/
function_layout.go
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/
function_layout.go
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// Copyright 2021 - 2022 Matrix Origin
//
// 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,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package function
type FuncExplainLayout int32
const (
STANDARD_FUNCTION FuncExplainLayout = iota // standard function
UNARY_ARITHMETIC_OPERATOR // unary arithmetic operator
BINARY_ARITHMETIC_OPERATOR // binary arithmetic operator
UNARY_LOGICAL_OPERATOR // unary logical operator
BINARY_LOGICAL_OPERATOR // binary logical operator
COMPARISON_OPERATOR // comparison operator
CAST_EXPRESSION // CAST expression
CASE_WHEN_EXPRESSION // CASE ... WHEN ... expression
BETWEEN_AND_EXPRESSION // BETWEEN ... AND ... expression
IN_PREDICATE // IN predicate
IS_EXPRESSION // IS expression
IS_NOT_EXPRESSION // IS NOT operator
NOPARAMETER_FUNCTION // noparameter function
DATE_INTERVAL_EXPRESSION // DATE expression, INTERVAL expression
EXTRACT_FUNCTION // EXTRACT function,such as EXTRACT(MONTH/DAY/HOUR/MINUTE/SECOND FROM p)
POSITION_FUNCTION // POSITION function, such as POSITION(substr IN str)
EXISTS_ANY_PREDICATE
UNKNOW_KIND_FUNCTION
)