refman/5.7/en/information-functions.html
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func (b *builtinDatabaseSig) vecEvalString(input *chunk.Chunk, result *chunk.Column) error {
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n := input.NumRows()
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currentDB := b.ctx.GetSessionVars().CurrentDB
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result.ReserveString(n)
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if currentDB == "" {
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for i := 0; i < n; i++ {
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result.AppendNull()
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}
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} else {
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for i := 0; i < n; i++ {
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result.AppendString(currentDB)
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}
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}
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return nil
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}
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func (b *builtinConnectionIDSig) vectorized() bool {
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return true
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}
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func (b *builtinConnectionIDSig) vecEvalInt(input *chunk.Chunk, result *chunk.Column) error {
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n := input.NumRows()
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data := b.ctx.GetSessionVars()
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if data == nil {
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return errors.Errorf("Missing session variable in `builtinConnectionIDSig.vecEvalInt`")
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}
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connectionID := int64(data.ConnectionID)
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result.ResizeInt64(n, false)
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i64s := result.Int64s()
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for i := 0; i < n; i++ {
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i64s[i] = connectionID
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}
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return nil
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}
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func (b *builtinTiDBVersionSig) vectorized() bool {
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return true
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}
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func (b *builtinTiDBVersionSig) vecEvalString(input *chunk.Chunk, result *chunk.Column) error {
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n := input.NumRows()
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result.ReserveString(n)
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info := printer.GetTiDBInfo()
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for i := 0; i < n; i++ {
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result.AppendString(info)
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}
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return nil
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}
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func (b *builtinRowCountSig) vectorized() bool {
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return true
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}
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// evalInt evals ROW_COUNT().
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// See https://dev.mysql.com/doc/refman/5.7/en/information-functions.html#function_row-count
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func (b *builtinRowCountSig) vecEvalInt(input *chunk.Chunk, result *chunk.Column) error {
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n := input.NumRows()
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result.ResizeInt64(n, false)
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i64s := result.Int64s()
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res := int64(b.ctx.GetSessionVars().StmtCtx.PrevAffectedRows)
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for i := 0; i < n; i++ {
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i64s[i] = res
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}
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return nil
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}
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func (b *builtinCurrentUserSig) vectorized() bool {
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return true
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}
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// evalString evals a builtinCurrentUserSig.
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// See https://dev.mysql.com/doc/refman/5.7/en/information-functions.html#function_current-user
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func (b *builtinCurrentUserSig) vecEvalString(input *chunk.Chunk, result *chunk.Column) error {
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n := input.NumRows()
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data := b.ctx.GetSessionVars()
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result.ReserveString(n)
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if data == nil || data.User == nil {
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return errors.Errorf("Missing session variable when eval builtin")
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}
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for i := 0; i < n; i++ {
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result.AppendString(data.User.AuthIdentityString())
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}
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return nil
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}
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func (b *builtinCurrentRoleSig) vectorized() bool {
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return true
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}
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// evalString evals a builtinCurrentUserSig.
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// See https://dev.mysql.com/doc/refman/5.7/en/information-functions.html#function_current-user
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func (b *builtinCurrentRoleSig) vecEvalString(input *chunk.Chunk, result *chunk.Column) error {
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n := input.NumRows()
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data := b.ctx.GetSessionVars()
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if data == nil || data.ActiveRoles == nil {
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return errors.Errorf("Missing session variable when eval builtin")
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}
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result.ReserveString(n)
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if len(data.ActiveRoles) == 0 {
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for i := 0; i < n; i++ {
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result.AppendString("")
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}
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return nil
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}
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sortedRes := make([]string, 0, 10)
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for _, r := range data.ActiveRoles {
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sortedRes = append(sortedRes, r.String())
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}
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sort.Strings(sortedRes)
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res := strings.Join(sortedRes, ",")
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for i := 0; i < n; i++ {
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result.AppendString(res)
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}
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return nil
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}
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func (b *builtinUserSig) vectorized() bool {
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return true
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}
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// evalString evals a builtinUserSig.
