diff --git a/sql/install.sql b/sql/install.sql
index 7b7fa92c..e6929404 100644
--- a/sql/install.sql
+++ b/sql/install.sql
@@ -193,7 +193,7 @@ CREATE TABLE `la_gen_table_column`  (
   `table_id` int(10) UNSIGNED NOT NULL DEFAULT 0 COMMENT '表外键',
   `column_name` varchar(200) CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci NOT NULL DEFAULT '' COMMENT '列名称',
   `column_comment` varchar(200) CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci NOT NULL DEFAULT '' COMMENT '列描述',
-  `column_length` smallint(5) UNSIGNED NULL DEFAULT 0 COMMENT '列长度',
+  `column_length` varchar(100) CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci NOT NULL DEFAULT '' COMMENT '列长度',
   `column_type` varchar(100) CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci NOT NULL DEFAULT '' COMMENT '列类型 ',
   `java_type` varchar(100) CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci NOT NULL DEFAULT '' COMMENT 'JAVA类型',
   `java_field` varchar(100) CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci NOT NULL DEFAULT '' COMMENT 'JAVA字段',