関連ワード:  sql server get char from string    sql server get first char from string    sql server get last 3 characters from string    sql server get first 3 characters from string    sql server get last 2 characters from string    sql server get only alphanumeric characters from string    sql server find char in string    sql server find character in string from right    sql server find character from end of string    sql server find character in string from left