関連ワード:  sql query for count of distinct values    sql select count of distinct values    sql select count of distinct values in column    sql query to get count of distinct values in a column    sql select number of distinct values    sql select count of different values    sql server select count of distinct values    t sql select count of distinct values    oracle sql select count of distinct values    sql select number of unique values  
結果 : sql query for count of distinct values