diesel/mysql/query_builder/
mod.rs

1use super::backend::Mysql;
2use crate::query_builder::QueryBuilder;
3use crate::result::QueryResult;
4
5#[doc(inline)]
6pub use self::query_fragment_impls::DuplicatedKeys;
7
8mod limit_offset;
9mod query_fragment_impls;
10
11/// The MySQL query builder
12#[allow(missing_debug_implementations)]
13#[derive(Default)]
14pub struct MysqlQueryBuilder {
15    sql: String,
16}
17
18impl MysqlQueryBuilder {
19    /// Constructs a new query builder with an empty query
20    pub fn new() -> Self {
21        MysqlQueryBuilder::default()
22    }
23}
24
25impl QueryBuilder<Mysql> for MysqlQueryBuilder {
26    fn push_sql(&mut self, sql: &str) {
27        self.sql.push_str(sql);
28    }
29
30    fn push_identifier(&mut self, identifier: &str) -> QueryResult<()> {
31        self.push_sql("`");
32        self.push_sql(&identifier.replace('`', "``"));
33        self.push_sql("`");
34        Ok(())
35    }
36
37    fn push_bind_param(&mut self) {
38        self.push_sql("?");
39    }
40
41    fn finish(self) -> String {
42        self.sql
43    }
44}