Trait MigrationDialect 

pub trait MigrationDialect {
    // Required methods
    fn name(&self) -> &'static str;
    fn rename_table(&self, op: &RenameTableOp) -> String;
    fn alter_column(&self, op: &AlterColumnOp) -> String;
    fn rename_column(&self, op: &RenameColumnOp) -> String;
    fn drop_index(&self, op: &DropIndexOp) -> String;
    fn drop_foreign_key(&self, op: &DropForeignKeyOp) -> String;
    fn map_data_type(&self, dt: &DataType) -> String;
    fn autoincrement_keyword(&self) -> String;

    // Provided methods
    fn generate_sql(&self, operation: &Operation) -> String { ... }
    fn create_table(&self, op: &CreateTableOp) -> String { ... }
    fn drop_table(&self, op: &DropTableOp) -> String { ... }
    fn add_column(&self, op: &AddColumnOp) -> String { ... }
    fn drop_column(&self, op: &DropColumnOp) -> String { ... }
    fn create_index(&self, op: &CreateIndexOp) -> String { ... }
    fn add_foreign_key(&self, op: &AddForeignKeyOp) -> String { ... }
    fn column_definition(&self, col: &ColumnDefinition) -> String { ... }
    fn table_constraint(&self, constraint: &TableConstraint) -> String { ... }
    fn render_default(&self, default: &DefaultValue) -> String { ... }
    fn quote_char(&self) -> char { ... }
    fn quote_identifier(&self, name: &str) -> String { ... }
    fn index_type_sql(&self, index_type: &IndexType) -> &'static str { ... }
}

Trait for dialect-specific SQL generation for migrations.

Required Methods

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

Returns the dialect name.

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

Generates SQL for RENAME TABLE.

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

Generates SQL for ALTER COLUMN.

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

Generates SQL for RENAME 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 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.

Provided Methods

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

Generates SQL for an operation.

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

Generates SQL for CREATE TABLE.

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

Renders a default value.

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.

Implementors

impl MigrationDialect for DuckDbDialect

impl MigrationDialect for PostgresDialect

impl MigrationDialect for SqliteDialect