Merge pull request #15865 from cakephp/backport-15859

Reset ident only if values were generated
cakephp · Sep 9, 2021 · 0c79d3f · 0c79d3f
2 parents e071530 + 67fa534
commit 0c79d3f
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Showing 2 changed files with 8 additions and 2 deletions.
diff --git a/src/Database/Schema/SqlserverSchemaDialect.php b/src/Database/Schema/SqlserverSchemaDialect.php
@@ -649,7 +649,9 @@ public function truncateTableSql(TableSchema $schema): array
             $column = $schema->getColumn($pk[0]);
             if (in_array($column['type'], ['integer', 'biginteger'])) {
                 $queries[] = sprintf(
-                    "DBCC CHECKIDENT('%s', RESEED, 0)",
+                    "IF EXISTS (SELECT * FROM sys.identity_columns WHERE OBJECT_NAME(OBJECT_ID) = '%s' AND " .
+                    "last_value IS NOT NULL) DBCC CHECKIDENT('%s', RESEED, 0)",
+                    $schema->name(),
                     $schema->name()
                 );
             }

diff --git a/tests/TestCase/Database/Schema/SqlserverSchemaTest.php b/tests/TestCase/Database/Schema/SqlserverSchemaTest.php
@@ -1125,7 +1125,11 @@ public function testTruncateSql()
         $result = $table->truncateSql($connection);
         $this->assertCount(2, $result);
         $this->assertSame('DELETE FROM [schema_articles]', $result[0]);
-        $this->assertSame("DBCC CHECKIDENT('schema_articles', RESEED, 0)", $result[1]);
+        $this->assertSame(
+            "IF EXISTS (SELECT * FROM sys.identity_columns WHERE OBJECT_NAME(OBJECT_ID) = 'schema_articles' AND last_value IS NOT NULL) " .
+            "DBCC CHECKIDENT('schema_articles', RESEED, 0)",
+            $result[1]
+        );
     }
 
     /**