The clerk shall keep a subpoena docket, in which he shall enter the style and number of each case in which a subpoena for a witness is issued, the name of the party for whom the witness is subpoenaed, to whom the subpoena is directed, the date of its issuance, when returnable, whether or not executed. He shall therein keep an account of all witnesses who may be absent when the case in which they have been subpoenaed is called for trial, or who may disqualify themselves from giving testimony by being intoxicated when such case is tried; and he shall not issue any certificate to such witnesses. The docket shall be kept duly indexed. Such docket may be kept on computer as provided in Section 9-7-171.