- WIP on Migration of MsSQL

src/Adapter/MySQL.php

@@ -181,4 +181,26 @@ class MySQL implements AdapterInterface, MigrateInterface, SqlAdapterInterface {
             ->where($this->escapeIdentifier('table_schema', AdapterInterface::IDENTIFIER_FIELD), $databaseName)
             ->loadOneFromField($this->escapeIdentifier('table_name', AdapterInterface::IDENTIFIER_FIELD), $tableName);
     }
+
+
+    public function generateAlterColumn(FieldDefinition $definition, array $field) : string|\Stringable
+    {
+        if ($field['action'] === 'add') {
+            if (! empty($field['previous'])) {
+                $position = sprintf('AFTER %s', $this->escapeIdentifier($field['previous']->field, AdapterInterface::IDENTIFIER_FIELD));
+            }
+            else {
+                $position = "FIRST";
+            }
+        }
+
+        return implode(" ", array_filter([
+            strtoupper($field['action']),
+            $this->escapeIdentifier($definition->getSqlName(), AdapterInterface::IDENTIFIER_FIELD),
+            $definition->getSqlType(),
+            $definition->getSqlParams(),
+            $position ?? null,
+        ]));
+    }
+
 }