From 76a8dbfb98562deac52d9f603de4047be701ef77 Mon Sep 17 00:00:00 2001
From: Jakub Vrana <jakub@vrana.cz>
Date: Tue, 27 Jan 2026 10:30:06 +0000
Subject: [PATCH] Support multiline generated values in alter table

---
 CHANGELOG.md                    |  1 +
 adminer/include/editing.inc.php | 13 +++++++++----
 2 files changed, 10 insertions(+), 4 deletions(-)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 2d9ae62e..29183015 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,6 @@
 ## Adminer dev
 - Pretty print JSON in edit
+- Support multiline generated values in alter table
 - PostgreSQL: Offer foreign keys in create table
 - PostgreSQL: Add missing parentheses to CHECK export
 - PostgreSQL: Allow creating NOT DEFERRABLE foreign keys
diff --git a/adminer/include/editing.inc.php b/adminer/include/editing.inc.php
index ddcf7f58..1ffa9829 100644
--- a/adminer/include/editing.inc.php
+++ b/adminer/include/editing.inc.php
@@ -250,15 +250,18 @@ function process_field(array $field, array $type_field): array {
 * @param Field $field
 */
 function default_value(array $field): string {
-	$default = $field["default"];
+	if ($field["default"] === null) {
+		return "";
+	}
+	$default = str_replace("\r", "", $field["default"]);
 	$generated = $field["generated"];
-	return ($default === null ? "" : (in_array($generated, driver()->generated)
+	return (in_array($generated, driver()->generated)
 		? (JUSH == "mssql" ? " AS ($default)" . ($generated == "VIRTUAL" ? "" : " $generated") . "" : " GENERATED ALWAYS AS ($default) $generated")
 		: " DEFAULT " . (!preg_match('~^GENERATED ~i', $default) && (preg_match('~char|binary|text|json|enum|set~', $field["type"]) || preg_match('~^(?![a-z])~i', $default))
 			? (JUSH == "sql" && preg_match('~text|json~', $field["type"]) ? "(" . q($default) . ")" : q($default)) // MySQL requires () around default value of text column
 			: str_ireplace("current_timestamp()", "CURRENT_TIMESTAMP", (JUSH == "sqlite" ? "($default)" : $default))
 		)
-	));
+	);
 }
 
 /** Get type class to use in CSS
@@ -329,7 +332,9 @@ function edit_fields(array $fields, array $collations, $type = "TABLE", array $f
 				? html_select("fields[$i][generated]", array_merge(array("", "DEFAULT"), driver()->generated), $field["generated"]) . " "
 				: checkbox("fields[$i][generated]", 1, $field["generated"], "", "", "", "label-default")
 			);
-			echo "<input name='fields[$i][default]' value='" . h($field["default"]) . "' aria-labelledby='label-default'>";
+			$attrs = " name='fields[$i][default]' aria-labelledby='label-default'";
+			$value = h($field["default"]);
+			echo (preg_match('~\n~', $field["default"]) ? "<textarea$attrs rows='2' cols='30' style='vertical-align: bottom;'>\n$value</textarea>" : "<input$attrs value='$value'>"); // \n to preserve the leading newline
 			echo (support("comment") ? "<td$comment_class><input name='fields[$i][comment]' value='" . h($field["comment"]) . "' data-maxlength='" . (min_version(5.5) ? 1024 : 255) . "' aria-labelledby='label-comment'>" : "");
 		}
 		echo "<td>";