split_database

sunpy.database.split_database(source_database, destination_database, *query_string)[source] [edit on github]

Queries the source database with the query string, and moves the matched entries to the destination database. When this function is called, the undo feature is disabled for both databases.

Parameters:
  • source_database (Database) – A SunPy Database object. This is the database on which the queries will be made.
  • destination_database (Database) – A SunPy Database object. This is the database to which the matched entries will be moved.
  • query_string (list) – A variable number of attributes that are chained together via the boolean AND operator. The | operator may be used between attributes to express the boolean OR operator.

Examples

The function call in the following example moves those entries from database1 to database2 which have Instrument = ‘AIA’ or ‘ERNE’.

>>> from sunpy.database import Database, split_database
>>> from sunpy.database.tables import display_entries
>>> from sunpy.net import vso
>>> database1 = Database('sqlite:///:memory:')
>>> database2 = Database('sqlite:///:memory:')
>>> client = vso.VSOClient()  
>>> qr = client.search(vso.attrs.Time('2011-05-08', '2011-05-08 00:00:05'))  
>>> database1.add_from_vso_query_result(qr)  
>>> database1, database2 = split_database(database1, database2,
...            vso.attrs.Instrument('AIA') | vso.attrs.Instrument('ERNE'))