I’ve ran into PostgreSQL case sensitivity myself before and I’ve seen itcome up on the forums, so I thought it might be a good thing to bring up here. Sometimes you hear that PostgreSQL is case-insensitive, but it isn’t really. What it actually does is convert your SQL to lowerca...
As for case sensitivity for table and column names and the like, unquoted names are case insensitive by default, as you mention. You should be able to quote them in your script manually if you really need a specific case. E.g., you're trying to match your identifier names in your code...
Additionally, you can set thesearch_pathas a switch to make the data case insensitive if you want only part of your application to behave like case insensitive without making any changes to the application. Drawbacks You need to add thesearch_path(with theutilschema beforepg_catalog) to the ...
We can also use the LOWER() function to write the case-insensitive queries. The LOWER() function takes in a string as a parameter and converts its case to its lowercase string. To learn about this function in detail you can see thePostgreSQL LOWER() Functionarticle. However, we will see...
regular expression matching is not case insensitive, and you have to use the case insensitive operator ~* explicitly Using case-insensitive ICU collations If you are using PostgreSQL v12 or better, and PostgreSQL was configured --with-icu, you can define a case-insensitive collation like this: ...
citext | 1.6 | | data typeforcase-insensitivecharacterstrings cube | 1.5 | | data typeformultidimensional cubes dblink | 1.2 | |connecttoother PostgreSQL databasesfromwithin adatabasedict_int | 1.0 | |textsearch dictionary templateforintegers ...
Thecitextextension allows you to define insensitive-case columns, so you can avoid things like thelowerfunction. In fact, this extension calls thelowerfunction automatically so that you don’t have to do it manually. If you’re using Ubuntu, you have to install thepostgresql-contribpackage. ...
bin(将字符串中的每一个字符用二进制数据存储，区分大小写。) 或者 utf8_general_cs(cs为case ...
pgstattuple | 1.5 | | show tuple-level statistics cube | 1.4 | | data type for multidimensional cubes citext | 1.6 | | data type for case-insensitive character strings pageinspect | 1.8 | | inspect the contents of database pages at a low level dblink | 1.2 | | conn...
* and we honor filesystem case insensitivity if known */ static int dir_strcmp(const char *s1, const char *s2) { while (*s1 && *s2) { if ( #ifndef WIN32 *s1 != *s2 #else /* On windows, paths are case-insensitive */ pg_tolower((unsigned char) *s1) != pg_tolower((unsign...