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This icon performs an ODB/SQL query on an  an ODB (Observational DataBase) database (format ODB-1) or file (format ODB-2). The result is always an ODB file (in ODB-2 format).

Info

From Macro/Python the icon can be called as odb_filter().


Tip

A tutorial about using ODB in Metview con can be found here.

What is ODB?

ODB is a database developed at ECMWF to store and retrieve large volumes of meteorological observational and feedback data efficiently for use within the IFS.

Currently, ODB comes in two flavours:

  • ODB-1 (the original hierarchical table format capable of running in a parallel environment within IFS)

  • ODB-2 (a new flat format with a modern API used for archiving in MARS).



The ODB Filter Editor

ODB Filename

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Specifies the input ODB as an icon. If both an icon (in ODB Icon) and a filename (in ODB Filename) are specified the icon takes preference.

ODB Query

Specifies the ODB/SQL query to run.

ODB NB Rows

Specifies the maximum number of rows in the result. If -1 is given here the number of rows is not limited in the output. The default value is -1.

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