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java.lang.NoClassDefFoundError: org/postgresql/util/PGobject using jdbc in notebooks

bugSomething isn't workingSomething isn't working

databasesJDBC related issuesJDBC related issues

Status: Open.

#1773 In Kotlin/dataframe;

· Jolanrensen opened on Mar 27, 2026

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1.0.0-Beta5

toDataFrame loses types of properties with type parameter return type

bugSomething isn't workingSomething isn't working

Status: Open.

#1771 In Kotlin/dataframe;

· koperagen opened on Mar 26, 2026

·  

1.0.0-Beta6

Create a benchmark to measure reading/joining multiple files into a single DataFrame

performanceSomething related to how fast the library can handle dataSomething related to how fast the library can handle data

researchThis requires a deeper dive to gather a better understandingThis requires a deeper dive to gather a better understanding

Status: Open.

#1761 In Kotlin/dataframe;

· zaleslaw opened on Mar 19, 2026

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Backlog

Columns Selection DSL nameEquals("")

APIIf it touches our APIIf it touches our API

Compiler pluginAnything related to the DataFrame Compiler PluginAnything related to the DataFrame Compiler Plugin

enhancementNew feature or requestNew feature or request

Status: Open.

#1759 In Kotlin/dataframe;

· Jolanrensen opened on Mar 18, 2026

·  

Backlog

split into(vararg names) should create a null-filled column for remaining names if there's not enough values

bugSomething isn't workingSomething isn't working

good first issueGood issues to pick-up for newcomersGood issues to pick-up for newcomers

Status: Open.

#1758 In Kotlin/dataframe;

· koperagen opened on Mar 18, 2026

·  

1.0.0-Beta6

"group1" / "group2" / "column" column path creation notation

APIIf it touches our APIIf it touches our API

enhancementNew feature or requestNew feature or request

Status: Open.

#1757 In Kotlin/dataframe;

· Jolanrensen opened on Mar 17, 2026

·  

Backlog

Map<String, Any?> to DataRow conversion with nested maps

APIIf it touches our APIIf it touches our API

enhancementNew feature or requestNew feature or request

Status: Open.

#1755 In Kotlin/dataframe;

· Jolanrensen opened on Mar 17, 2026

·  

Backlog

Support inferring column types from DataSchema in readCsv (avoid duplication)

APIIf it touches our APIIf it touches our API

csvCSV / delim related issuesCSV / delim related issues

enhancementNew feature or requestNew feature or request

Status: Open.

#1754 In Kotlin/dataframe;

· Jolanrensen opened on Mar 16, 2026

·  

Backlog

Reach the feature parity between converting columns and adding columns operations

APIIf it touches our APIIf it touches our API

enhancementNew feature or requestNew feature or request

Status: Open.

#1753 In Kotlin/dataframe;

· koperagen opened on Mar 16, 2026

·  

Backlog

Add replace { }.by { } API for multi-column replacement using AddDsl

APIIf it touches our APIIf it touches our API

Compiler pluginAnything related to the DataFrame Compiler PluginAnything related to the DataFrame Compiler Plugin

enhancementNew feature or requestNew feature or request

Status: Open.

#1749 In Kotlin/dataframe;

· Jolanrensen opened on Mar 16, 2026

·  

Backlog

Improve SQLite types handling

databasesJDBC related issuesJDBC related issues

enhancementNew feature or requestNew feature or request

Status: Open.

#1747 In Kotlin/dataframe;

· AndreiKingsley opened on Mar 14, 2026

·  

1.0.0-Beta6

readAllSqlTables doesn't work for MySQL with multiple databases

bugSomething isn't workingSomething isn't working

databasesJDBC related issuesJDBC related issues

Status: Open.

#1746 In Kotlin/dataframe;

· AndreiKingsley opened on Mar 13, 2026

·  

1.0.0-Beta6