diff --git a/sql/mysql/gen.sql b/sql/mysql/gen.sql
index e5e4eca..32de084 100644
--- a/sql/mysql/gen.sql
+++ b/sql/mysql/gen.sql
@@ -5,8 +5,8 @@
 DROP TABLE IF EXISTS `gen_table`;
 CREATE TABLE `gen_table`  (
   `table_id`            bigint(20)      NOT NULL AUTO_INCREMENT COMMENT '编号',
-  `table_name`          varchar(200)    DEFAULT ''  COMMENT '表名称',
-  `table_alias`          varchar(200)    DEFAULT ''  COMMENT '表名称',
+  `table_name`          varchar(200)    NOT NULL  COMMENT '表名称',
+  `table_alias`          varchar(200)    NOT NULL  COMMENT '表别名',
   `table_comment`       varchar(500)    DEFAULT ''  COMMENT '表描述',
   `have_sub_column`     char(1)         DEFAULT '0' COMMENT '是否含有关联字段',
   `sub_table_name`      varchar(64)     DEFAULT NULL COMMENT '关联子表的表名',
@@ -70,17 +70,17 @@ CREATE TABLE `gen_table_column`  (
 
 DROP TABLE IF EXISTS `gen_join_table`;
 CREATE TABLE `gen_join_table` (
-  `table_id`         bigint NOT NULL COMMENT '表编号',
-  `left_table_id`  bigint  NOT NULL COMMENT '主表名称',
-  `right_table_id`    bigint NOT NULL COMMENT '关联表编号',
-  `left_table_alias` varchar(200) NOT NULL COMMENT '主表别名',
-  `right_table_alias` varchar(200) NOT NULL COMMENT '关联表别名',
-  `left_table_fk` varchar(200) NOT NULL COMMENT '主表别名',
-  `right_table_fk` varchar(200) NOT NULL COMMENT '关联表别名',
-  `join_type` varchar(200) NOT NULL COMMENT '关联类型',
-  `join_columns` varchar(500) DEFAULT '' COMMENT '关联字段',
-  `order_num` varchar(64) NOT NULL COMMENT '序号',
-  `new_table_id` bigint NOT NULL COMMENT '新表编号',
+  `table_id`          bigint       NOT NULL   COMMENT '表编号',
+  `left_table_id`     bigint       NOT NULL   COMMENT '左表名称',
+  `right_table_id`    bigint       NOT NULL   COMMENT '右表编号',
+  `left_table_alias`  varchar(200) NOT NULL   COMMENT '左表别名',
+  `right_table_alias` varchar(200) NOT NULL   COMMENT '右表别名',
+  `left_table_fk`     varchar(200) NOT NULL   COMMENT '左表关联键',
+  `right_table_fk`    varchar(200) NOT NULL   COMMENT '右表关联键',
+  `join_type`         varchar(200) NOT NULL   COMMENT '关联类型',
+  `join_columns`      varchar(500) DEFAULT '' COMMENT '关联字段',
+  `order_num`         varchar(64)  NOT NULL   COMMENT '序号',
+  `new_table_id`      bigint       NOT NULL   COMMENT '新表编号',
   PRIMARY KEY (`table_id`,`right_table_id`,`left_table_id`)
 ) ENGINE = InnoDB AUTO_INCREMENT = 1 COMMENT = '代码生成关联表';
 
diff --git a/sql/postgresql/gen.sql b/sql/postgresql/gen.sql
index b0670c0..0061688 100644
--- a/sql/postgresql/gen.sql
+++ b/sql/postgresql/gen.sql
@@ -5,7 +5,8 @@ DROP TABLE IF EXISTS gen_table;
 CREATE TABLE gen_table (
   table_id            bigserial PRIMARY KEY,
   table_name          varchar(200)    DEFAULT '' ,
-  table_comment       varchar(500)    DEFAULT '' ,
+  table_comment       varchar(500)    NOT NULL ,
+  table_alias         varchar(200)    NOT NULL ,
   have_sub_column     char(1)         DEFAULT '0',
   sub_table_name      varchar(64)     DEFAULT NULL,
   sub_table_fk_name   varchar(64)     DEFAULT NULL,
@@ -30,6 +31,7 @@ CREATE TABLE gen_table (
 COMMENT ON TABLE gen_table IS '代码生成业务表';
 COMMENT ON COLUMN gen_table.table_id IS '编号';
 COMMENT ON COLUMN gen_table.table_name IS '表名称';
+COMMENT ON COLUMN gen_table.table_alias IS '表别名';
 COMMENT ON COLUMN gen_table.table_comment IS '表描述';
 COMMENT ON COLUMN gen_table.have_sub_column IS '是否含有关联字段';
 COMMENT ON COLUMN gen_table.sub_table_name IS '关联子表的表名';
@@ -114,6 +116,35 @@ COMMENT ON COLUMN gen_table_column.create_time IS '创建时间';
 COMMENT ON COLUMN gen_table_column.update_by IS '更新者';
 COMMENT ON COLUMN gen_table_column.update_time IS '更新时间';
 
+DROP TABLE IF EXISTS gen_join_table;
+CREATE TABLE gen_join_table (
+  table_id            bigserial,
+  left_table_id       bigint          DEFAULT NULL,
+  right_table_id      bigint          DEFAULT NULL,
+  left_table_alias    varchar(200)    DEFAULT NULL,
+  right_table_alias   varchar(200)    DEFAULT NULL,
+  left_table_fk       varchar(200)    DEFAULT NULL,
+  right_table_fk      varchar(200)    DEFAULT NULL,
+  join_type           varchar(200)    DEFAULT NULL,
+  join_columns        varchar(500)    DEFAULT NULL,
+  order_num           varchar(64)     DEFAULT NULL,
+  new_table_id        bigint          DEFAULT NULL,
+  PRIMARY KEY (table_id, right_table_id, left_table_id)
+);
+
+COMMENT ON TABLE gen_table_column IS '代码生成关联表';
+COMMENT ON COLUMN gen_table_column.table_id IS '表编号';
+COMMENT ON COLUMN gen_table_column.left_table_id IS '左表名称';
+COMMENT ON COLUMN gen_table_column.right_table_id IS '右表编号';
+COMMENT ON COLUMN gen_table_column.left_table_alias IS '左表别名';
+COMMENT ON COLUMN gen_table_column.right_table_alias IS '右表别名';
+COMMENT ON COLUMN gen_table_column.left_table_fk IS '左表关联键';
+COMMENT ON COLUMN gen_table_column.right_table_fk IS '右表关联键';
+COMMENT ON COLUMN gen_table_column.join_type IS '关联类型';
+COMMENT ON COLUMN gen_table_column.join_columns IS '关联字段';
+COMMENT ON COLUMN gen_table_column.order_num IS '序号';
+COMMENT ON COLUMN gen_table_column.new_table_id IS '新表编号';
+
 -- 插入菜单数据
 INSERT INTO sys_menu (menu_id, menu_name, parent_id, order_num, path, component, route_name, is_frame, is_cache, menu_type, visible, status, perms, icon, create_by, create_time, update_by, update_time, remark)
 VALUES (116, '代码生成', 3, 2, 'gen', 'tool/gen/index', '', 1, 0, 'C', '0', '0', 'tool:gen:list', 'code', 'admin', CURRENT_TIMESTAMP, '', NULL, '代码生成菜单');