Bitstrings are strings of 1’s and 0’s. The bit type data is of variable length. A bitstring value requires 1 byte for each group of 8 bits, plus a fixed amount to store some metadata.

By default bitstrings will not be padded with zeroes. Bitstrings can be very large, having the same size restrictions as BLOBs.

-- create a bitstring 
SELECT '101010'::BIT

Functions

See Bitstring Functions.