Golang types.DefaultTypeForValue函数代码示例

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本文整理汇总了Golang中github.com/pingcap/tidb/util/types.DefaultTypeForValue函数的典型用法代码示例。如果您正苦于以下问题：Golang DefaultTypeForValue函数的具体用法？Golang DefaultTypeForValue怎么用？Golang DefaultTypeForValue使用的例子？那么恭喜您, 这里精选的函数代码示例或许可以为您提供帮助。

在下文中一共展示了DefaultTypeForValue函数的6个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于我们的系统推荐出更棒的Golang代码示例。

示例1: NewValueExpr

// NewValueExpr creates a ValueExpr with value, and sets default field type.
func NewValueExpr(value interface{}) *ValueExpr {
	if ve, ok := value.(*ValueExpr); ok {
		return ve
	}
	ve := &ValueExpr{}
	ve.SetValue(value)
	ve.Type = types.DefaultTypeForValue(value)
	return ve
}

开发者ID:duzhanyuan，项目名称:tidb，代码行数:10，代码来源:expressions.go

示例2: NewValueExpr

// NewValueExpr creates a ValueExpr with value, and sets default field type.
func NewValueExpr(value interface{}) *ValueExpr {
	ve := &ValueExpr{}
	ve.Data = types.RawData(value)
	if _, ok := value.(UnquoteString); ok {
		ve.Type = types.NewFieldType(mysql.TypeVarchar)
		ve.Type.Charset = mysql.DefaultCharset
		ve.Type.Collate = mysql.DefaultCollationName
		return ve
	}
	ve.Type = types.DefaultTypeForValue(value)
	return ve
}

开发者ID:lovedboy，项目名称:tidb，代码行数:13，代码来源:expressions.go

示例3: Leave

func (v *typeInferrer) Leave(in ast.Node) (out ast.Node, ok bool) {
	switch x := in.(type) {
	case *ast.ColumnNameExpr:
		x.SetType(&x.Refer.Column.FieldType)
	case *ast.FuncCastExpr:
		x.SetType(x.Tp)
	case *ast.SelectStmt:
		v.selectStmt(x)
	case *ast.ParamMarkerExpr:
		x.SetType(types.DefaultTypeForValue(x.GetValue()))
	case *ast.BinaryOperationExpr:
		v.binaryOperation(x)
	case *ast.UnaryOperationExpr:
		v.unaryOperation(x)
	case *ast.BetweenExpr:
		x.SetType(types.NewFieldType(mysql.TypeLonglong))
	case *ast.CompareSubqueryExpr:
		x.SetType(types.NewFieldType(mysql.TypeLonglong))
	case *ast.ExistsSubqueryExpr:
		x.SetType(types.NewFieldType(mysql.TypeLonglong))
	case *ast.PatternInExpr:
		x.SetType(types.NewFieldType(mysql.TypeLonglong))
	case *ast.PatternLikeExpr:
		x.SetType(types.NewFieldType(mysql.TypeLonglong))
	case *ast.PatternRegexpExpr:
		x.SetType(types.NewFieldType(mysql.TypeLonglong))
	case *ast.IsNullExpr:
		x.SetType(types.NewFieldType(mysql.TypeLonglong))
	case *ast.IsTruthExpr:
		x.SetType(types.NewFieldType(mysql.TypeLonglong))
	case *ast.ParenthesesExpr:
		x.SetType(x.Expr.GetType())
	case *ast.AggregateFuncExpr:
		v.aggregateFunc(x)
		// TODO: handle all expression types.
	}
	return in, true
}

