parser

type Column struct {
	Name         string
	Type         string
	RawType      string
	IsNotNull    bool
	IsPrimaryKey bool
	IsUnique     bool
	Default      string
	Check        string
	References   *Reference
	OnDelete     string
}

type Index struct {
	Name    string
	Table   string
	Columns []string
	Where   string
	Unique  bool
}

type Reference struct {
	Table  string
	Column string
}

type Schema struct {
	Tables  []Table
	Indexes []Index
}

type Table struct {
	Name              string
	Columns           []Column
	PrimaryKey        []string // composite primary key
	UniqueConstraints [][]string
	Indexes           []Index
}