Couple of months ago I wrote how to do human sort in Pg by using arrays, and splitting string.
This works, but Matt mentioned in comments that it could be done with ICU collations.
So I looked into it …
Continue reading Human/version sort in PostgreSQL – revisited
Every so often someone asks why sorting behaves irrational. Like here:
$ SELECT string FROM test ORDER BY string; string ---------- dean deer de luca depesz de vil dyslexia (6 ROWS)
Why aren't “de luca" and “de vil" together?
Continue reading Why is “depesz" between “de luca" and “de vil"?
On 8th of February, Peter Eisentraut committed patch:
Per-column collation support This adds collation support for columns and domains, a COLLATE clause to override it per expression, and B-tree index support. Peter Eisentraut reviewed by Pavel Stehule, Itagaki Takahiro, Robert Haas, Noah Misch Branch ------ master
Continue reading Waiting for 9.1 – Per-column collation support