ddl

type ForeignKey struct {
	Column    string
	RefTable  string
	RefColumn string
}

type Index struct {
	Name     string
	Columns  []string
	IsUnique bool
}

type Table struct {
	Name        string
	Columns     map[string]string // column_name → Go type
	ColumnOrder []string          // DDL definition order
	ForeignKeys []ForeignKey
	Indexes     []Index
	PrimaryKey  []string
	VarcharLen  map[string]int      // column → VARCHAR(N)
	CheckEnums  map[string][]string // column → CHECK IN values
}