DolphinDB Release Notes

Release Date : 2019.02.18

Version : 0.9

DolphinDB Server

Linux binary | Windows binary

New Features

• Support dynamically adding new columns in distributed tables and streaming tables.
• A new type of in-memory table that supports concurrent read and write: mvccTable.
• Left join now includes left join (lj) and left semi join (lsj).
• New keyword "csort" in SQL for in-group sorting of the result of "context by" clauses.
• New function "isSorted" to judge if a vector has been sorted.
• New configuration parameter "webLoginRequired".
• New function "getSessionMemoryStat" for memory usage monitoring.

Improvements

• Optimize the performance of "select top ..." statements.
• Optimize the performance of functions "find", "asof" and "binarySearch" on subarrays.

DolphinDB GUI

binary

• Support adjusting font size.
• Support adjusting tab size.

DolphinDB APIs

JDBC source

• Implement method "setQueryTimeout" of java.sql.Statement, which prevents the system from waiting too long for running queries.

C# API source

• Add "initialScript" mode to automatically execute the initialization script when reconnecting to DolphinDB server.

DolphinDB Plugins

• Updated plugin header files

  DolphinDBPlugin

• Provide MySql plugin to import data or query results from MySql to DolphinDB.

  MySql Plugin binary | source