From e0de69b0289678743fcc4428267fde2dcc481e64 Mon Sep 17 00:00:00 2001
From: Shlomi Noach <shlomi-noach@github.com>
Date: Wed, 22 Jun 2016 12:39:13 +0200
Subject: [PATCH] a noop operation dumps SHOW CREATE TABLE

---
 go/logic/inspect.go  |  8 ++++++++
 go/logic/migrator.go | 10 ++++++++++
 2 files changed, 18 insertions(+)

diff --git a/go/logic/inspect.go b/go/logic/inspect.go
index 4edafcc..81ee528 100644
--- a/go/logic/inspect.go
+++ b/go/logic/inspect.go
@@ -516,6 +516,14 @@ func (this *Inspector) getSharedColumns(originalColumns, ghostColumns *sql.Colum
 	return sql.NewColumnList(sharedColumnNames), sql.NewColumnList(mappedSharedColumnNames)
 }
 
+// showCreateTable returns the `show create table` statement for given table
+func (this *Inspector) showCreateTable(tableName string) (createTableStatement string, err error) {
+	var dummy string
+	query := fmt.Sprintf(`show /* gh-ost */ create table %s.%s`, sql.EscapeName(this.migrationContext.DatabaseName), sql.EscapeName(tableName))
+	err = this.db.QueryRow(query).Scan(&dummy, &createTableStatement)
+	return createTableStatement, err
+}
+
 // readChangelogState reads changelog hints
 func (this *Inspector) readChangelogState() (map[string]string, error) {
 	query := fmt.Sprintf(`
diff --git a/go/logic/migrator.go b/go/logic/migrator.go
index 1c103f0..dbfdbea 100644
--- a/go/logic/migrator.go
+++ b/go/logic/migrator.go
@@ -1173,6 +1173,16 @@ func (this *Migrator) executeWriteFuncs() error {
 // finalCleanup takes actions at very end of migration, dropping tables etc.
 func (this *Migrator) finalCleanup() error {
 	atomic.StoreInt64(&this.cleanupImminentFlag, 1)
+
+	if this.migrationContext.Noop {
+		if createTableStatement, err := this.inspector.showCreateTable(this.migrationContext.GetGhostTableName()); err == nil {
+			log.Infof("New table structure follows")
+			fmt.Println(createTableStatement)
+		} else {
+			log.Errore(err)
+		}
+	}
+
 	if err := this.retryOperation(this.applier.DropChangelogTable); err != nil {
 		return err
 	}