Module 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 crate::pg::query_builder::tablesample::TablesampleMethod;
  postgres_backend

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.
• BoxedSqlQuery
  See SqlQuery::into_boxed.
• CollectedQueryNon-i-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.
• DeleteStatement
  Represents a SQL DELETE statement.
• IncompleteInsertStatement
  The structure returned by insert_into.
• InsertStatementNon-i-implement-a-third-party-backend-and-opt-into-breaking-changes
  A fully constructed insert statement.
• Onlypostgres_backend
  Represents a query with an ONLY clause.
• SqlQuery
  The return value of sql_query.
• Tablesamplepostgres_backend
  Represents a query with a TABLESAMPLE clause.
• UpdateStatement
  Represents a complete UPDATE statement.
• UpdateTarget

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.
• MoveableBindCollectorNon-i-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.
• SelectQuery
  Indicates that a type is a SELECT statement.

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