本文整理匯總了Golang中github.com/pingcap/tidb/ast.AggregateFuncExpr.SetType方法的典型用法代碼示例。如果您正苦於以下問題：Golang AggregateFuncExpr.SetType方法的具體用法？Golang AggregateFuncExpr.SetType怎麽用？Golang AggregateFuncExpr.SetType使用的例子？那麽, 這裏精選的方法代碼示例或許可以為您提供幫助。您也可以進一步了解該方法所在類github.com/pingcap/tidb/ast.AggregateFuncExpr的用法示例。
在下文中一共展示了AggregateFuncExpr.SetType方法的3個代碼示例，這些例子默認根據受歡迎程度排序。您可以為喜歡或者感覺有用的代碼點讚，您的評價將有助於係統推薦出更棒的Golang代碼示例。
示例1: aggregateFunc
func (v *typeInferrer) aggregateFunc(x *ast.AggregateFuncExpr) {
name := strings.ToLower(x.F)
switch name {
case "count":
ft := types.NewFieldType(mysql.TypeLonglong)
ft.Flen = 21
x.SetType(ft)
}
}示例2: aggregateFunc
func (v *typeInferrer) aggregateFunc(x *ast.AggregateFuncExpr) {
name := strings.ToLower(x.F)
switch name {
case ast.AggFuncCount:
ft := types.NewFieldType(mysql.TypeLonglong)
ft.Flen = 21
ft.Charset = charset.CharsetBin
ft.Collate = charset.CollationBin
x.SetType(ft)
case ast.AggFuncMax, ast.AggFuncMin:
x.SetType(x.Args[0].GetType())
case ast.AggFuncSum, ast.AggFuncAvg:
ft := types.NewFieldType(mysql.TypeNewDecimal)
ft.Charset = charset.CharsetBin
ft.Collate = charset.CollationBin
x.SetType(ft)
case ast.AggFuncGroupConcat:
ft := types.NewFieldType(mysql.TypeVarString)
ft.Charset = v.defaultCharset
cln, err := charset.GetDefaultCollation(v.defaultCharset)
if err != nil {
v.err = err
}
ft.Collate = cln
x.SetType(ft)
}
}示例3: aggregateFunc
func (v *typeInferrer) aggregateFunc(x *ast.AggregateFuncExpr) {
name := strings.ToLower(x.F)
switch name {
case "count":
ft := types.NewFieldType(mysql.TypeLonglong)
ft.Flen = 21
ft.Charset = charset.CharsetBin
ft.Collate = charset.CollationBin
x.SetType(ft)
case "sum":
ft := types.NewFieldType(mysql.TypeNewDecimal)
ft.Charset = charset.CharsetBin
ft.Collate = charset.CollationBin
x.SetType(ft)
}
}