first commit

server/sql/1.9.20260810/add_qywx_active_contact_lookup_index.sql

@@ -0,0 +1,19 @@
+-- 当前企微标签目录需要按 external_userid 判断客户是否仍有效。
+-- 覆盖 external_userid + delete_time，避免标签聚合逐条回表读取体积较大的客户 JSON 数据。
+SET @idx_external_delete_exists := (
+    SELECT COUNT(*)
+    FROM information_schema.STATISTICS
+    WHERE TABLE_SCHEMA = DATABASE()
+      AND TABLE_NAME = 'zyt_qywx_external_contact'
+      AND INDEX_NAME = 'idx_external_delete'
+);
+
+SET @add_idx_external_delete_sql := IF(
+    @idx_external_delete_exists = 0,
+    'ALTER TABLE `zyt_qywx_external_contact` ADD INDEX `idx_external_delete` (`external_userid`, `delete_time`)',
+    'SELECT 1'
+);
+
+PREPARE add_idx_external_delete_stmt FROM @add_idx_external_delete_sql;
+EXECUTE add_idx_external_delete_stmt;
+DEALLOCATE PREPARE add_idx_external_delete_stmt;