InfluxDB fdw 0.3 released

Posted on 2021-01-19 by Toshiba
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We have just released version 0.3 of the Foreign Data Wrapper for InfluxDB.

This release can work with PostgreSQL 9.6, 10, 11, 12 and 13.

This release supports following features :

  • Support PostgreSQL 13
  • Support new "tags" option for specifing tag keys
  • Fix some bugs
    • Fix influxdb not support compare time column with OR
    • Fix influxdb not support IN/NOT IN
    • Fix invalid input syntax for type integer
    • Fix error GROUP BY only works with time and tag dimensions
    • Fix time argument and having clause
    • Fix influxdb does not support DISTINCT within aggregate except count()
    • Fix error parsing with LIKE operator
    • Fix InfluxDB return 0 rows when related tag key operation
    • Fix build on macOS
    • Fix WHERE string comparision other than = and != operators
    • Fix mix usage of aggregate function and arithmetic

Limitations :

  • INSERT, UPDATE and DELETE are not supported.
  • Result sets have different number of rows depending on specified target list.
  • Complex boolean conditions not allowed in InfluxDB like WHERE b = (a = true) may cause error.
  • Conditions including NULL may cause error.

This is developed by Toshiba Software Engineering & Technology Center. Please see the repository for details.

Source repository :