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MySQL Connector/Node.js 8.0.18 has been released

Dear MySQL users,

MySQL Connector/Node.js is a new Node.js driver for use with the X
DevAPI. This release, v8.0.18, is a maintenance release of the
MySQL Connector/Node.js 8.0 series.

The X DevAPI enables application developers to write code that combines
the strengths of the relational and document models using a modern,
NoSQL-like syntax that does not assume previous experience writing
traditional SQL.

MySQL Connector/Node.js can be downloaded through npm (see for details) or from

To learn more about how to write applications using the X DevAPI, see
For more information about how the X DevAPI is implemented in MySQL
Connector/Node.js, and its usage, see

Please note that the X DevAPI requires at least MySQL Server version
8.0 or higher with the X Plugin enabled. For general documentation
about how to get started using MySQL as a document store, see

Changes in MySQL Connector/Node.js 8.0.18 (2019-10-14, General

Functionality Added or Changed

  • Implemented the X DevAPI cursor model, which includes
    adding methods such as fetchOne(), fetchAll(),
    getColumns(), hasData(), and nextResult(). For additional
    details, see the X DevAPI documentation about Working
    with Result Sets

Previously, handling result set data or metadata required
specific callback functions when calling execute(). With
this new interface, the connector automatically switches
to this new pull-based cursor model if these callback
functions are not provided.

  • Improved Collection.getOne() performance by making the
    underlying lookup expression to only parse once, and
    having subsequent Collection.getOne() calls utilize
    server-side prepared statements.
  • Added support to generate test coverage reports by
    running the likes of npm run coverage; see the bundled for details and requirements. This was
    added to help users contribute patches.
  • Added linter check support to help enforce coding style
    and convention rules for new contributions by running the
    likes of npm run linter; see the bundled
    for details.

Bugs Fixed

  • Added support for assigning Node.js Buffer values to
    expression or SQL query placeholders. (Bug #30163003, Bug 96480)
  • MySQL column binary values (such as BLOB, BINARY, and
    VARBINARY) can now convert to proper Node.js Buffer
    instances. (Bug #30162858, Bug #96478)
  • Inserting a raw Node.js Buffer value into MySQL BLOB
    field resulted in an error as the content_type was
    improperly set; it’s now handled as a raw byte string by
    the X Plugin. (Bug #30158425)
  • The padding characters used for fixed-lengthed columns
    now map to the collation code provided by the column
    metadata; previously it was based on the JavaScript
    native type of the values. (Bug #30030159)

On Behalf of MySQL/ORACLE RE Team
Gipson Pulla