Database Schema Design and Modeling Tool
Design Database Schema Without Writing SQL
This project provides a mapping between specific symbols and corresponding data definition language (DDL) concepts. This mapping is intended to be used for parsing and converting data in various scenarios, such as databases, data analysis, and programming language parsing.
Features:
The mapping is defined as follows:
$ ; schema
# ; table
% ; template
... ; slot
+ ; AUTO_INCREMENT, DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP
! ; PRIMARY KEY
++ ; AUTO_INCREMENT PRIMARY KEY
= ; DEFAULT# user / TABLE OF USER ; define a `user` table with comment 'TABLE OF USER'
id n++ / id of user
name / name of user
password s100 / password of user
avatar S / avatar of user
balance m / balance of user
version N =0 / version of record
status 1 =0 / status of record
delete_at t / delete time of record
create_at t= / create time of record
update_at t+ / update time of recordCREATE TABLE `user` (
`id` int AUTO_INCREMENT PRIMARY KEY COMMENT 'id of user',
`name` varchar(255) COMMENT 'name of user',
`password` varchar(100) COMMENT 'password of user',
`avatar` text COMMENT 'avatar of user',
`balance` decimal(16, 2) COMMENT 'balance of user',
`version` bigint DEFAULT 0 COMMENT 'version of record',
`status` int(1) DEFAULT 0 COMMENT 'status of record',
`delete_at` datetime COMMENT 'delete time of record',
`create_at` datetime DEFAULT CURRENT_TIMESTAMP COMMENT 'create time of record',
`update_at` datetime DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP COMMENT 'update time of record',
COMMENT = 'TABLE OF USER'
)| Mark | MySQL |
|---|---|
$ |
schema name |
(?<=\n|^)
(?:\$\s*)
(?:\w+) ; schema name
(?:\s*)
(?:--\s*(?:.*)(?=\n|$))? ; sql comment
(?:\n)$ democreate DATABASE `demo`| Mark | MySQL |
|---|---|
# |
table name |
(?<=\n|^)
(?:\#)
\s*
(?:\w+) ; table name
\s*
(?://\s*(?:.*?))? ; table comment
(?:--\s*(?:.*)(?=\n|$))? ; sql comment
(?:\n)# user
CREATE TABLE `user` (
)(?<=\n)
(?:\w+) ; name
\s*
(?:[nNmMtS]|\d+(?:,\d+)?|s(?:\d+)?) ; types
\s*
(?:=\s*\w*)? ; default
\s*
(?:[+|++])? ; auto increment, auto increment primary key
\s*
(?:!)? ; primary key
\s*
(?://.*?) ; table comment
(?:--.*) ; sql comment
(?:;.*) ; spec comment
\nReferenced the Type Spec project.
| Mark | Type |
|---|---|
n |
int |
N |
bigint |
m |
decimal(16, 2) |
M |
decimal(20, 6) |
\d+ |
int(\d+) |
\d*\,\d+ |
decimal(\d+, \d+) |
user.dbs
# user
id n
version N
status 1
balance m
balance6 M
balancex 16,6
user.sql
CREATE TABLE `user` (
`id` int,
`version` bigint,
`status` int(1),
`balance` decimal(16, 2),
`balance6` decimal(20, 6),
`balancex` decimal(16, 6)
)| Mark | Type |
|---|---|
| varchar | |
s\d+ |
varchar(\d+) |
S |
text |
user.dbs
# user
name
password s100
avatar S
user.sql
CREATE TABLE `user` (
`name` varchar(255),
`password` varchar(100),
`avatar` text
)| Mark | Type |
|---|---|
t |
datetime |
d |
date |
user.dbs
# user
vip_at d
register_at d =
login_at d +
delete_at t
create_at t=
update_at t+
user.sql
CREATE TABLE `user` (
`delete_at` datetime,
`create_at` datetime DEFAULT CURRENT_TIMESTAMP,
`update_at` datetime DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
)| Mark | MySQL |
|---|---|
n +, N +, \d+ + |
AUTO_INCREMENT |
++ |
AUTO_INCREMENT PRIMARY KEY |
t +, d + |
DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP |
user.dbs
# user
id n ++
update_at t+
user.sql
CREATE TABLE `user` (
`id` int AUTO_INCREMENT PRIMARY KEY
`update_at` datetime DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
)| Mark | MySQL |
|---|---|
! |
PRIMARY KEY |
user.dbs
# user
id n !
user.sql
CREATE TABLE `user` (
`id` int PRIMARY KEY
)| Mark | MySQL |
|---|---|
= |
DEFAULT |
t =, d =, |
DEFAULT CURRENT_TIMESTAMP |
user.dbs
# user
status 1 =1
user.sql
CREATE TABLE `user` (
`status` int(1) DEFAULT 1
)| Mark | MySQL |
|---|---|
/ |
table or column COMMENT |
; |
spec comment |
-- |
sql comment |
user.dbs
# user // TABLE OF USER -- define a `user` table
status 1 =1 // [0,1] -- define a `status` column, type is int(1), comment is '[0,1]'
user.sql
CREATE TABLE `user` ( -- define a `user` table
`status` int(1) DEFAULT 1 COMMENT '[0,1]', -- define a `status` column, type is int(1), comment is '[0,1]'
COMMENT = 'TABLE OF USER'
)| Mark | MySQL |
|---|---|
% |
template name. default name is empty. |
... |
slot. default slot is at the end of the template. |
template.dbs
%
id n++
... -- Here is a slot
version N
status 1
delete_at t
create_at t =
update_at t +
user.dbs
# user // TABLE OF USER
name
password s100
avatar S
balance m
user.sql
CREATE TABLE `user` (
`id` int AUTO_INCREMENT PRIMARY KEY,
`name` varchar(255),
`password` varchar(100),
`avatar` text,
`balance` decimal(16, 2),
`version` bigint DEFAULT 0,
`status` int(1) DEFAULT 0 COMMENT '[0,1]',
`delete_at` datetime,
`create_at` datetime DEFAULT CURRENT_TIMESTAMP,
`update_at` datetime DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
COMMENT = 'TABLE OF USER'
)all.spec
%1
id n++
#1 user -- define a `user` table using template named `1`
name
all.sql
CREATE TABLE `user` (
`id` int AUTO_INCREMENT PRIMARY KEY,
`name` varchar(255)
)Copyright (c) 2023-present, Ronghai Ma
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