我有一个联系人订阅表。一个联系人可以有多个订阅: CREATE TABLE contact (
id INTEGER NOT NULL,
name TEXT,
PRIMARY KEY (id)
);
CREATE TABLE subscription (
id INTEGER NOT NULL,
contact_id INTEGER NOT NU
我正试图在一个条件中实现多列查询。但它使一个SQL错误。 我原来的查询是这样的 SELECT id
FROM usertable
WHERE (user_addedon BETWEEN '2013-07-02 00:00:01' AND '2013-08-01 23:59:59')
OR (user_deletedon BETWEEN '2013-07-02 00:00:01' AN