The game, which took place on the field of the Reale Arena stadium in San Sebastian, ended with a score of 1:0 in favor of the Xavi team.
The ball was scored by Pierre-Emerick Aubameyang (11th minute).
Barcelona are second in the La Liga table with 63 points.
Real Sociedad (55) is in sixth place.
Leading the championship "Real" (78).
Earlier it was reported that Jesus Corona's brace brought Sevilla a victory over Levant in the La Liga match.