Issue #3143618 by Krzysztof Domański, daffie, longwave, Beakerboy: Replace space (U+0020) with No-Break Space (U+00A0) to minimize false positives

core/lib/Drupal/Core/Database/Connection.php

@@ -726,7 +726,7 @@ abstract class Connection {
         // semicolons should only be needed for special cases like defining a
         // function or stored procedure in SQL. Trim any trailing delimiter to
         // minimize false positives unless delimiter is allowed.
-        $trim_chars = "  \t\n\r\0\x0B";
+        $trim_chars = " \xA0\t\n\r\0\x0B";
         if (empty($options['allow_delimiter_in_query'])) {
           $trim_chars .= ';';
         }

core/tests/Drupal/Tests/Core/Database/ConnectionTest.php

@@ -607,6 +607,16 @@ class ConnectionTest extends UnitTestCase {
    */
   public function provideQueriesToTrim() {
     return [
+      'remove_non_breaking_space' => [
+        'SELECT * FROM test',
+        "SELECT * FROM test\xA0",
+        [],
+      ],
+      'remove_ordinary_space' => [
+        'SELECT * FROM test',
+        'SELECT * FROM test ',
+        [],
+      ],
       'remove_semicolon' => [
         'SELECT * FROM test',
         'SELECT * FROM test;',