Module diesel::query_builder

Contains traits responsible for the actual construction of SQL statements

The types in this module are part of Diesel’s public API, but are generally only useful for implementing Diesel plugins. Applications should generally not need to care about the types inside of this module.

Re-exports

pub use self::bind_collector::BindCollector;

Modules

bind_collector

Types related to managing bind parameters during query construction.

Structs

AstPass	The primary type used when walking a Diesel AST during query execution.
BoxedLimitOffsetClause	A boxed variant of LimitOffsetClause
BoxedSqlQuery	See SqlQuery::into_boxed.
DebugQuery	A struct that implements fmt::Display and fmt::Debug to show the SQL representation of a query.
DeleteStatement	Represents a SQL DELETE statement.
IncompleteInsertStatement	The structure returned by insert_into.
InsertStatement	A fully constructed insert statement.
LimitClause	A query node representing a limit clause
LimitOffsetClause	A helper query node that contains both limit and offset clauses
NoLimitClause	A query node indicating the absence of a limit clause
NoOffsetClause	A query node indicating the absence of an offset clause
OffsetClause	A query node representing an offset clause
SqlQuery	The return value of sql_query.
UpdateStatement	Represents a complete UPDATE statement.

Traits

AsChangeset	Types which can be passed to update.set.
AsQuery	Types that can be converted into a complete, typed SQL query.
DecoratableTarget	Interface to add information to conflict targets. Designed to be open for further additions to conflict targets like constraints
IntoBoxedClause	A trait used to construct type erased boxed variant of the current query node
IntoBoxedSelectClause	An internal helper trait to convert different select clauses into their boxed counter part.
IntoUpdateTarget	A type which can be passed to update or delete.
Query	A complete SQL query with a return type.
QueryBuilder	Constructs a SQL query from a Diesel AST.
QueryFragment	An untyped fragment of SQL.
QueryId	Uniquely identifies queries by their type for the purpose of prepared statement caching.
SelectClauseExpression	Specialised variant of Expression for select clause types
SelectClauseQueryFragment	Specialised variant of QueryFragment for select clause types
SelectQuery	Indicates that a type is a SELECT statement.
UndecoratedInsertRecord	Marker trait to indicate that no additional operations have been added to a record for insert.

Functions

debug_query

Takes a query QueryFragment expression as an argument and returns a type that implements fmt::Display and fmt::Debug to show the query.

Type Definitions

BoxedDeleteStatement	A DELETE statement with a boxed WHERE clause
BoxedUpdateStatement	An UPDATE statement with a boxed WHERE clause.
BuildQueryResult	A specialized Result type used with the query builder.

Derive Macros

AsChangeset	Implements AsChangeset
QueryId	Implements QueryId