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<meta name="description" content="API documentation for the Rust `AlgebraicQuery` struct in crate `mentat_query_algebrizer`.">
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<title>mentat_query_algebrizer::AlgebraicQuery - Rust</title>
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<p class='location'>Struct AlgebraicQuery</p><div class="sidebar-elems"><div class="block items"><a class="sidebar-title" href="#fields">Fields</a><div class="sidebar-links"><a href="#structfield.find_spec">find_spec</a><a href="#structfield.with">with</a><a href="#structfield.named_projection">named_projection</a><a href="#structfield.order">order</a><a href="#structfield.limit">limit</a><a href="#structfield.cc">cc</a></div><a class="sidebar-title" href="#methods">Methods</a><div class="sidebar-links"><a href="#method.is_known_empty">is_known_empty</a><a href="#method.is_fully_bound">is_fully_bound</a><a href="#method.is_fully_unit_bound">is_fully_unit_bound</a><a href="#method.unbound_variables">unbound_variables</a></div><a class="sidebar-title" href="#implementations">Trait Implementations</a><div class="sidebar-links"><a href="#impl-Debug">Debug</a></div><a class="sidebar-title" href="#synthetic-implementations">Auto Trait Implementations</a><div class="sidebar-links"><a href="#impl-Send">!Send</a><a href="#impl-Sync">!Sync</a></div></div><p class='location'><a href='index.html'>mentat_query_algebrizer</a></p><script>window.sidebarCurrent = {name: 'AlgebraicQuery', ty: 'struct', relpath: ''};</script><script defer src="sidebar-items.js"></script></div>
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<section id='main' class="content"><h1 class='fqn'><span class='in-band'>Struct <a href='index.html'>mentat_query_algebrizer</a>::<wbr><a class="struct" href=''>AlgebraicQuery</a></span><span class='out-of-band'><span id='render-detail'>
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[<span class='inner'>−</span>]
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</span><a class='srclink' href='../src/mentat_query_algebrizer/lib.rs.html#130-150' title='goto source code'>[src]</a></span></h1><div class="docblock type-decl"><pre class='rust struct'>pub struct AlgebraicQuery {
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pub find_spec: <a class="struct" href="https://doc.rust-lang.org/nightly/alloc/rc/struct.Rc.html" title="struct alloc::rc::Rc">Rc</a><FindSpec>,
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pub with: <a class="struct" href="https://doc.rust-lang.org/nightly/alloc/btree/set/struct.BTreeSet.html" title="struct alloc::btree::set::BTreeSet">BTreeSet</a><Variable>,
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pub named_projection: <a class="struct" href="https://doc.rust-lang.org/nightly/alloc/btree/set/struct.BTreeSet.html" title="struct alloc::btree::set::BTreeSet">BTreeSet</a><Variable>,
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pub order: <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a><<a class="struct" href="https://doc.rust-lang.org/nightly/alloc/vec/struct.Vec.html" title="struct alloc::vec::Vec">Vec</a><<a class="struct" href="../mentat_query_algebrizer/struct.OrderBy.html" title="struct mentat_query_algebrizer::OrderBy">OrderBy</a>>>,
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pub limit: Limit,
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pub cc: <a class="struct" href="../mentat_query_algebrizer/struct.ConjoiningClauses.html" title="struct mentat_query_algebrizer::ConjoiningClauses">ConjoiningClauses</a>,
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// some fields omitted
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}</pre></div><h2 id='fields' class='fields small-section-header'>
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Fields<a href='#fields' class='anchor'></a></h2><span id="structfield.find_spec" class="structfield small-section-header">
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<a href="#structfield.find_spec" class="anchor field"></a>
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<code>find_spec: <a class="struct" href="https://doc.rust-lang.org/nightly/alloc/rc/struct.Rc.html" title="struct alloc::rc::Rc">Rc</a><FindSpec></code>
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</span></span><span id="structfield.with" class="structfield small-section-header">
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<a href="#structfield.with" class="anchor field"></a>
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<code>with: <a class="struct" href="https://doc.rust-lang.org/nightly/alloc/btree/set/struct.BTreeSet.html" title="struct alloc::btree::set::BTreeSet">BTreeSet</a><Variable></code>
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</span></span><div class='docblock'><p>The set of variables that the caller wishes to be used for grouping when aggregating.
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These are specified in the query input, as <code>:with</code>, and are then chewed up during projection.
