[ https://issues.apache.org/jira/browse/SPARK-48157?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Wenchen Fan reassigned SPARK-48157: ----------------------------------- Assignee: Uroš Bojanić > CSV expressions (all collations) > -------------------------------- > > Key: SPARK-48157 > URL: https://issues.apache.org/jira/browse/SPARK-48157 > Project: Spark > Issue Type: Sub-task > Components: SQL > Affects Versions: 4.0.0 > Reporter: Uroš Bojanić > Assignee: Uroš Bojanić > Priority: Major > Labels: pull-request-available > > Enable collation support for *CSV* built-in string functions in Spark > ({*}CsvToStructs{*}, {*}SchemaOfCsv{*}, {*}StructsToCsv{*}). First confirm > what is the expected behaviour for these functions when given collated > strings, and then move on to implementation and testing. You will find these > expressions in the *csvExpressions.scala* file, and they should mostly be > pass-through functions. Implement the corresponding E2E SQL tests > (CollationSQLExpressionsSuite) to reflect how this function should be used > with collation in SparkSQL, and feel free to use your chosen Spark SQL Editor > to experiment with the existing functions to learn more about how they work. > In addition, look into the possible use-cases and implementation of similar > functions within other other open-source DBMS, such as > [PostgreSQL|https://www.postgresql.org/docs/]. > > The goal for this Jira ticket is to implement the *CSV* expressions so that > they support all collation types currently supported in Spark. To understand > what changes were introduced in order to enable full collation support for > other existing functions in Spark, take a look at the Spark PRs and Jira > tickets for completed tasks in this parent (for example: Ascii, Chr, Base64, > UnBase64, Decode, StringDecode, Encode, ToBinary, FormatNumber, Sentences). > > Read more about ICU [Collation Concepts|http://example.com/] and > [Collator|http://example.com/] class. Also, refer to the Unicode Technical > Standard for string > [collation|https://www.unicode.org/reports/tr35/tr35-collation.html#Collation_Type_Fallback]. -- This message was sent by Atlassian Jira (v8.20.10#820010) --------------------------------------------------------------------- To unsubscribe, e-mail: issues-unsubscr...@spark.apache.org For additional commands, e-mail: issues-h...@spark.apache.org