Issue #3325295 by daffie, Arantxio: Update minumum version for PostgreSQL in code

core/modules/pgsql/src/Driver/Database/pgsql/Insert.php

@@ -140,7 +140,7 @@ public function __toString() {
       $table_information = $this->connection->schema()->queryTableInformation($this->table);
       if (isset($table_information->serial_fields[0])) {
         // Use RETURNING syntax to get the last insert ID in the same INSERT
-        // query, see https://www.postgresql.org/docs/10/dml-returning.html.
+        // query, see https://www.postgresql.org/docs/12/dml-returning.html.
         $query .= ' RETURNING ' . $table_information->serial_fields[0];
       }
     }

core/modules/pgsql/src/Driver/Database/pgsql/Install/Tasks.php

@@ -16,9 +16,9 @@ class Tasks extends InstallTasks {
    *
    * The contrib extension pg_trgm is supposed to be installed.
    *
-   * @see https://www.postgresql.org/docs/10/pgtrgm.html
+   * @see https://www.postgresql.org/docs/12/pgtrgm.html
    */
-  const PGSQL_MINIMUM_VERSION = '10';
+  const PGSQL_MINIMUM_VERSION = '12';
 
   /**
    * {@inheritdoc}

core/modules/pgsql/src/Driver/Database/pgsql/Schema.php

@@ -706,7 +706,7 @@ public function fieldExists($table, $column) {
    * {@inheritdoc}
    */
   public function indexExists($table, $name) {
-    // Details https://www.postgresql.org/docs/10/view-pg-indexes.html
+    // Details https://www.postgresql.org/docs/12/view-pg-indexes.html
     $index_name = $this->ensureIdentifiersLength($table, $name, 'idx');
     // Remove leading and trailing quotes because the index name is in a WHERE
     // clause and not used as an identifier.