Rotary support and table assembly

A rotary support includes a rotating member, a supporting member, an upper wire, a lower wire and a mounting base, the supporting member is held in the mounting base, the rotating member is inserted into the mounting base and rotatable relative to the supporting member, the upper wire is received in the rotating member and provided with an upper connector, the lower wire is received in the supporting member and provided with a lower connector, the upper connector and the lower connector is provided with a conductive recess and a conductive pin that are engaged one another. The upper wire can be freely rotated relative to the lower wire, thus the wires may not be damaged during the rotation of the table, and the rotation may not restricted by the wires. The connectors of the wires may be connected automatically to simplify the installation of the table.