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https://issues.apache.org/jira/browse/DERBY-2599?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12500417
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Mamta A. Satoor commented on DERBY-2599:
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The discussion in
http://www.nabble.com/more-on-system-schema-vs.-user-schema-and-character-constants.-p10885286.html
is exposing a bug in my approach of what schema should be picked up for
collation when a character string type in Derby is supposed to pick up it's
collation from the schema it is getting compiled in. I was picking up the
collation of connection's current schema but it should really be the collation
of the compilation schema. I will start looking into it.
> Set correct collation type and derivation on DataTypeDescriptor(DTD).
> ---------------------------------------------------------------------
>
> Key: DERBY-2599
> URL: https://issues.apache.org/jira/browse/DERBY-2599
> Project: Derby
> Issue Type: New Feature
> Components: SQL
> Affects Versions: 10.3.0.0
> Reporter: Mamta A. Satoor
> Assignee: Mamta A. Satoor
> Attachments: DERBY2599_collationType_default_UCS_BASIC_v1_diff.txt,
> DERBY2599_collationType_default_UCS_BASIC_v1_stat.txt,
> DERBY2599_correct_collation_for_cast_v1_diff.txt,
> DERBY2599_correct_collation_for_cast_v1_stat.txt,
> DERBY2599_getNull_should_set_collation_info_v1_diff.txt,
> DERBY2599_getNull_should_set_collation_info_v1_stat.txt,
> DERBY2599_IntermediatePatch_v1_diff.txt,
> DERBY2599_IntermediatePatch_v1_stat.txt,
> DERBY2599_Set_collation_for_aggregates_v1_diff.txt,
> DERBY2599_Set_collation_for_aggregates_v1_stat.txt,
> DERBY2599_Set_collation_for_aggregates_v1_stat.txt,
> DERBY2599_Set_collation_for_Max_Min_v1_diff.txt,
> DERBY2599_set_correct_collation_for_params_and_string_functions_v1_diff.txt,
> DERBY2599_set_correct_collation_for_params_and_string_functions_v1_stat.txt
>
>
> DTD has TypeDescriptorImpl in it which has 2 new fields, namely,
> collationType and collationDerivation. These 2 fields are available for all
> different types of DTDs but only apply to character types. The other
> datatypes should ignore these 2 fields.
> This Jira is a placeholder for loading the correct values into collationType
> and collationDerivation.
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