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// See https://dev.mysql.com/doc/refman/5.7/en/information-functions.html#function_user
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func (b *builtinUserSig) vecEvalString(input *chunk.Chunk, result *chunk.Column) error {
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n := input.NumRows()
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data := b.ctx.GetSessionVars()
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if data == nil || data.User == nil {
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return errors.Errorf("Missing session variable when eval builtin")
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}
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result.ReserveString(n)
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for i := 0; i < n; i++ {
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result.AppendString(data.User.String())
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}
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return nil
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}
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func (b *builtinTiDBIsDDLOwnerSig) vectorized() bool {
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return true
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}
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func (b *builtinTiDBIsDDLOwnerSig) vecEvalInt(input *chunk.Chunk, result *chunk.Column) error {
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n := input.NumRows()
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ddlOwnerChecker := b.ctx.DDLOwnerChecker()
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var res int64
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if ddlOwnerChecker.IsOwner() {
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res = 1
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}
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result.ResizeInt64(n, false)
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i64s := result.Int64s()
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for i := 0; i < n; i++ {
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i64s[i] = res
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}
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return nil
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}
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func (b *builtinFoundRowsSig) vectorized() bool {
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return true
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}
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func (b *builtinFoundRowsSig) vecEvalInt(input *chunk.Chunk, result *chunk.Column) error {
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data := b.ctx.GetSessionVars()
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if data == nil {
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return errors.Errorf("Missing session variable when eval builtin")
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}
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lastFoundRows := int64(data.LastFoundRows)
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n := input.NumRows()
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result.ResizeInt64(n, false)
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i64s := result.Int64s()
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for i := range i64s {
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i64s[i] = lastFoundRows
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}
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return nil
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}
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func (b *builtinBenchmarkSig) vectorized() bool {
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return b.constLoopCount > 0
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}
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func (b *builtinBenchmarkSig) vecEvalInt(input *chunk.Chunk, result *chunk.Column) error {
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n := input.NumRows()
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loopCount := b.constLoopCount
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arg, ctx := b.args[1], b.ctx
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evalType := arg.GetType().EvalType()
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buf, err := b.bufAllocator.get(evalType, n)
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if err != nil {
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return err
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}
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defer b.bufAllocator.put(buf)
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var k int64
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switch evalType {
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case types.ETInt:
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for ; k < loopCount; k++ {
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if err = arg.VecEvalInt(ctx, input, buf); err != nil {
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return err
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}
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}
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case types.ETReal:
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for ; k < loopCount; k++ {
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if err = arg.VecEvalReal(ctx, input, buf); err != nil {
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return err
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}
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}
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case types.ETDecimal:
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for ; k < loopCount; k++ {
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if err = arg.VecEvalDecimal(ctx, input, buf); err != nil {
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return err
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}
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}
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case types.ETString:
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for ; k < loopCount; k++ {
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if err = arg.VecEvalString(ctx, input, buf); err != nil {
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return err
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}
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}
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case types.ETDatetime, types.ETTimestamp:
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for ; k < loopCount; k++ {
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if err = arg.VecEvalTime(ctx, input, buf); err != nil {
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return err
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}
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}
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case types.ETDuration:
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for ; k < loopCount; k++ {
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if err = arg.VecEvalDuration(ctx, input, buf); err != nil {
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return err
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}
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}
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case types.ETJson:
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for ; k < loopCount; k++ {
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if err = arg.VecEvalJSON(ctx, input, buf); err != nil {
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return err
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}
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}
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default: // Should never go into here.
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return errors.Errorf("EvalType %v not implemented for builtin BENCHMARK()", evalType)
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}
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// Return value of BENCHMARK() is always 0.
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// even if args[1].IsNull(i)
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result.ResizeInt64(n, false)
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return nil
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}
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func (b *builtinLastInsertIDSig) vectorized() bool {
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return true
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}
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func (b *builtinLastInsertIDSig) vecEvalInt(input *chunk.Chunk, result *chunk.Column) error {
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n := input.NumRows()
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result.ResizeInt64(n, false)
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i64s := result.Int64s()
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res := int64(b.ctx.GetSessionVars().StmtCtx.PrevLastInsertID)
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for i := 0; i < n; i++ {
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i64s[i] = res
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}
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return nil
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}
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func (b *builtinLastInsertIDWithIDSig) vectorized() bool {
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return true
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}
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func (b *builtinLastInsertIDWithIDSig) vecEvalInt(input *chunk.Chunk, result *chunk.Column) error {
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if err := b.args[0].VecEvalInt(b.ctx, input, result); err != nil {
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return err
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}
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i64s := result.Int64s()
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for i := len(i64s) - 1; i >= 0; i-- {
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if !result.IsNull(i) {
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b.ctx.GetSessionVars().SetLastInsertID(uint64(i64s[i]))
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break
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}
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}
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return nil
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}
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func (b *builtinVersionSig) vectorized() bool {
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return true
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}
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func (b *builtinVersionSig) vecEvalString(input *chunk.Chunk, result *chunk.Column) error {
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n := input.NumRows()
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result.ReserveString(n)
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for i := 0; i < n; i++ {
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result.AppendString(mysql.ServerVersion)
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}
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return nil
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}
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func (b *builtinTiDBDecodeKeySig) vectorized() bool {
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return true
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}
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func (b *builtinTiDBDecodeKeySig) vecEvalString(input *chunk.Chunk, result *chunk.Column) error {
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n := input.NumRows()
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buf, err := b.bufAllocator.get(types.ETString, n)
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if err != nil {
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return err
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}
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defer b.bufAllocator.put(buf)
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if err := b.args[0].VecEvalString(b.ctx, input, buf); err != nil {
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return err
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}
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result.ReserveString(n)
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for i := 0; i < n; i++ {
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if buf.IsNull(i) {
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result.AppendNull()
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continue
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}
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result.AppendString(decodeKey(b.ctx, buf.GetString(i)))
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}
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return nil
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}
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