JDBC DAO SQL 不区分大小写的查询

Question

IDE：IntelliJ 开发工具包：JAVA 11.0 SQL 客户端：postgreSQL

我的 DAO 包含以下 @Override，我运行遇到了一个不区分大小写的问题。尽我所能，我无法弄清楚如何使 postgreSQL 搜索不区分大小写。我的测试条件也在最下面。有什么建议吗？

    @Override
    public List<Employee> searchEmployeesByName(String firstNameSearch, String lastNameSearch) {
        List<Employee> employees = new ArrayList<>();
        String sql = "SELECT employee_id, department_id, first_name, last_name, birth_date, hire_date " +
                "FROM employee " +
                "WHERE first_name LIKE ? AND last_name LIKE ?;";
        firstNameSearch = "%" + firstNameSearch + "%";
        lastNameSearch = "%" + lastNameSearch + "%";

        SqlRowSet results = jdbcTemplate.queryForRowSet(sql, firstNameSearch, lastNameSearch);
        while (results.next()) {
            employees.add(mapRowToEmployee(results));
        }
        return employees;
    }


    @Test
    public void employee_added_to_project_is_in_list_of_employees_for_project() {
        sut.addEmployeeToProject(1L, 3L);
        List<Employee> employees = sut.getEmployeesByProjectId(1L);
        Assert.assertEquals("addEmployeeToProject didn't increase number of employees assigned to project",
            2, employees.size());
        assertEmployeesMatch("addEmployeeToProject assigned wrong employee to project", EMPLOYEE_3, employees.get(1));
    }

Answer 1

如果您希望与 PostgreSQL 进行不区分大小写的匹配，请使用 ILIKE instead of LIKE:

The key word ILIKE can be used instead of LIKE to make the match case-insensitive according to the active locale. This is not in the SQL standard but is a PostgreSQL extension.

JDBC DAO SQL 不区分大小写的查询

JDBC DAO SQL case-insensitive query

postgresql

case-insensitive

spring-framework-beans