pub struct Record<ST: 'static>(_);
Available on crate feature postgres_backend only.
Expand description

The Record (a.k.a. tuple) SQL type.

ToSql impls

  • Any tuple which can be serialized to each of the elements (note: There are major caveats, see the section below)

FromSql impls

  • Any tuple which can be deserialized from each of the elements.

Caveats about serialization

Typically in the documentation for SQL types, we use “FromSql impls” as a shorthand for “Rust types that you can use to represent this type”. For every other type, that means there is specifically an implementation of the FromSql trait.

However, PostgreSQL does not support transmission of anonymous record types as bind parameters. It only supports transmission for named composite types. For this reason, if you tried to do int_tuple_col.eq((1, 2)), we will generate the SQL int_tuple_col = ($1, $2) rather than int_tuple_col = $1 as we would for anything else.

This should not be visible during normal usage. The only time this would affect you is if you were attempting to use sql_query with tuples. Your code would not compile in that case, as the ToSql trait itself is not implemented.

You can implement ToSql for named composite types. See WriteTuple for details.

Trait Implementations

The expression being returned

Perform the conversion

The expression being returned

Perform the conversion

The expression being returned

Perform the conversion

The expression being returned

Perform the conversion

The expression being returned

Perform the conversion

The expression being returned

Perform the conversion

The expression being returned

Perform the conversion

The expression being returned

Perform the conversion

The expression being returned

Perform the conversion

The expression being returned

Perform the conversion

The expression being returned

Perform the conversion

The expression being returned

Perform the conversion

The expression being returned

Perform the conversion

The expression being returned

Perform the conversion

The expression being returned

Perform the conversion

The expression being returned

Perform the conversion

The expression being returned

Perform the conversion

The expression being returned

Perform the conversion

The expression being returned

Perform the conversion

The expression being returned

Perform the conversion

The expression being returned

Perform the conversion

The expression being returned

Perform the conversion

The expression being returned

Perform the conversion

The expression being returned

Perform the conversion

The expression being returned

Perform the conversion

The expression being returned

Perform the conversion

The expression being returned

Perform the conversion

The expression being returned

Perform the conversion

The expression being returned

Perform the conversion

The expression being returned

Perform the conversion

The expression being returned

Perform the conversion

The expression being returned

Perform the conversion

Returns a copy of the value. Read more

Performs copy-assignment from source. Read more

Formats the value using the given formatter. Read more

Returns the “default value” for a type. Read more

See the trait documentation.

A specialized variant of from_sql for handling null values. Read more

See the trait documentation.

A specialized variant of from_sql for handling null values. Read more

See the trait documentation.

A specialized variant of from_sql for handling null values. Read more

See the trait documentation.

A specialized variant of from_sql for handling null values. Read more

See the trait documentation.

A specialized variant of from_sql for handling null values. Read more

See the trait documentation.

A specialized variant of from_sql for handling null values. Read more

See the trait documentation.

A specialized variant of from_sql for handling null values. Read more

See the trait documentation.

A specialized variant of from_sql for handling null values. Read more

See the trait documentation.

A specialized variant of from_sql for handling null values. Read more

See the trait documentation.

A specialized variant of from_sql for handling null values. Read more

See the trait documentation.

A specialized variant of from_sql for handling null values. Read more

See the trait documentation.

A specialized variant of from_sql for handling null values. Read more

See the trait documentation.

A specialized variant of from_sql for handling null values. Read more

See the trait documentation.

A specialized variant of from_sql for handling null values. Read more

See the trait documentation.

A specialized variant of from_sql for handling null values. Read more

See the trait documentation.

A specialized variant of from_sql for handling null values. Read more

See the trait documentation.

A specialized variant of from_sql for handling null values. Read more

See the trait documentation.

A specialized variant of from_sql for handling null values. Read more

See the trait documentation.

A specialized variant of from_sql for handling null values. Read more

See the trait documentation.

