Ben wrote:
Just the number of bits, not which ones. Basically, the hamming distance.
I see. Could you pre-compute the bit counts for the vectors in the table? You could count the bits in the search vector as Martijn suggested, and then do a lookup based on the count. -- todd ---------------------------(end of broadcast)--------------------------- TIP 9: In versions below 8.0, the planner will ignore your desire to choose an index scan if your joining column's datatypes do not match