filter(table\_name=None, view\_name='', expression=None, options={"{"}{"}"})\[source]

Filters data based on the specified expression. The results are stored in a result set with the given input parameter view\_name.

For details see Expressions.

The response message contains the number of points for which the expression evaluated to be true, which is equivalent to the size of the result view.

Parameters

table\_name (str) –

Name of the table to filter, in \[schema\_name.]table\_name format, using standard name resolution rules. This may be the name of a table or a view (when chaining queries).

view\_name (str) –

If provided, then this will be the name of the view containing the results, in \[schema\_name.]view\_name format, using standard name resolution rules and meeting table naming criteria. Must not be an already existing table or view. The default value is ‘’.

expression (str) –

The select expression to filter the specified table. For details see Expressions.

options (dict of str to str) –

Optional parameters. Allowed keys are:

create\_temp\_table – If true, a unique temporary table name will be generated in the sys\_temp schema and used in place of input parameter view\_name. This is always allowed even if the caller does not have permission to create tables. The generated name is returned in qualified\_view\_name. Allowed values are:
- true
- false
The default value is ‘false’.
collection\_name – \[DEPRECATED–please specify the containing schema for the view as part of input parameter view\_name and use GPUdb.create\_schema() to create the schema if non-existent] Name of a schema for the newly created view. If the schema is non-existent, it will be automatically created.
view\_id – View this filtered-view is part of. The default value is ‘’.
ttl – Sets the TTL of the view specified in input parameter view\_name.

The default value is an empty dict ( {"{"}{"}"} ).

Returns

A dict with the following entries–

count (long) –

The number of records that matched the given select expression.

info (dict of str to str) –

Additional information. Allowed keys are:

qualified\_view\_name – The fully qualified name of the view (i.e. including the schema).

The default value is an empty dict ( {"{"}{"}"} ).