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Revert "Revert "Fix issues in accurateCastOrNull""

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This reverts commit 71d37d64ab.
This commit is contained in:
Salvatore Mesoraca 2023-09-12 15:34:21 +02:00
parent 2346f30095
commit fa76a88c4f
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GPG Key ID: 0567E50A25403074
4 changed files with 63 additions and 13 deletions
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60
src/Functions/FunctionsConversion.h
View File

@ -89,6 +89,7 @@ namespace ErrorCodes
extern const int ILLEGAL_TYPE_OF_ARGUMENT;
extern const int NOT_IMPLEMENTED;
extern const int CANNOT_INSERT_NULL_IN_ORDINARY_COLUMN;
extern const int CANNOT_PARSE_BOOL;
}
@ -1683,7 +1684,19 @@ struct ConvertImplGenericFromString
const auto & val = col_from_string->getDataAt(i);
ReadBufferFromMemory read_buffer(val.data, val.size);
serialization_from.deserializeWholeText(column_to, read_buffer, format_settings);
try
{
serialization_from.deserializeWholeText(column_to, read_buffer, format_settings);
}
catch (const Exception & e)
{
if (e.code() == ErrorCodes::CANNOT_PARSE_BOOL && typeid_cast<ColumnNullable *>(&column_to))
{
column_to.insertDefault();
continue;
}
throw;
}
if (!read_buffer.eof())
{
@ -4177,15 +4190,21 @@ private:
{
if constexpr (std::is_same_v<ToDataType, DataTypeIPv4>)
{
ret = [cast_ipv4_ipv6_default_on_conversion_error_value, input_format_ipv4_default_on_conversion_error_value, requested_result_is_nullable](
ColumnsWithTypeAndName & arguments, const DataTypePtr & result_type, const ColumnNullable * column_nullable, size_t)
-> ColumnPtr
ret = [cast_ipv4_ipv6_default_on_conversion_error_value,
input_format_ipv4_default_on_conversion_error_value,
requested_result_is_nullable](
ColumnsWithTypeAndName & arguments,
const DataTypePtr & result_type,
const ColumnNullable * column_nullable,
size_t) -> ColumnPtr
{
if (!WhichDataType(result_type).isIPv4())
throw Exception(ErrorCodes::TYPE_MISMATCH, "Wrong result type {}. Expected IPv4", result_type->getName());
const auto * null_map = column_nullable ? &column_nullable->getNullMapData() : nullptr;
if (cast_ipv4_ipv6_default_on_conversion_error_value || input_format_ipv4_default_on_conversion_error_value || requested_result_is_nullable)
if (requested_result_is_nullable)
return convertToIPv4<IPStringToNumExceptionMode::Null>(arguments[0].column, null_map);
else if (cast_ipv4_ipv6_default_on_conversion_error_value || input_format_ipv4_default_on_conversion_error_value)
return convertToIPv4<IPStringToNumExceptionMode::Default>(arguments[0].column, null_map);
else
return convertToIPv4<IPStringToNumExceptionMode::Throw>(arguments[0].column, null_map);
@ -4196,16 +4215,22 @@ private:
if constexpr (std::is_same_v<ToDataType, DataTypeIPv6>)
{
ret = [cast_ipv4_ipv6_default_on_conversion_error_value, input_format_ipv6_default_on_conversion_error_value, requested_result_is_nullable](
ColumnsWithTypeAndName & arguments, const DataTypePtr & result_type, const ColumnNullable * column_nullable, size_t)
-> ColumnPtr
ret = [cast_ipv4_ipv6_default_on_conversion_error_value,
input_format_ipv6_default_on_conversion_error_value,
requested_result_is_nullable](
ColumnsWithTypeAndName & arguments,
const DataTypePtr & result_type,
const ColumnNullable * column_nullable,
size_t) -> ColumnPtr
{
if (!WhichDataType(result_type).isIPv6())
throw Exception(
ErrorCodes::TYPE_MISMATCH, "Wrong result type {}. Expected IPv6", result_type->getName());
const auto * null_map = column_nullable ? &column_nullable->getNullMapData() : nullptr;
if (cast_ipv4_ipv6_default_on_conversion_error_value || input_format_ipv6_default_on_conversion_error_value || requested_result_is_nullable)
if (requested_result_is_nullable)
return convertToIPv6<IPStringToNumExceptionMode::Null>(arguments[0].column, null_map);
else if (cast_ipv4_ipv6_default_on_conversion_error_value || input_format_ipv6_default_on_conversion_error_value)
return convertToIPv6<IPStringToNumExceptionMode::Default>(arguments[0].column, null_map);
else
return convertToIPv6<IPStringToNumExceptionMode::Throw>(arguments[0].column, null_map);
@ -4216,7 +4241,18 @@ private:
if (to_type->getCustomSerialization() && to_type->getCustomName())
{
ret = &ConvertImplGenericFromString<typename FromDataType::ColumnType>::execute;
ret = [requested_result_is_nullable](
ColumnsWithTypeAndName & arguments,
const DataTypePtr & result_type,
const ColumnNullable * column_nullable,
size_t input_rows_count) -> ColumnPtr
{
auto wrapped_result_type = result_type;
if (requested_result_is_nullable)
wrapped_result_type = makeNullable(result_type);
return ConvertImplGenericFromString<typename FromDataType::ColumnType>::execute(
arguments, wrapped_result_type, column_nullable, input_rows_count);
};
return true;
}
}
@ -4231,7 +4267,9 @@ private:
ErrorCodes::TYPE_MISMATCH, "Wrong result type {}. Expected IPv4", result_type->getName());
const auto * null_map = column_nullable ? &column_nullable->getNullMapData() : nullptr;
if (cast_ipv4_ipv6_default_on_conversion_error_value || requested_result_is_nullable)
if (requested_result_is_nullable)
return convertIPv6ToIPv4<IPStringToNumExceptionMode::Null>(arguments[0].column, null_map);
else if (cast_ipv4_ipv6_default_on_conversion_error_value)
return convertIPv6ToIPv4<IPStringToNumExceptionMode::Default>(arguments[0].column, null_map);
else
return convertIPv6ToIPv4<IPStringToNumExceptionMode::Throw>(arguments[0].column, null_map);

5
tests/queries/0_stateless/01556_accurate_cast_or_null.reference
View File

@ -42,3 +42,8 @@
2023-05-30
2149-06-06
1970-01-20
Tests for issue #38585
\N
\N
\N
\N

7
tests/queries/0_stateless/01556_accurate_cast_or_null.sql
View File

@ -49,3 +49,10 @@ SELECT accurateCastOrNull('1xxx', 'Date');
SELECT accurateCastOrNull('2023-05-30', 'Date');
SELECT accurateCastOrNull('2180-01-01', 'Date');
SELECT accurateCastOrNull(19, 'Date');
SELECT 'Tests for issue #38585';
select accurateCastOrNull('test', 'Bool');
select accurateCast('test', 'Nullable(Bool)');
select accurateCastOrNull('test', 'IPv4');
select accurateCastOrNull('test', 'IPv6');

4
tests/queries/0_stateless/02303_cast_nullable_to_custom_types.reference
View File

@ -17,7 +17,7 @@ true
\N
0.0.0.0
\N
0.0.0.0
\N
\N
\N
\N
@ -25,7 +25,7 @@ true
\N
::
\N
::
\N
\N
\N
\N