删除主键为myschar的mysql中的行

Question

我正在尝试从表演示中删除行，其中主键是playername和country.Both中的行的类型为varchar，长度为32。其他列是category（varchar 32 length）和price（int）。我已经尝试了以下所有查询来删除行但在每种情况下都无法删除。任何人都可以告诉我这样做的正确方法。谢谢你提前。 尝试过的查询：

DELETE FROM demo WHERE Pname like 'shakib' and country like 'bangladesh'
DELETE FROM demo WHERE `Pname` like 'shakib' and `country` like 'bangladesh'
DELETE FROM `demo` WHERE `Pname` like 'shakib' and `country` like 'bangladesh'
DELETE FROM `demo` WHERE `Pname`='shakib' and `country`='bangladesh'
DELETE FROM `demo` WHERE `Pname`="shakib" and `country`="bangladesh"