Any instances where multiple players within same team

Identify any instances where multiple players within the same team have the same jersey number. Return the team name, jersey number, and the count of players sharing that number.

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Database schema

CREATE TABLE "public"."teams" (
    "team_id" varchar(10) NOT NULL,
    "name" varchar(80) NOT NULL,
    "city" varchar(80) NOT NULL,
    "playground" varchar(80) NOT NULL,
    "jersey_home_color" varchar(80),
    "jersey_away_color" varchar(80),
    PRIMARY KEY ("team_id")
);

CREATE TABLE "public"."managers" (
    "mgr_id" varchar(10) NOT NULL,
    "name" varchar(80) NOT NULL,
    "dob" date NOT NULL,
    "team_id" varchar(10),
    "since" date,
    PRIMARY KEY ("mgr_id")
);

CREATE TABLE "public"."matches" (
    "match_num" varchar(10) NOT NULL,
    "match_date" date NOT NULL,
    "host_team_id" varchar(10) NOT NULL,
    "guest_team_id" varchar(10) NOT NULL,
    "host_team_score" int4 NOT NULL,
    "guest_team_score" int4 NOT NULL,
    PRIMARY KEY ("match_num")
);

CREATE TABLE "public"."match_referees" (
    "match_num" varchar(10) NOT NULL,
    "referee" varchar(15),
    "assistant_referee_1" varchar(15),
    "assistant_referee_2" varchar(15),
    "fourth_referee" varchar(15),
    PRIMARY KEY ("match_num")
);

CREATE TABLE "public"."referees" (
    "referee_id" varchar(10) NOT NULL,
    "name" varchar(80) NOT NULL,
    "dob" date NOT NULL,
    PRIMARY KEY ("referee_id")
);

CREATE TABLE "public"."players" (
    "player_id" varchar(10) NOT NULL,
    "name" varchar(80) NOT NULL,
    "dob" date NOT NULL,
    "jersey_no" int4 NOT NULL,
    "team_id" varchar(10) NOT NULL,
    PRIMARY KEY ("player_id")
);