A specialized variant of from_sql for handling null values. Read more

See the trait documentation.

A specialized variant of from_sql for handling null values. Read more

See the trait documentation.

A specialized variant of from_sql for handling null values. Read more

See the trait documentation.

A specialized variant of from_sql for handling null values. Read more

See the trait documentation.

A specialized variant of from_sql for handling null values. Read more

See the trait documentation.

A specialized variant of from_sql for handling null values. Read more

See the trait documentation.

A specialized variant of from_sql for handling null values. Read more

See the trait documentation.

A specialized variant of from_sql for handling null values. Read more

See the trait documentation.

A specialized variant of from_sql for handling null values. Read more

See the trait documentation.

A specialized variant of from_sql for handling null values. Read more

See the trait documentation.

A specialized variant of from_sql for handling null values. Read more

See the trait documentation.

A specialized variant of from_sql for handling null values. Read more

See the trait documentation.

A specialized variant of from_sql for handling null values. Read more

Fetch the metadata for the given type Read more

A type which uniquely represents Self in a SQL query. Read more

Can the SQL generated by Self be uniquely identified by its type? Read more

Returns the type id of Self::QueryId if Self::HAS_STATIC_QUERY_ID. Returns None otherwise. Read more

The Rust type you’d like to map from. Read more

Construct an instance of this type

The Rust type you’d like to map from. Read more

Construct an instance of this type

The Rust type you’d like to map from. Read more

Construct an instance of this type

The Rust type you’d like to map from. Read more

Construct an instance of this type

The Rust type you’d like to map from. Read more

Construct an instance of this type

The Rust type you’d like to map from. Read more

Construct an instance of this type

The Rust type you’d like to map from. Read more

Construct an instance of this type

The Rust type you’d like to map from. Read more

Construct an instance of this type

The Rust type you’d like to map from. Read more

Construct an instance of this type

The Rust type you’d like to map from. Read more

Construct an instance of this type

The Rust type you’d like to map from. Read more

Construct an instance of this type

The Rust type you’d like to map from. Read more

Construct an instance of this type

The Rust type you’d like to map from. Read more

Construct an instance of this type

The Rust type you’d like to map from. Read more

Construct an instance of this type

The Rust type you’d like to map from. Read more

Construct an instance of this type

The Rust type you’d like to map from. Read more

Construct an instance of this type

The Rust type you’d like to map from. Read more

Construct an instance of this type

The Rust type you’d like to map from. Read more

Construct an instance of this type

The Rust type you’d like to map from. Read more

Construct an instance of this type

The Rust type you’d like to map from. Read more

Construct an instance of this type

The Rust type you’d like to map from. Read more

Construct an instance of this type

The Rust type you’d like to map from. Read more

Construct an instance of this type

The Rust type you’d like to map from. Read more

Construct an instance of this type

The Rust type you’d like to map from. Read more

Construct an instance of this type

The Rust type you’d like to map from. Read more

Construct an instance of this type

The Rust type you’d like to map from. Read more

Construct an instance of this type

The Rust type you’d like to map from. Read more

Construct an instance of this type

The Rust type you’d like to map from. Read more

Construct an instance of this type

Is this type nullable? Read more

Auto Trait Implementations

Blanket Implementations

Gets the TypeId of self. Read more

Immutably borrows from an owned value. Read more

Mutably borrows from an owned value. Read more

Returns the argument unchanged.

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

The not nullable representation of this type. Read more

The nullable representation of this type. Read more

Convert self to an expression for Diesel’s query builder. Read more

Convert &self to an expression for Diesel’s query builder. Read more

The resulting type after obtaining ownership.

Creates owned data from borrowed data, usually by cloning. Read more

Uses borrowed data to replace owned data, usually by cloning. Read more

The type returned in the event of a conversion error.

Performs the conversion.

The type returned in the event of a conversion error.

Performs the conversion.