feature

const (

	// CTE enables Common Table Expressions (WITH ... AS ...) syntax.
	CTE Feature = 1 << iota
	// WithValues enables WITH ... (VALUES ...) syntax for inline value lists.
	WithValues
	// Returning enables the RETURNING clause to return rows affected by DML statements.
	Returning
	// Output enables the OUTPUT clause, the MSSQL equivalent of RETURNING.
	Output
	// DefaultPlaceholder enables the DEFAULT keyword as a placeholder in INSERT value lists.
	DefaultPlaceholder
	// DoubleColonCast enables PostgreSQL-style :: type cast syntax.
	DoubleColonCast
	// ValuesRow enables VALUES ROW(...) syntax.
	ValuesRow
	// CompositeIn enables WHERE (A, B) IN ((N, NN), (N, NN), ...) composite comparison syntax.
	CompositeIn

	// OffsetFetch enables OFFSET ... FETCH NEXT syntax (MSSQL).
	OffsetFetch
	// SelectExists enables EXISTS subquery expressions.
	SelectExists

	// InsertReturning enables INSERT ... RETURNING syntax.
	InsertReturning
	// InsertTableAlias enables table alias support in INSERT statements.
	InsertTableAlias
	// InsertOnConflict enables INSERT ... ON CONFLICT syntax (PostgreSQL, SQLite).
	InsertOnConflict
	// InsertOnDuplicateKey enables INSERT ... ON DUPLICATE KEY syntax (MySQL).
	InsertOnDuplicateKey
	// InsertIgnore enables INSERT IGNORE syntax to silently skip conflicting rows (MySQL).
	InsertIgnore

	// UpdateFromTable enables UPDATE ... FROM ... syntax for joining tables in updates.
	UpdateFromTable
	// UpdateMultiTable enables multi-table UPDATE syntax (MySQL).
	UpdateMultiTable
	// UpdateTableAlias enables table alias support in UPDATE statements.
	UpdateTableAlias
	// UpdateOrderLimit enables UPDATE ... ORDER BY ... LIMIT syntax.
	UpdateOrderLimit

	// DeleteReturning enables DELETE ... RETURNING syntax.
	DeleteReturning
	// DeleteTableAlias enables table alias support in DELETE statements.
	DeleteTableAlias
	// DeleteOrderLimit enables DELETE ... ORDER BY ... LIMIT syntax.
	DeleteOrderLimit

	// Merge enables MERGE ... USING ... ON ... WHEN syntax for upsert operations.
	Merge
	// MergeReturning enables MERGE ... RETURNING syntax.
	MergeReturning

	// TableCascade enables CASCADE support for DROP TABLE and related operations.
	TableCascade
	// TableIdentity enables table-level IDENTITY property (MSSQL).
	TableIdentity
	// TableTruncate enables TRUNCATE TABLE support.
	TableTruncate
	// TableNotExists enables IF NOT EXISTS / IF EXISTS syntax for CREATE TABLE and DROP TABLE.
	TableNotExists
	// AlterColumnExists enables ADD/DROP COLUMN IF NOT EXISTS / IF EXISTS syntax.
	AlterColumnExists
	// CreateIndexIfNotExists enables CREATE INDEX IF NOT EXISTS syntax.
	CreateIndexIfNotExists

	// AutoIncrement enables AUTO_INCREMENT syntax for auto-generated columns (MySQL).
	AutoIncrement
	// Identity enables IDENTITY column syntax for auto-generated columns (MSSQL).
	Identity
	// GeneratedIdentity enables GENERATED ALWAYS AS IDENTITY syntax (PostgreSQL).
	GeneratedIdentity

	// FKDefaultOnAction indicates that FK ON UPDATE/ON DELETE has the default value NO ACTION.
	FKDefaultOnAction
	// MSSavepoint enables Microsoft SQL Server savepoint support.
	MSSavepoint
)