Tex. Penal Code § 37.06: INCONSISTENT STATEMENTS.

An information or indictment for perjury under Section 37.02 or aggravated perjury under Section 37.03 that alleges that the declarant has made statements under oath, both of which cannot be true, need not allege which statement is false. At the trial the prosecution need not prove which statement is false.

Acts 1973, 63rd Leg., p. 883, ch. 399, Sec. 1, eff. Jan. 1, 1974. Amended by Acts 1993, 73rd Leg., ch. 900, Sec. 1.01, eff. Sept. 1, 1994.