There is provided a sink including: a washing case that is divided into a plurality of spaces including a dishwashing space; a table on which the washing case is mounted; a dish rack that is detachably provided the dishwashing space and having a washing nozzle rotatably installed on a bottom; a sump assembly that is mounted on a bottom surface of the dishwashing space and stores washing water to be supplied to the washing nozzle in a state where the dish rack is mounted on the dishwashing space; and a washing cover that slides horizontally above the dishwashing space to be inserted into the table or to cover an opened upper surface of the dishwashing space, in which the washing cover includes an operation unit for inputting operating command for dishwashing and a display unit for displaying various information.