feat: SQL 语法支持 BETWEEN AND、DROP TABLE IF EXISTS

2026-07-26 17:55:45 +08:00
parent 287f2a2b22
commit 1f8e11bf72
14 changed files with 181 additions and 13 deletions
@@ -234,6 +234,10 @@ export class QueryExecutor {
  }

  private async executeDropTable(stmt: DropTableStatement): Promise<void> {
+    if (stmt.ifExists) {
+      const exists = await this.engine.hasTable(stmt.name);
+      if (!exists) return; // IF EXISTS: 表不存在时静默返回
+    }
    return this.engine.dropTable(stmt.name);
  }