diff --git a/更新最新编号sql.sql b/更新最新编号sql.sql
new file mode 100644
index 0000000..53f1403
--- /dev/null
+++ b/更新最新编号sql.sql
@@ -0,0 +1,17 @@
+UPDATE uf_GCLXXX
+SET gcbhz = 
+    '[GC-' || 
+    SUBSTR('{?djrq}', 1, 4) || 
+    '/' || 
+    (
+        SELECT 
+            -- 提取当前年份下的最大序号，若没有则从1开始
+            NVL(MAX(TO_NUMBER(REGEXP_SUBSTR(gcbhz, '\d+', 1, 2))), 0) + 1
+        FROM uf_gcxx
+        WHERE 
+            -- 提取年份部分进行匹配
+            REGEXP_SUBSTR(gcbhz, '\d{4}', 1, 1) = SUBSTR('{?djrq}', 1, 4)
+    ) || 
+    ']' from uf_GCLXXX
+WHERE 
+    xglc = '{?requestid}';
\ No newline at end of file