Struct RelationalQuery 

pub struct RelationalQuery<T> { /* private fields */ }

Relational query with result shape in T (tuple that grows with each relation).

Implementations

impl<T> RelationalQuery<T>

pub fn inner_builder(&self) -> &RelationalSelectBuilder

Inner SQL builder.

pub fn to_sql_postgres(&self) -> String

Postgres SQL.

pub fn to_sql_sqlite(&self) -> String

SQLite SQL.

pub fn to_sql(&self) -> String

Active dialect SQL.

pub fn parse_many_column(json: &str) -> Result<Vec<Vec<Value>>, DbCoreError>

Parse a has-many JSON column (json_agg / json_group_array shape).

Errors

Forwards toolu_orm_core::relational_row::parse_json_array_of_arrays errors.

pub fn parse_one_column(json: &str) -> Result<Vec<Value>, DbCoreError>

Parse a has-one / belongs-to JSON column (json_build_array / null).

Errors

Forwards toolu_orm_core::relational_row::parse_json_single_array errors.

impl<Base> RelationalQuery<(Base,)>

pub fn new(table: &str, columns: &[&str]) -> Self

Start a query; base row type is wrapped in a 1-tuple.

impl<T> RelationalQuery<T>

pub fn with_many<R>( self, field_name: &str, target_table: &str, local_key: &str, foreign_key_on_target: &str, target_columns: &[&str], ) -> RelationalQuery<<T as TupleAppend<Vec<R>>>::Output>

where T: TupleAppend<Vec<R>>,

Add has-many; appends Vec<R>.

pub fn with_one<R>( self, field_name: &str, target_table: &str, local_key: &str, foreign_key_on_target: &str, target_columns: &[&str], ) -> RelationalQuery<<T as TupleAppend<Option<R>>>::Output>

where T: TupleAppend<Option<R>>,

Add belongs-to / has-one; appends Option<R>.