Difference between revisions of "SUNScholar/SQL Tips"
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;Find short dates | ;Find short dates | ||
SELECT * FROM metadatavalue,metadatafieldregistry WHERE metadatavalue.metadata_field_id = metadatafieldregistry.metadata_field_id AND element = 'date' AND qualifier = 'accessioned' AND CHAR_LENGTH(text_value) < 10; | SELECT * FROM metadatavalue,metadatafieldregistry WHERE metadatavalue.metadata_field_id = metadatafieldregistry.metadata_field_id AND element = 'date' AND qualifier = 'accessioned' AND CHAR_LENGTH(text_value) < 10; | ||
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| + | ;Empty date | ||
| + | SELECT item_id FROM metadatavalue WHERE metadata_field_id = ( SELECT metadata_field_id FROM metadatafieldregistry WHERE element = 'date' AND qualifier = 'accessioned' ) AND text_value = ''; | ||
Revision as of 15:44, 22 September 2014
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Below are SQL statements to be used for various purposes.
- Extract metadata
SELECT * FROM metadatavalue WHERE metadata_field_id = ( SELECT metadata_field_id FROM metadatafieldregistry WHERE element = 'date' AND qualifier = 'issused' ) SELECT * FROM metadatavalue WHERE metadata_field_id = ( SELECT metadata_field_id FROM metadatafieldregistry WHERE element = 'contributor' AND qualifier = 'advisor' )
- Find short dates
SELECT * FROM metadatavalue,metadatafieldregistry WHERE metadatavalue.metadata_field_id = metadatafieldregistry.metadata_field_id AND element = 'date' AND qualifier = 'accessioned' AND CHAR_LENGTH(text_value) < 10;
- Empty date
SELECT item_id FROM metadatavalue WHERE metadata_field_id = ( SELECT metadata_field_id FROM metadatafieldregistry WHERE element = 'date' AND qualifier = 'accessioned' ) AND text_value = ;
