回答編集履歴
1
SQL追記
test
CHANGED
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@@ -19,3 +19,75 @@
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とかダメですか？
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```SQL
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CREATE TABLE `str_to_date` (
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`id` int(11) NOT NULL AUTO_INCREMENT,
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`date_str` char(6) DEFAULT NULL,
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PRIMARY KEY (`id`)
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);
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```
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```SQL
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SELECT * FROM test.str_to_date;
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```
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```
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mysql> select * from test.str_to_date;
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+----+----------+
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| id | date_str |
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+----+----------+
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| 1 | 201810 |
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| 2 | 201809 |
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| 3 | 201812 |
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| 4 | 201712 |
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| 5 | 201908 |
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+----+----------+
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```
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```
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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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+----+----------+
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| id | date_str |
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+----+----------+
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| 1 | 201810 |
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| 3 | 201812 |
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| 5 | 201908 |
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+----+----------+
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```
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