Sorting SQL Results Case Insensitively with the Order By Statement
When sorting data with SQL's Order By statement, case sensitivity can interfere with the desired ordering. For example, if a SQLite table contains values such as "A", "a", "B", and "T", the default sorting behavior will result in:
A B C T a b c g
To ensure case-insensitive sorting, the COLLATE keyword can be used in conjunction with the Order By statement. By specifying COLLATE NOCASE, the database will disregard case differences when comparing values.
SELECT * FROM NOTES ORDER BY title COLLATE NOCASE
This will return a sorted result set in which both uppercase and lowercase characters have equal weighting:
A a b B C c g T
Additionally, the ASC or DESC keywords can be used to control the sort order (ascending or descending) by adding them after COLLATE NOCASE:
ORDER BY TITLE COLLATE NOCASE ASC -- Sort ascending (A-Z, a-z)
ORDER BY TITLE COLLATE NOCASE DESC -- Sort descending (Z-A, z-a)
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