Edoardo Serra wrote: > SELECT * FROM dummy ORDER BY string ASC; > string > -------- > 100% > 10.1 > (2 rows) > > I would expect the order of the results to be '100%', '10.1'. > Moreover, if I use the following dataset, I get the correct sorting > > SELECT string, ascii(substr(string, 3, 1)) FROM dummy ORDER BY > string ASC; > string | ascii > --------+------- > 10. | 46 > 100 | 48 You left out the most important piece of information -- what collation have you configured? Many common collations ignore special characters (except perhaps as tie-breakers), so your examples sort based on: '100' '101' versus '10' '100' Both examples look right if you are using such a collation. -Kevin
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