Struct diesel::sql_types::Record

source ·
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
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