and和or的使用
案例1：where A=? and B=?
//SELECT id,name,age,sex FROM student WHERE (name = ? AND age = ?)List<Student> list = studentService.lambdaQuery().eq(Student::getName, "1").eq(Student::getAge, 1).list();
案例2：where A=? or B=?
//SELECT id,name,age,sex FROM student WHERE (name = ? OR age = ?)List<Student> list = studentService.lambdaQuery().eq(Student::getName, "1").or().eq(Student::getAge, 12).list();
案例3：where A=? or（C=? and D=?)
//SELECT id,name,age,sex FROM student WHERE (name = ? OR (name = ? AND age = ?))List<Student> list =studentService.lambdaQuery().eq(Student::getName, "1").or(wp -> wp.eq(Student::getName, "1").eq(Student::getAge, 12)).list();
案例4：where (A=?andB=?)or(C=?andD=?)
// SELECT id,name,age,sex FROM student WHERE ((name = ? AND age = ?) OR (name = ? AND age = ?))List<Student> list =studentService.lambdaQuery().and(wp -> wp.eq(Student::getName, "1").eq(Student::getAge, 12)).or(wp -> wp.eq(Student::getName, "1").eq(Student::getAge, 12)).list();
案例5：whert A =? or (B=? and ( C=? or D=?))
// SELECT * FROM student WHERE ((name <> 1) OR (name = 1 AND (age IS NULL OR age >= 11)))List<Student> list =studentService.lambdaQuery().and(wp -> wp.ne(Student::getName, "1")).or(wp ->wp.eq(Student::getName, "1").and(wpp -> wpp.isNull(Student::getAge).or().ge(Student::getAge, 11))).list();
