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perf: pull distinct to outermost SQL
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parent
7a4c9266ec
commit
3c880b2f49
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@ -428,14 +428,13 @@ fn query_from_filter(f: &ReqFilter) -> (String, Vec<Box<dyn ToSql>>) {
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// if the filter is malformed, don't return anything.
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if f.force_no_match {
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let empty_query =
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"SELECT DISTINCT(e.content), e.created_at FROM event e WHERE 1=0".to_owned();
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let empty_query = "SELECT e.content, e.created_at FROM event e WHERE 1=0".to_owned();
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// query parameters for SQLite
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let empty_params: Vec<Box<dyn ToSql>> = vec![];
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return (empty_query, empty_params);
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}
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let mut query = "SELECT DISTINCT(e.content), e.created_at FROM event e".to_owned();
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let mut query = "SELECT e.content, e.created_at FROM event e".to_owned();
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// query parameters for SQLite
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let mut params: Vec<Box<dyn ToSql>> = vec![];
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@ -591,7 +590,7 @@ fn query_from_sub(sub: &Subscription) -> (String, Vec<Box<dyn ToSql>>) {
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// encapsulate subqueries into select statements
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let subqueries_selects: Vec<String> = subqueries
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.iter()
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.map(|s| format!("SELECT content, created_at FROM ({})", s))
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.map(|s| format!("SELECT distinct content, created_at FROM ({})", s))
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.collect();
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let query: String = subqueries_selects.join(" UNION ");
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(query, params)
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