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♥️ SQL query string builder for C++11
using namespace sql;
InsertModel i;
i.insert("score", 100)
("name", std::string("six"))
("age", (unsigned char)20)
("address", "beijing")
("create_time", nullptr)
.into("user");
std::cout<<i.str()<<std::endl;
// insert into user(score, name, age, address, create_time) values(100, 'six', 20, 'beijing', '2016-03-25 10:15:59')
SelectModel s;
s.select("id", "age", "name", "address")
.from("user")
.where(column("score") > 60 and (column("age") >= 20 or column("address").is_not_null()))
.group_by("age")
.having(column("age") > 10)
.order_by("age desc")
.limit(10)
.offset(1);
std::cout<<s<<std::endl;
// select id, age, name, address from user where (score > 60) and ((age >= 20) or (address is not null)) group by age having age > 10 order by age desc limit 10 offset 1
std::vector<int> a = {1, 2, 3};
UpdateModel u;
u.update("user")
.set("name", "ddc")
("age", 18)
("score", nullptr)
("address", "beijing")
.where(column("id").in(a));
std::cout<<u<<std::endl;
// update user set name = 'ddc', age = 18, score = 18, address = 'beijing' where id in (1, 2, 3)
DeleteModel d;
d._delete()
.from("user")
.where(column("id") == 1);
std::cout<<d<<std::endl;
// delete from user where id = 1