Mybatis中模糊查询的各种写法

http://blog.csdn.net/luqin1988/article/details/7865643

1. sql中字符串拼接

SELECT * FROM tableName WHERE name LIKE CONCAT(CONCAT(‘%’, #{text}), ‘%’);

使用 {…} 代替 #{…}
SELECT * FROM tableName WHERE name LIKE ‘%{text}%’;

程序中拼接

Java

// String searchText = “%” + text + “%”;

String searchText = new StringBuilder(“%”).append(text).append(“%”).toString();

parameterMap.put(“text”, searchText);

SqlMap.xml

SELECT * FROM tableName WHERE name LIKE #{text};

大小写匹配查询

SELECT * FROM TABLENAME WHERE UPPER(SUBSYSTEM) LIKE ‘%’ || UPPER(‘jz’) || ‘%’ 或者

SELECT * FROM TABLENAME WHERE LOWER(SUBSYSTEM) LIKE ‘%’ || LOWER(‘jz’) || ‘%’