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sqlite-utils memory --analyze, closes #320

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Simon Willison 2021-08-22 08:44:25 -07:00
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docs/cli.rst
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@ -328,10 +328,10 @@ The CSV data that was piped into the script is available in the ``stdin`` table,
.. _cli_memory_schema_dump_save:
\-\-schema, \-\-dump and \-\-save
---------------------------------
\-\-schema, \-\-analyze, \-\-dump and \-\-save
----------------------------------------------
To see the schema that will be created for a file or multiple files, use ``--schema``::
To see the in-memory datbase schema that would be used for a file or for multiple files, use ``--schema``::
% sqlite-utils memory dogs.csv --schema
CREATE TABLE [dogs] (
@ -342,6 +342,33 @@ To see the schema that will be created for a file or multiple files, use ``--sch
CREATE VIEW t1 AS select * from [dogs];
CREATE VIEW t AS select * from [dogs];
You can run the equivalent of the :ref:`analyze-tables <cli_analyze_tables>` command using ``--analyze``::
% sqlite-utils memory dogs.csv --analyze
dogs.id: (1/3)
Total rows: 2
Null rows: 0
Blank rows: 0
Distinct values: 2
dogs.name: (2/3)
Total rows: 2
Null rows: 0
Blank rows: 0
Distinct values: 2
dogs.age: (3/3)
Total rows: 2
Null rows: 0
Blank rows: 0
Distinct values: 2
You can output SQL that will both create the tables and insert the full data used to populate the in-memory database using ``--dump``::
% sqlite-utils memory dogs.csv --dump