本文整理匯總了Golang中github.com/cockroachdb/cockroach/pkg/sql/parser.PlaceholderInfo.SetType方法的典型用法代碼示例。如果您正苦於以下問題：Golang PlaceholderInfo.SetType方法的具體用法？Golang PlaceholderInfo.SetType怎麽用？Golang PlaceholderInfo.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/cockroachdb/cockroach/pkg/sql/parser.PlaceholderInfo的用法示例。
在下文中一共展示了PlaceholderInfo.SetType方法的1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: CheckColumnType
// CheckColumnType verifies that a given value is compatible
// with the type requested by the column. If the value is a
// placeholder, the type of the placeholder gets populated.
func CheckColumnType(col ColumnDescriptor, typ parser.Type, pmap *parser.PlaceholderInfo) error {
if typ == parser.TypeNull {
return nil
}
var set parser.Type
switch col.Type.Kind {
case ColumnType_BOOL:
set = parser.TypeBool
case ColumnType_INT:
set = parser.TypeInt
case ColumnType_FLOAT:
set = parser.TypeFloat
case ColumnType_DECIMAL:
set = parser.TypeDecimal
case ColumnType_STRING:
set = parser.TypeString
case ColumnType_BYTES:
set = parser.TypeBytes
case ColumnType_DATE:
set = parser.TypeDate
case ColumnType_TIMESTAMP:
set = parser.TypeTimestamp
case ColumnType_TIMESTAMPTZ:
set = parser.TypeTimestampTZ
case ColumnType_INTERVAL:
set = parser.TypeInterval
default:
return errors.Errorf("unsupported column type: %s", col.Type.Kind)
}
// If the value is a placeholder, then the column check above has
// populated 'set' with a type to assign to it.
if p, pok := typ.(parser.TPlaceholder); pok {
if err := pmap.SetType(p.Name, set); err != nil {
return fmt.Errorf("cannot infer type for placeholder %s from column %q: %s",
p.Name, col.Name, err)
}
} else if !(typ.Equal(set) || (set == parser.TypeBytes && typ == parser.TypeString)) {
// Not a placeholder; check that the value cast has succeeded.
return fmt.Errorf("value type %s doesn't match type %s of column %q",
typ, col.Type.Kind, col.Name)
}
return nil
}