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Posted to jira@arrow.apache.org by "Neal Richardson (Jira)" <ji...@apache.org> on 2022/09/04 19:36:00 UTC
[jira] [Updated] (ARROW-17601) [C++] Error when creating Expression on Decimal128 types: precision out of range
[ https://issues.apache.org/jira/browse/ARROW-17601?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Neal Richardson updated ARROW-17601:
------------------------------------
Description:
Reproducer in R:
{code}
library(arrow)
library(dplyr)
tab <- Table$create(col1 = 1:4, col2 = 5:8)
tab <- tab$cast(schema(col1 = decimal128(33, 4), col2 = decimal128(15, 2)))
tab %>% mutate(col1 * col2)
# Error: Invalid: Decimal precision out of range [1, 38]: 49
# /Users/me/arrow/cpp/src/arrow/compute/kernels/scalar_arithmetic.cc:1078 DecimalType::Make(left_type.id(), precision, scale)
# /Users/me/arrow/cpp/src/arrow/compute/exec/expression.cc:413 call.kernel->signature->out_type().Resolve(&kernel_context, types)
{code}
We don't have this problem integers and floats, we upcast to a wider size in some compute functions like multiplication. Should this go up to Decimal256? Or is there a better way to determine the size required?
was:
Reproducer in R:
{code}
library(arrow)
library(dplyr)
tab <- Table$create(col1 = 1:4, col2 = 5:8)
tab <- tab$cast(schema(col1 = decimal128(33, 4), col2 = decimal128(15, 2)))
tab %>% mutate(col1 * col2)
# Error: Invalid: Decimal precision out of range [1, 38]: 49
# /Users/me/arrow/cpp/src/arrow/compute/kernels/scalar_arithmetic.cc:1078 DecimalType::Make(left_type.id(), precision, scale)
# /Users/me/arrow/cpp/src/arrow/compute/exec/expression.cc:413 call.kernel->signature->out_type().Resolve(&kernel_context, types)
{code}
With integers and floats, we upcast to a wider size in some compute functions like multiplication. Should this go up to Decimal256? Or is there a better way to determine the size required?
> [C++] Error when creating Expression on Decimal128 types: precision out of range
> --------------------------------------------------------------------------------
>
> Key: ARROW-17601
> URL: https://issues.apache.org/jira/browse/ARROW-17601
> Project: Apache Arrow
> Issue Type: Bug
> Components: C++
> Reporter: Neal Richardson
> Priority: Major
>
> Reproducer in R:
> {code}
> library(arrow)
> library(dplyr)
> tab <- Table$create(col1 = 1:4, col2 = 5:8)
> tab <- tab$cast(schema(col1 = decimal128(33, 4), col2 = decimal128(15, 2)))
> tab %>% mutate(col1 * col2)
> # Error: Invalid: Decimal precision out of range [1, 38]: 49
> # /Users/me/arrow/cpp/src/arrow/compute/kernels/scalar_arithmetic.cc:1078 DecimalType::Make(left_type.id(), precision, scale)
> # /Users/me/arrow/cpp/src/arrow/compute/exec/expression.cc:413 call.kernel->signature->out_type().Resolve(&kernel_context, types)
> {code}
> We don't have this problem integers and floats, we upcast to a wider size in some compute functions like multiplication. Should this go up to Decimal256? Or is there a better way to determine the size required?
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