Struct DuckDbDialect 

pub struct DuckDbDialect;

DuckDB dialect for migration SQL generation.

DuckDB does not support AUTOINCREMENT or SERIAL/BIGSERIAL. Instead, auto-increment is implemented via CREATE SEQUENCE + DEFAULT nextval('seq_<table>_<column>'). The [create_table] override emits the sequence DDL automatically for every column marked with autoincrement.

Implementations

impl DuckDbDialect

pub const fn new() -> Self

Creates a new DuckDB dialect.

Trait Implementations

impl Clone for DuckDbDialect

fn clone(&self) -> DuckDbDialect

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for DuckDbDialect

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for DuckDbDialect

fn default() -> DuckDbDialect

Returns the “default value” for a type.

impl MigrationDialect for DuckDbDialect

fn name(&self) -> &'static str

Returns the dialect name.

fn map_data_type(&self, dt: &DataType) -> String

Maps a DataType to the dialect-specific SQL type.

fn autoincrement_keyword(&self) -> String

Returns the AUTOINCREMENT keyword for this dialect.

fn create_table(&self, op: &CreateTableOp) -> String

Generates SQL for CREATE TABLE.

fn render_default(&self, default: &DefaultValue) -> String

Renders a default value.

fn rename_table(&self, op: &RenameTableOp) -> String

Generates SQL for RENAME TABLE.

fn rename_column(&self, op: &RenameColumnOp) -> String

Generates SQL for RENAME COLUMN.

fn alter_column(&self, op: &AlterColumnOp) -> String

Generates SQL for ALTER COLUMN.

fn drop_index(&self, op: &DropIndexOp) -> String

Generates SQL for DROP INDEX.

fn drop_foreign_key(&self, op: &DropForeignKeyOp) -> String

Generates SQL for DROP FOREIGN KEY.

fn generate_sql(&self, operation: &Operation) -> String

Generates SQL for an operation.

fn drop_table(&self, op: &DropTableOp) -> String

Generates SQL for DROP TABLE.

fn add_column(&self, op: &AddColumnOp) -> String

Generates SQL for ADD COLUMN.

fn drop_column(&self, op: &DropColumnOp) -> String

Generates SQL for DROP COLUMN.

fn create_index(&self, op: &CreateIndexOp) -> String

Generates SQL for CREATE INDEX.

fn add_foreign_key(&self, op: &AddForeignKeyOp) -> String

Generates SQL for ADD FOREIGN KEY.

fn column_definition(&self, col: &ColumnDefinition) -> String

Generates SQL for a column definition.

fn table_constraint(&self, constraint: &TableConstraint) -> String

Generates SQL for a table constraint.

fn quote_char(&self) -> char

Returns the identifier quote character.

fn quote_identifier(&self, name: &str) -> String

Quotes an identifier.

fn index_type_sql(&self, index_type: &IndexType) -> &'static str

Maps an index type to SQL.

impl RustTypeMapping for DuckDbDialect

fn map_type(&self, rust_type: &str) -> DataType

Maps a Rust type name to the dialect-specific SQL data type.

impl Copy for DuckDbDialect