github.com/matrixorigin/matrixone@v0.7.0/pkg/sql/plan/function/operator/isnotnull.go (about)

     1  // Copyright 2022 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 operator
    16  
    17  import (
    18  	"github.com/matrixorigin/matrixone/pkg/container/nulls"
    19  	"github.com/matrixorigin/matrixone/pkg/container/types"
    20  	"github.com/matrixorigin/matrixone/pkg/container/vector"
    21  	"github.com/matrixorigin/matrixone/pkg/vm/process"
    22  )
    23  
    24  func IsNotNull(vectors []*vector.Vector, proc *process.Process) (*vector.Vector, error) {
    25  	input := vectors[0]
    26  	retType := types.T_bool.ToType()
    27  	if input.IsScalar() {
    28  		if input.IsScalarNull() {
    29  			return vector.NewConstFixed(retType, input.Length(), false, proc.Mp()), nil
    30  		} else {
    31  			return vector.NewConstFixed(retType, input.Length(), true, proc.Mp()), nil
    32  		}
    33  	} else {
    34  		vlen := input.Length()
    35  		vec := vector.PreAllocType(retType, vlen, vlen, proc.Mp())
    36  		vals := vector.MustTCols[bool](vec)
    37  		for i := range vals {
    38  			if nulls.Contains(input.Nsp, uint64(i)) {
    39  				vals[i] = false
    40  			} else {
    41  				vals[i] = true
    42  			}
    43  		}
    44  		return vec, nil
    45  	}
    46  }