test: add test case

tests/pytest/stable/insert.py

@@ -96,6 +96,23 @@ class TDTestCase:
         tdSql.execute("drop stable if exists db.st")        
         tdSql.execute("create table stb(ts timestamp, c1 int) tags(t1 int)")
         tdSql.error("create table `` using stb tags(1)")
+
+        # TS-1760
+        sql = "create table stb9 (ts timestamp"
+        for i in range(999):
+            sql += ", longcolumntest%d double" % i
+        sql += ") tags(t1 int)"
+
+        tdSql.execute(sql)
+        tdSql.query("describe stb9")
+        tdSql.checkRows(1001)        
+        tdSql.query("show create table stb9")
+        query = tdSql.getData(0, 1)
+        
+        tdSql.execute("drop table if exists stb9")
+        tdSql.execute(query)
+        tdSql.query("describe stb9")
+        tdSql.checkRows(1001)
         
     def stop(self):
         tdSql.close()