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use super::backend::Pg;
use query_builder::QueryBuilder;
use result::QueryResult;
mod distinct_on;
mod query_fragment_impls;
pub use self::distinct_on::DistinctOnClause;
#[allow(missing_debug_implementations)]
#[derive(Default)]
pub struct PgQueryBuilder {
sql: String,
bind_idx: u32,
}
impl PgQueryBuilder {
pub fn new() -> Self {
PgQueryBuilder::default()
}
}
impl QueryBuilder<Pg> for PgQueryBuilder {
fn push_sql(&mut self, sql: &str) {
self.sql.push_str(sql);
}
fn push_identifier(&mut self, identifier: &str) -> QueryResult<()> {
self.push_sql("\"");
self.push_sql(&identifier.replace('"', "\"\""));
self.push_sql("\"");
Ok(())
}
fn push_bind_param(&mut self) {
self.bind_idx += 1;
let sql = format!("${}", self.bind_idx);
self.push_sql(&sql);
}
fn finish(self) -> String {
self.sql
}
}