[Koha-devel] Cleaning up...

[Mark Tompsett]

Greetings,

mysql> SELECT table_name, table_rows, round(((data_length + index_length) / 1024 / 1024),2) "Size in MB" FROM information_schema.TABLES where table_schema = "koha_library" and ((data_length+index_length)/1024/1024)>10 order by (data_length+index_length);
+-------------------------+------------+------------+
| table_name              | table_rows | Size in MB |
+-------------------------+------------+------------+
| marc_subfield_structure |      48064 |      11.73 |
| statistics              |      26298 |      11.98 |
| biblio                  |      96620 |      14.03 |
| deleteditems            |      27767 |      14.48 |
| import_biblios          |     136336 |      36.33 |
| deletedbiblioitems      |      19509 |      61.45 |
| items                   |     122738 |      67.25 |
| nozebra                 |     264699 |      76.66 |
| import_items            |     147630 |     130.19 |
| biblioitems             |     103188 |     343.14 |
| import_records          |     113028 |     659.55 |
| biblioimages            |       1176 |     919.47 |
+-------------------------+------------+------------+
12 rows in set (0.33 sec)

So, I was looking to clean up the database a bit, so I figured I’d see what was taking up the most space. The import_{something} series of tables looked like promising clean up candidates. After all, who doesn’t want to free up 750MB or more when running in a 40GB VM?

This led me to this pretty schema page: http://schema.koha-community.org/tables/import_records.html

QUESTION: Would there be any problems if I deleted records associated with import_batch_id’s prior to a given date in these related import_{something} tables?

Grace, Peace, Mercy, and Love,
Mark Tompsett
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