github.com/matrixorigin/matrixone@v1.2.0/pkg/frontend/back_result_row_stmt.go (about)

     1  // Copyright 2024 Matrix Origin
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  //      http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12  // See the License for the specific language governing permissions and
    13  // limitations under the License.
    14  
    15  package frontend
    16  
    17  import (
    18  	"fmt"
    19  	"time"
    20  
    21  	"go.uber.org/zap"
    22  
    23  	"github.com/matrixorigin/matrixone/pkg/pb/plan"
    24  	plan2 "github.com/matrixorigin/matrixone/pkg/sql/plan"
    25  )
    26  
    27  func executeResultRowStmtInBack(backSes *backSession,
    28  	execCtx *ExecCtx) (err error) {
    29  	var columns []interface{}
    30  	mrs := backSes.GetMysqlResultSet()
    31  	// cw.Compile might rewrite sql, here we fetch the latest version
    32  	columns, err = execCtx.cw.GetColumns(execCtx.reqCtx)
    33  	if err != nil {
    34  		logError(backSes, backSes.GetDebugString(),
    35  			"Failed to get columns from computation handler",
    36  			zap.Error(err))
    37  		return
    38  	}
    39  	for _, c := range columns {
    40  		mysqlc := c.(Column)
    41  		mrs.AddColumn(mysqlc)
    42  	}
    43  	if c, ok := execCtx.cw.(*TxnComputationWrapper); ok {
    44  		backSes.rs = &plan.ResultColDef{ResultCols: plan2.GetResultColumnsFromPlan(c.plan)}
    45  	}
    46  	runBegin := time.Now()
    47  	if _, err = execCtx.runner.Run(0); err != nil {
    48  		return
    49  	}
    50  
    51  	// only log if run time is longer than 1s
    52  	if time.Since(runBegin) > time.Second {
    53  		logInfo(backSes, backSes.GetDebugString(), fmt.Sprintf("time of Exec.Run : %s", time.Since(runBegin).String()))
    54  	}
    55  	return
    56  }