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10 lines
737 B
SQL
10 lines
737 B
SQL
mysql> explain select language_id from sakila.film group by language_id;
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+----+-------------+-------+-------+---------------+--------------------+---------+------+------+--------------------------+
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| id | select_type | table | type | possible_keys | key | key_len | ref | rows | Extra |
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+----+-------------+-------+-------+---------------+--------------------+---------+------+------+--------------------------+
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| 1 | SIMPLE | film | range | NULL | idx_fk_language_id | 1 | NULL | 2 | Using index for group-by |
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+----+-------------+-------+-------+---------------+--------------------+---------+------+------+--------------------------+
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1 row in set (0.00 sec)
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mysql> notee
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