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PostgreSQL specific lookupsLink to this heading#

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Trigram similarityLink to this heading#

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The trigram_similar lookup allows you to perform trigram lookups,\nmeasuring the number of trigrams (three consecutive characters) shared, using a\ndedicated PostgreSQL extension. A trigram lookup is given an expression and\nreturns results that have a similarity measurement greater than the current\nsimilarity threshold.

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To use it, add 'django.contrib.postgres' in your INSTALLED_APPS\nand activate the pg_trgm extension on\nPostgreSQL. You can install the extension using the\nTrigramExtension migration\noperation.

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The trigram_similar lookup can be used on\nCharField and TextField:

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Code
>>> City.objects.filter(name__trigram_similar="Middlesborough")\n['<City: Middlesbrough>']\n
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UnaccentLink to this heading#

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The unaccent lookup allows you to perform accent-insensitive lookups using\na dedicated PostgreSQL extension.

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This lookup is implemented using Transform, so it\ncan be chained with other lookup functions. To use it, you need to add\n'django.contrib.postgres' in your INSTALLED_APPS and activate\nthe unaccent extension on PostgreSQL. The\nUnaccentExtension migration\noperation is available if you want to perform this activation using migrations).

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The unaccent lookup can be used on\nCharField and TextField:

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Code
>>> City.objects.filter(name__unaccent="México")\n['<City: Mexico>']\n\n>>> User.objects.filter(first_name__unaccent__startswith="Jerem")\n['<User: Jeremy>', '<User: Jérémy>', '<User: Jérémie>', '<User: Jeremie>']\n
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