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If no variables are supplied, then no additional grouping is necessary beyond the
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non-aggregated projection list.</p>
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</div><span id="structfield.named_projection" class="structfield small-section-header">
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<code>named_projection: <a class="struct" href="https://doc.rust-lang.org/nightly/alloc/btree/set/struct.BTreeSet.html" title="struct alloc::btree::set::BTreeSet">BTreeSet</a><Variable></code>
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</span></span><div class='docblock'><p>Some query features, such as ordering, are implemented by implicit reference to SQL columns.
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In order for these references to be 'live', those columns must be projected.
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This is the set of variables that must be so projected.
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This is not necessarily every variable that will be so required -- some variables
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will already be in the projection list.</p>
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</div><span id="structfield.order" class="structfield small-section-header">
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<a href="#structfield.order" class="anchor field"></a>
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<code>order: <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a><<a class="struct" href="https://doc.rust-lang.org/nightly/alloc/vec/struct.Vec.html" title="struct alloc::vec::Vec">Vec</a><<a class="struct" href="../mentat_query_algebrizer/struct.OrderBy.html" title="struct mentat_query_algebrizer::OrderBy">OrderBy</a>>></code>
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</span></span><span id="structfield.limit" class="structfield small-section-header">
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<a href="#structfield.limit" class="anchor field"></a>
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<code>limit: Limit</code>
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<a href="#structfield.cc" class="anchor field"></a>
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<code>cc: <a class="struct" href="../mentat_query_algebrizer/struct.ConjoiningClauses.html" title="struct mentat_query_algebrizer::ConjoiningClauses">ConjoiningClauses</a></code>
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Methods<a href='#methods' class='anchor'></a>
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<h3 id='impl' class='impl'><span class='in-band'><table class='table-display'><tbody><tr><td><code>impl <a class="struct" href="../mentat_query_algebrizer/struct.AlgebraicQuery.html" title="struct mentat_query_algebrizer::AlgebraicQuery">AlgebraicQuery</a></code><a href='#impl' class='anchor'></a></span></td><td><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../src/mentat_query_algebrizer/lib.rs.html#152-189' title='goto source code'>[src]</a></span></td></tr></tbody></table></h3><div class='impl-items'><h4 id='method.is_known_empty' class="method"><span id='is_known_empty.v' class='invisible'><table class='table-display'><tbody><tr><td><code>pub fn <a href='#method.is_known_empty' class='fnname'>is_known_empty</a>(&self) -> <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.bool.html">bool</a></code></span></td><td><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../src/mentat_query_algebrizer/lib.rs.html#154-156' title='goto source code'>[src]</a></td></tr></tbody></table></span></h4><h4 id='method.is_fully_bound' class="method"><span id='is_fully_bound.v' class='invisible'><table class='table-display'><tbody><tr><td><code>pub fn <a href='#method.is_fully_bound' class='fnname'>is_fully_bound</a>(&self) -> <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.bool.html">bool</a></code></span></td><td><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../src/mentat_query_algebrizer/lib.rs.html#159-174' title='goto source code'>[src]</a></td></tr></tbody></table></span></h4><div class='docblock'><p>Return true if every variable in the find spec is fully bound to a single value.</p>
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</div><h4 id='method.is_fully_unit_bound' class="method"><span id='is_fully_unit_bound.v' class='invisible'><table class='table-display'><tbody><tr><td><code>pub fn <a href='#method.is_fully_unit_bound' class='fnname'>is_fully_unit_bound</a>(&self) -> <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.bool.html">bool</a></code></span></td><td><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../src/mentat_query_algebrizer/lib.rs.html#178-181' title='goto source code'>[src]</a></td></tr></tbody></table></span></h4><div class='docblock'><p>Return true if every variable in the find spec is fully bound to a single value,
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and evaluating the query doesn't require running SQL.</p>
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</div><h4 id='method.unbound_variables' class="method"><span id='unbound_variables.v' class='invisible'><table class='table-display'><tbody><tr><td><code>pub fn <a href='#method.unbound_variables' class='fnname'>unbound_variables</a>(&self) -> <a class="struct" href="https://doc.rust-lang.org/nightly/alloc/btree/set/struct.BTreeSet.html" title="struct alloc::btree::set::BTreeSet">BTreeSet</a><Variable></code></span></td><td><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../src/mentat_query_algebrizer/lib.rs.html#186-188' title='goto source code'>[src]</a></td></tr></tbody></table></span></h4><div class='docblock'><p>Return a set of the input variables mentioned in the <code>:in</code> clause that have not yet been
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bound. We do this by looking at the CC.</p>
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