On Wed, Nov 12, 2008 at 09:46:09AM -0500, Robert Haas wrote: > The || operator is valid only if the dimensions > of the two arrays are equal (in which case it appends them) or if the > dimension of one of the arrays is one less than the other (in which > case, if legal, it treats the array of lesser dimension as a new > element to be added to the other array).
In most other languages these would be distinct operations; one to append or concatenate two arrays of equal dimensionality and another to add a new element on the end. It's very rare that you don't know which one you want to do when you're writing code and hence breaking the two apart both simplifies the implementation of the array handling code and reduces bugs in the calling code. Sam -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
