本文整理匯總了Golang中github.com/cockroachdb/cockroach/sql/sqlwire.Datum.ToUint方法的典型用法代碼示例。如果您正苦於以下問題：Golang Datum.ToUint方法的具體用法？Golang Datum.ToUint怎麽用？Golang Datum.ToUint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/sql/sqlwire.Datum的用法示例。
在下文中一共展示了Datum.ToUint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: prepareBinaryArgs
// Prepare the arguments for a binary operation. The returned arguments will
// have the same type. The typ parameter specifies the allowed types for the
// operation. For example, bit-operations should specify intOp or uintOp to
// indicate that they do not operate on floating point arguments. Float
// operations may still reduce to intOp or uintOp if the operands support it.
func prepareBinaryArgs(typ opType, left, right sqlwire.Datum) (opType, sqlwire.Datum, sqlwire.Datum, error) {
var err error
switch typ {
case intOp, uintOp:
if left.UintVal != nil || right.UintVal != nil {
left, err = left.ToUint()
if err != nil {
return uintOp, null, null, err
}
right, err = right.ToUint()
if err != nil {
return uintOp, null, null, err
}
return uintOp, left, right, nil
}
left, err = left.ToInt()
if err != nil {
return intOp, null, null, err
}
right, err = right.ToInt()
if err != nil {
return intOp, null, null, err
}
return intOp, left, right, nil
case floatOp:
if (left.UintVal != nil && (right.IntVal != nil || right.UintVal != nil)) ||
(right.UintVal != nil && (left.IntVal != nil || left.UintVal != nil)) {
left, err = left.ToUint()
if err != nil {
return uintOp, null, null, err
}
right, err = right.ToUint()
if err != nil {
return uintOp, null, null, err
}
return uintOp, left, right, nil
}
if left.IntVal != nil && right.IntVal != nil {
return intOp, left, right, nil
}
}
left, err = left.ToFloat()
if err != nil {
return floatOp, null, null, err
}
right, err = right.ToFloat()
if err != nil {
return floatOp, null, null, err
}
return floatOp, left, right, nil
}