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

     1  // Copyright 2021 - 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 function
    16  
    17  type FuncExplainLayout int32
    18  
    19  const (
    20  	STANDARD_FUNCTION          FuncExplainLayout = 0 //standard function
    21  	UNARY_ARITHMETIC_OPERATOR  FuncExplainLayout = 1 //unary arithmetic operator
    22  	BINARY_ARITHMETIC_OPERATOR FuncExplainLayout = 2 //binary arithmetic operator
    23  	UNARY_LOGICAL_OPERATOR     FuncExplainLayout = 3 // unary logical operator
    24  	BINARY_LOGICAL_OPERATOR    FuncExplainLayout = 4 // binary logical operator
    25  	COMPARISON_OPERATOR        FuncExplainLayout = 5 // comparison operator
    26  	CAST_EXPRESSION            FuncExplainLayout = 6 // cast expression
    27  	CASE_WHEN_EXPRESSION       FuncExplainLayout = 7 // case when expression
    28  	BETWEEN_AND_EXPRESSION     FuncExplainLayout = 8
    29  	IN_PREDICATE               FuncExplainLayout = 9  //query 'in' predicate
    30  	EXISTS_ANY_PREDICATE       FuncExplainLayout = 10 //query predicate,such as exist,all,any
    31  	IS_NULL_EXPRESSION         FuncExplainLayout = 11 // is null expression
    32  	NOPARAMETER_FUNCTION       FuncExplainLayout = 12 // noparameter function
    33  	DATE_INTERVAL_EXPRESSION   FuncExplainLayout = 13 // date expression,interval expression
    34  	EXTRACT_FUNCTION           FuncExplainLayout = 14 // extract function,such as extract(MONTH/DAY/HOUR/MINUTE/SECOND FROM p)
    35  	POSITION_FUNCTION          FuncExplainLayout = 15 // position function, such as POSITION(substr IN str)
    36  	UNKNOW_KIND_FUNCTION       FuncExplainLayout = 16
    37  )