http://dev.clojure.org/jira This file is an XML representation of an issue en-us 4.4 649 25-07-2011 http://dev.clojure.org/jira/browse/JDBC-41 java.jdbc <p>I'd like to get the ordered record set within with-query-results<br/> (or the way to restore the original order).<br/> Is this possible with clojure/java.jdbc?</p> JDBC-41

How to preserve order of rows?

Enhancement Minor Resolved Completed Sean Corfield Konstantin Mon, 24 Dec 2012 03:32:47 -0600 Sun, 7 Apr 2013 03:38:00 -0500 Sun, 7 Apr 2013 03:38:00 -0500 0 0 <p>I assume you mean the order of columns within the rows, not the actual order of rows within the result set?</p> <p>I'm looking at providing an alternative result set format using arrays instead of maps which will preserve column orders.</p> <p>Since maps are unordered by default in Clojure, I'd be suspicious of code that relies on ordering of keys (so I'm reducing this to 'minor').</p> <p>You are right, I mean the order of columns, not the rows.</p> <p>I understand, that maps are unordered. There are few reasons when<br/> the order is matters. The one of them is my task - simple<br/> SQL database client.</p> <p>Probably it would be better to do this possibility optional,<br/> since it is not used very often?</p> <p>An optional keyword argument sounds like a reasonable compromise. I'm already looking at keyword arguments on resultset-seq for returning arrays instead of maps and returning an order-preserving map should be as simple as replacing (zipmap keys (row-values)) with (apply array-map (interleave keys (row-values)))</p> <p>Fixed in 0.3.0-SNAPSHOT by allowing :as-arrays argument to query and result-set-seq functions, which returns result as vector of column names, followed by vectors for each row.</p> Global Rank