mybatis自分用メモ

■公式ドキュメント
https://mybatis.org/mybatis-3/ja/sqlmap-xml.html

■BaseTypeHandler.java
https://github.com/mybatis/mybatis-3/blob/master/src/main/java/org/apache/ibatis/type/BaseTypeHandler.java

■DoubleTypeHandler.java
https://github.com/mybatis/mybatis-3/blob/master/src/main/java/org/apache/ibatis/type/DoubleTypeHandler.java

■nullとDouble
https://stackoverflow.com/questions/54858285/how-to-read-null-value-for-a-number-column-from-oracle-using-mybatis

■
■how-to-insert-null-manually-in-mybatis-insert-query
https://stackoverflow.com/questions/19828950/how-to-insert-null-manually-in-mybatis-insert-query

■
https://stackoverflow.com/questions/5388778/insert-default-value-when-null-is-inserted

mybatisは内部でjdbcを使っている