Optimized the database exception to implement unique constraint error detection. (#7194)

Author: huangdijia

src/SQLiteConnection.php

@@ -15,6 +15,7 @@
 use Closure;
 use Doctrine\DBAL\Driver\PDO\SQLite\Driver;
 use Doctrine\DBAL\Driver\PDO\SQLite\Driver as DoctrineDriver;
+use Exception;
 use Hyperf\Database\Connection;
 use Hyperf\Database\Query\Grammars\Grammar as HyperfQueryGrammar;
 use Hyperf\Database\Query\Processors\Processor;
@@ -65,6 +66,16 @@ public function getSchemaBuilder(): SchemaBuilder
         return new SQLiteBuilder($this);
     }
 
+    /**
+     * Determine if the given database exception was caused by a unique constraint violation.
+     *
+     * @return bool
+     */
+    protected function isUniqueConstraintError(Exception $exception)
+    {
+        return boolval(preg_match('#(column(s)? .* (is|are) not unique|UNIQUE constraint failed: .*)#i', $exception->getMessage()));
+    }
+
     /**
      * Get the default query grammar instance.
      *