回答編集履歴
1
SQL追記
answer
CHANGED
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@@ -8,4 +8,40 @@
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8
8
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+-------------------------------+
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9
9
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1 row in set (0.00 sec)
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10
10
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11
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-
とかダメですか？
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11
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とかダメですか？
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12
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+
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13
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```SQL
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14
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CREATE TABLE `str_to_date` (
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15
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`id` int(11) NOT NULL AUTO_INCREMENT,
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16
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`date_str` char(6) DEFAULT NULL,
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PRIMARY KEY (`id`)
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18
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);
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```
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20
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21
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```SQL
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22
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SELECT * FROM test.str_to_date;
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23
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```
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24
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```
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mysql> select * from test.str_to_date;
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27
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+----+----------+
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28
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| id | date_str |
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29
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+----+----------+
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30
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| 1 | 201810 |
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31
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| 2 | 201809 |
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32
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| 3 | 201812 |
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33
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| 4 | 201712 |
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34
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| 5 | 201908 |
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35
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+----+----------+
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```
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37
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```
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39
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mysql> SELECT * FROM test.str_to_date where str_to_date(date_str, '%Y%m') > str_to_date('201809', '%Y%m');
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40
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+----+----------+
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41
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| id | date_str |
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42
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+----+----------+
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43
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| 1 | 201810 |
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44
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| 3 | 201812 |
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45
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| 5 | 201908 |
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46
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+----+----------+
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47
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```
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