Published September 28, 2016 by Paul Lefebvre I’ve ran into PostgreSQL case sensitivity myself before and I’ve seen it come up on the forums, so I thought it might be a good thing to bring up here. Re: Case sensitivity at 2002-06-20 15:13:32 from Andrew Sullivan Re: Case sensitivity at 2002-06-20 15:16:45 from Darren Ferguson Browse pgsql-general by date In this brief post we’ll look at how to set up case insensitive columns with PostgreSQL in the context of a Phoenix application. Unfortunately, full collation support is recent and somewhat incomplete, so you may need to carefully review your … However, quoted identifiers are case sensitive. About PostgreSQL Case Sensitivity. Quoting identifiers and the problem of case sensitivity. Not all DBs are case sensitive and you probably don't want to lowercase names that are overridden in the fluent API or attributes, your overriding the name for a reason. Swag is coming back! Case insensitive searches like this are pretty much the first example given for why you might want to use an expression index. jemfinch, Postgres does sort case sensitive by default, and I haven't found any relevant setting in /etc/postgresql.conf to change that. Adding UNIQUE constraints to tables in Postgres is very easy! Featured on Meta New Feature: Table Support. As of PostgreSQL 9.1, you can attach a COLLATE specification to citext columns or data values. Case Sensitive. If you need case-insensitive behavior most of the time and case-sensitive infrequently, consider storing the data as citext and explicitly casting the column to text when you want case-sensitive comparison. Browse other questions tagged postgresql trigger plpgsql case-sensitive or ask your own question. When you insert record with same sequence of lowercase/uppercase string. The Loop: A community health indicator. The expression in an expression index has to be immutable, but upper() is - it will always give the same output for a given input. It will return only one record no matter the character case you are using . Yeah. When you retrieve a record using psql . While the two formats used above both work correctly for a customer table, there are important differences.. Unquoted identifiers (like the second version) are case insensitive.This means that PostgreSQL will recognize customer, Customer, and CUSTOMER as the same object.. It will accept a string. By default database columns are case sensitive in PostgreSQL. Hi The goal would be to be able to search case insensitive by any key:value combined with some other columns like outlined below, but initially would be... PostgreSQL › PostgreSQL - general PostgreSQL is a case-sensitive database by default, but provides various possibilities for performing case-insensitive operations and working with collations. 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