开发者ID:AkihiroSuda，项目名称:tidb，代码行数:38，代码来源:typeinferer.go

示例4: Leave

func (v *typeInferrer) Leave(in ast.Node) (out ast.Node, ok bool) {
	switch x := in.(type) {
	case *ast.AggregateFuncExpr:
		v.aggregateFunc(x)
	case *ast.BetweenExpr:
		x.SetType(types.NewFieldType(mysql.TypeLonglong))
		x.Type.Charset = charset.CharsetBin
		x.Type.Collate = charset.CollationBin
	case *ast.BinaryOperationExpr:
		v.binaryOperation(x)
	case *ast.CaseExpr:
		v.handleCaseExpr(x)
	case *ast.ColumnNameExpr:
		x.SetType(&x.Refer.Column.FieldType)
	case *ast.CompareSubqueryExpr:
		x.SetType(types.NewFieldType(mysql.TypeLonglong))
		x.Type.Charset = charset.CharsetBin
		x.Type.Collate = charset.CollationBin
	case *ast.ExistsSubqueryExpr:
		x.SetType(types.NewFieldType(mysql.TypeLonglong))
		x.Type.Charset = charset.CharsetBin
		x.Type.Collate = charset.CollationBin
	case *ast.FuncCallExpr:
		v.handleFuncCallExpr(x)
	case *ast.FuncCastExpr:
		x.SetType(x.Tp)
		if len(x.Type.Charset) == 0 {
			x.Type.Charset, x.Type.Collate = types.DefaultCharsetForType(x.Type.Tp)
		}
	case *ast.IsNullExpr:
		x.SetType(types.NewFieldType(mysql.TypeLonglong))
		x.Type.Charset = charset.CharsetBin
		x.Type.Collate = charset.CollationBin
	case *ast.IsTruthExpr:
		x.SetType(types.NewFieldType(mysql.TypeLonglong))
		x.Type.Charset = charset.CharsetBin
		x.Type.Collate = charset.CollationBin
	case *ast.ParamMarkerExpr:
		x.SetType(types.DefaultTypeForValue(x.GetValue()))
	case *ast.ParenthesesExpr:
		x.SetType(x.Expr.GetType())
	case *ast.PatternInExpr:
		x.SetType(types.NewFieldType(mysql.TypeLonglong))
		x.Type.Charset = charset.CharsetBin
		x.Type.Collate = charset.CollationBin
	case *ast.PatternLikeExpr:
		x.SetType(types.NewFieldType(mysql.TypeLonglong))
		x.Type.Charset = charset.CharsetBin
		x.Type.Collate = charset.CollationBin
	case *ast.PatternRegexpExpr:
		x.SetType(types.NewFieldType(mysql.TypeLonglong))
		x.Type.Charset = charset.CharsetBin
		x.Type.Collate = charset.CollationBin
	case *ast.SelectStmt:
		v.selectStmt(x)
	case *ast.UnaryOperationExpr:
		v.unaryOperation(x)
	case *ast.ValueExpr:
		v.handleValueExpr(x)
	case *ast.VariableExpr:
		x.SetType(types.NewFieldType(mysql.TypeVarString))
		x.Type.Charset = v.defaultCharset
		cln, err := charset.GetDefaultCollation(v.defaultCharset)
		if err != nil {
			v.err = err
		}
		x.Type.Collate = cln
		// TODO: handle all expression types.
	}
	return in, true
}

开发者ID:yuanfeng0905，项目名称:tidb，代码行数:71，代码来源:typeinferer.go

示例5: handleValueExpr

func (v *typeInferrer) handleValueExpr(x *ast.ValueExpr) {
	tp := types.DefaultTypeForValue(x.GetValue())
	// Set charset and collation
	x.SetType(tp)
}

开发者ID:yuanfeng0905，项目名称:tidb，代码行数:5，代码来源:typeinferer.go

示例6: handleValueExpr

func (v *typeInferrer) handleValueExpr(x *ast.ValueExpr) {
	types.DefaultTypeForValue(x.GetValue(), x.GetType())
}

开发者ID:XuHuaiyu，项目名称:tidb，代码行数:3，代码来源:typeinferer.go

注：本文中的github.com/pingcap/tidb/util/types.DefaultTypeForValue函数示例由纯净天空整理自Github/MSDocs等源码及文档管理平台，相关代码片段筛选自各路编程大神贡献的开源项目，源码版权归原作者所有，传播和使用请参考对应项目的License；未经允许，请勿转载。