external

var (
	// ErrDatabaseRequired is returned when database is not specified
	ErrDatabaseRequired = errors.New("database is required")
	// ErrTableRequired is returned when table is not specified
	ErrTableRequired = errors.New("table is required")
	// ErrCacheConfigRequired is returned when cache configuration is not specified
	ErrCacheConfigRequired = errors.New("cache configuration is required")
	// ErrInvalidIncrementalInterval is returned when incremental scan interval is invalid
	ErrInvalidIncrementalInterval = errors.New("incremental_scan_interval must be positive")
	// ErrInvalidFullInterval is returned when full scan interval is invalid
	ErrInvalidFullInterval = errors.New("full_scan_interval must be positive")
	// ErrInvalidIntervalOrder is returned when incremental interval is not less than full interval
	ErrInvalidIntervalOrder = errors.New("incremental_scan_interval must be less than full_scan_interval")
)

var (
	// ErrInvalidFrontmatter is returned when frontmatter is invalid
	ErrInvalidFrontmatter = errors.New("invalid frontmatter")
	// ErrSQLContentRequired is returned when SQL content is not specified
	ErrSQLContentRequired = errors.New("sql content is required")
)