diff

type ColumnDef struct {
	Name       string
	Kind       dialect.Kind
	Length     int
	Precision  int
	Scale      int
	Unsigned   bool
	NotNull    bool
	Primary    bool
	Auto       bool
	Big        bool
	HasDefault bool
	Default    any
}

type IndexDef struct {
	Name    string
	Columns []string
	Unique  bool
}

type Op struct {
	Kind   OpKind
	Table  string
	Def    *TableDef  // CreateTable
	Column *ColumnDef // AddColumn
	From   string     // RenameColumn old name; DropColumn name
	To     string     // RenameColumn new name
	Index  *IndexDef  // AddIndex / DropIndex
	Note   string     // human hint, rendered as a SQL comment in the down file
}

type OpKind string

type Options struct {
	// AllowDestructive includes DropColumn and DropIndex in Ops.
	AllowDestructive bool
	// Renames maps "table.old_column" to "new_column" so a rename is not planned as drop+add.
	Renames map[string]string
}

type Plan struct {
	Ops []Op
	// Blocked holds destructive ops (drops) that were not applied because AllowDestructive is false.
	Blocked  []Op
	Warnings []string
	// contains filtered or unexported fields
}

type TableDef struct {
	Name    string
	Columns []ColumnDef
	Primary []string // composite primary key columns (len > 1)
	Uniques [][]string
	Indexes []IndexDef
}