Module query_builder

Expand description

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.

Modules§

bind_collector: Types related to managing bind parameters during query construction.

Structs§

Alli-implement-a-third-party-backend-and-opt-into-breaking-changes: Keep duplicate rows in the result
AstPass: The primary type used when walking a Diesel AST during query execution.
AstPassToSqlOptionsi-implement-a-third-party-backend-and-opt-into-breaking-changes: This is used to pass down additional settings to the AstPass when rendering the sql string.
BatchInserti-implement-a-third-party-backend-and-opt-into-breaking-changes: This type represents a batch insert clause, which allows to insert multiple rows at once.
BoxedLimitOffsetClausei-implement-a-third-party-backend-and-opt-into-breaking-changes: A boxed variant of LimitOffsetClause
BoxedSelectStatementi-implement-a-third-party-backend-and-opt-into-breaking-changes: This type represents a boxed select query
BoxedSqlQuery: See SqlQuery::into_boxed.
CollectedQueryi-implement-a-third-party-backend-and-opt-into-breaking-changes: A SQL query variant with already collected bind data which can be moved
DebugQuery: A struct that implements fmt::Display and fmt::Debug to show the SQL representation of a query.
DefaultValuesi-implement-a-third-party-backend-and-opt-into-breaking-changes
DeleteStatement: Represents a SQL DELETE statement.
Distincti-implement-a-third-party-backend-and-opt-into-breaking-changes: Remove duplicate rows in the result, this is the default behavior of UNION, INTERSECT and EXCEPT
Excepti-implement-a-third-party-backend-and-opt-into-breaking-changes: Computes the set difference of the rows returned by the involved SELECT statements using SQL EXCEPT
FromClausei-implement-a-third-party-backend-and-opt-into-breaking-changes
IncompleteInsertStatement: The structure returned by insert_into.
InsertOrIgnorei-implement-a-third-party-backend-and-opt-into-breaking-changes: A marker type for insert or ignore statements
InsertStatementi-implement-a-third-party-backend-and-opt-into-breaking-changes: A fully constructed insert statement.
Intersecti-implement-a-third-party-backend-and-opt-into-breaking-changes: Computes the set intersection of the rows returned by the involved SELECT statements using SQL INTERSECT
LimitClausei-implement-a-third-party-backend-and-opt-into-breaking-changes: A query node representing a limit clause
LimitOffsetClausei-implement-a-third-party-backend-and-opt-into-breaking-changes: A helper query node that contains both limit and offset clauses
NoFromClausei-implement-a-third-party-backend-and-opt-into-breaking-changes: This type represents a not existing from clause
NoLimitClausei-implement-a-third-party-backend-and-opt-into-breaking-changes: A query node indicating the absence of a limit clause
NoOffsetClausei-implement-a-third-party-backend-and-opt-into-breaking-changes: A query node indicating the absence of an offset clause
NoOrderClausei-implement-a-third-party-backend-and-opt-into-breaking-changes: DSL node that represents that no order clause is set
OffsetClausei-implement-a-third-party-backend-and-opt-into-breaking-changes: A query node representing an offset clause
Onlypostgres_backend: Represents a query with an ONLY clause.
OrderClausei-implement-a-third-party-backend-and-opt-into-breaking-changes: DSL node that represents that an order clause is set
ParenthesisWrapperi-implement-a-third-party-backend-and-opt-into-breaking-changes: Wrapper used to wrap rhs sql in parenthesis when supported by backend
Replacei-implement-a-third-party-backend-and-opt-into-breaking-changes: A marker type for replace statements
ReturningClausei-implement-a-third-party-backend-and-opt-into-breaking-changes: This type represents a SQL Returning clause
SelectStatementi-implement-a-third-party-backend-and-opt-into-breaking-changes: This type represents a select query
SqlQuery: The return value of sql_query.
Tablesamplepostgres_backend: Represents a query with a TABLESAMPLE clause.
Unioni-implement-a-third-party-backend-and-opt-into-breaking-changes: Computes the set union of the rows returned by the involved SELECT statements using SQL UNION
UpdateStatement: Represents a complete UPDATE statement.
UpdateTarget
ValuesClausei-implement-a-third-party-backend-and-opt-into-breaking-changes: This type represents a values clause used as part of insert statements

Traits§

AsChangeset: Types which can be passed to update.set.
AsQuery: Types that can be converted into a complete, typed SQL query.
BindCollector: A type which manages serializing bind parameters during query construction.
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
IntoUpdateTarget: A type which can be passed to update or delete.
MoveableBindCollectori-implement-a-third-party-backend-and-opt-into-breaking-changes: A movable version of the bind collector which allows it to be extracted, moved and refilled.
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.
SelectClauseExpressioni-implement-a-third-party-backend-and-opt-into-breaking-changes: Specialised variant of Expression for select clause types
SelectQuery: Indicates that a type is a SELECT statement.
SupportsCombinationClausei-implement-a-third-party-backend-and-opt-into-breaking-changes: Marker trait used to indicate whenever a backend supports given combination
UndecoratedInsertRecordi-implement-a-third-party-backend-and-opt-into-breaking-changes: 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 Aliases§

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.
IncompleteInsertOrIgnoreStatement: Represents the return type of diesel::insert_or_ignore_into
IncompleteReplaceStatement: Represents the return type of diesel::replace_into
InsertOrIgnoreStatement: Represents a complete INSERT OR IGNORE statement.
ReplaceStatement: Represents a complete INSERT OR REPLACE statement.

Derive Macros§

AsChangeset: Implements AsChangeset
QueryId: Implements QueryId