add ToMigrationStatements helper

Author: yad-unext

database/spanner/ddl/.got/snapshots/TestToMigrationStatements/list.json

@@ -0,0 +1,4 @@
+[
+  "CREATE TABLE test (id INT64)",
+  "CREATE PROPERTY GRAPH SocialGraph NODE TABLES (Person) EDGE TABLES (Knows)"
+]

database/spanner/ddl/ddl_test.go

@@ -30,3 +30,19 @@ func TestBasic(t *testing.T) {
 
 	g.Snapshot("ddl-string", ddl.String())
 }
+
+func TestToMigrationStatements(t *testing.T) {
+	g := got.T(t)
+
+	list, err := ToMigrationStatements("", `
+		-- Comment
+		CREATE TABLE test(id INT64);
+
+		CREATE PROPERTY GRAPH SocialGraph
+		NODE TABLES (Person)
+		EDGE TABLES (Knows);
+	`)
+	g.E(err)
+
+	g.Snapshot("list", list)
+}

database/spanner/ddl/format.go

@@ -6,12 +6,18 @@ import (
 )
 
 func ToMigrationStatements(path, ddl string) ([]string, error) {
-	_, err := parser.ParseString(path, ddl)
+	parsed, err := parser.ParseString(path, ddl)
 	if err != nil {
 		return nil, fmt.Errorf("failed to parse DDL: %w", err)
 	}
 
-	return nil, nil
+	list := []string{}
+
+	for _, statement := range parsed.Statements {
+		list = append(list, strings.TrimRight(statement.String(), ";"))
+	}
+
+	return list, nil
 }
 
 func (d *SpannerDDL) String() string {