Crate mentat_query_algebrizer

Macros

bail

Structs

AlgebraicQuery
ColumnAlternation	A ColumnAlternation constraint is satisfied if at least one of its inner constraints is satisfied. An empty ColumnAlternation is never satisfied.
ColumnIntersection	A ColumnIntersection constraint is satisfied if all of its inner constraints are satisfied. An empty intersection is always satisfied.
ConjoiningClauses	A ConjoiningClauses (CC) is a collection of clauses that are combined with JOIN. The topmost form in a query is a ConjoiningClauses.
FindQuery	A FindQuery represents a valid query to the query algebrizer.
Known	A convenience wrapper around things known in memory: the schema and caches. We use a trait object here to avoid making dozens of functions generic over the type of the cache. If performance becomes a concern, we should hard-code specific kinds of cache right here, and/or eliminate the Option.
OrderBy	Represents an entry in the ORDER BY list: a variable or a variable's type tag. (We require order vars to be projected, so we can simply use a variable here.)
QualifiedAlias	A particular column of a particular aliased table. E.g., "datoms123", Attribute.
QueryInputs	Define the inputs to a query. This is in two parts: a set of values known now, and a set of types known now. The separate map of types is to allow queries to be algebrized without full knowledge of the bindings that will be used at execution time. When built correctly, types is guaranteed to contain the types of values -- use QueryInputs::new or QueryInputs::with_values to construct an instance.
SourceAlias	The association between a table and its alias. E.g., AllDatoms, "all_datoms123".

Enums

AlgebrizerError
BindingError
Column
ColumnConstraint
ColumnConstraintOrAlternation
ComputedTable	A source of rows that isn't a named table -- typically a subquery or union.
DatomsColumn	One of the named columns of our tables.
DatomsTable	This enum models the fixed set of default tables we have -- two tables and two views -- and computed tables defined in the enclosing CC.
EmptyBecause
FulltextColumn	One of the named columns of our fulltext values table.
QueryValue
VariableColumn

Traits

ColumnName

Functions

algebrize
algebrize_with_counter
algebrize_with_inputs
parse_find_string

Type Definitions

Result
TableAlias	A specific instance of a table within a query. E.g., "datoms123".
VariableBindings