将MySQL架构转换为Github Wiki？
我正在使用GitHub Wiki页面记录项目，现在我想将MySQL数据库模式导出为markdown格式。有没有办法将CLI输出转换为GitHub Wiki md？理想情况下是表格。
我的输出如下：
2 个答案:
答案 0 :(得分：9)
此代码相当长。我道歉。它由两个存储过程组成。你可能会对第一个运行感到满意。第二个使用第一个输出（表中第一个左边的数据）。您可能还希望将代码合并为一个。但我把它们分开了。第二个存储过程产生的输出类似于describe myTable。但它会为您希望输出的数据库中的 ALL 表执行此操作。
您可以通过传递数据库的参数（字符串）来报告。
我创建了一个单独的数据库，代码通过名称显式引用该数据库中的表。因此，如果您对此存储过程具有EXECUTE权限，则可以从任何当前数据库运行它。因此，作为一个简单的测试，不要将报告数据库设置为当前数据库，只需按名称调用存储过程（使用报告数据库名称限定）。这一切都显示在下面的测试块中。
两个存储过程
CREATE SCHEMA Reporting101a; -- See **Note1**
DROP PROCEDURE IF EXISTS `Reporting101a`.`describeTables_v2a`;
DELIMITER $$
CREATE DEFINER=`root`@`localhost` PROCEDURE `Reporting101a`.`describeTables_v2a`(
IN dbName varchar(100), -- the dbname to report table structures
OUT theSession int, -- OUT parameter for session# assigned
IN deleteSessionRows BOOL, -- true for delete rows when done from main reporting table for this session#
IN callTheSecondStoredProc BOOL -- TRUE = output is from Pretty output in Second Stored Proc. FALSE= not so pretty output
)
BEGIN
DECLARE thisTable CHAR(100);
DROP TEMPORARY TABLE IF EXISTS Reporting101a.tOutput;
CREATE TEMPORARY TABLE Reporting101a.tOutput
( id int auto_increment primary key,
tblName varchar(100) not null,
ordVal int not null,
cField varchar(100) not null,
cType varchar(100) not null,
cNull varchar(100) not null,
cKey varchar(100) not null,
cDefault varchar(100) null,
cExtra varchar(100) null
);
DROP TEMPORARY TABLE IF EXISTS Reporting101a.tOutput2;
CREATE TEMPORARY TABLE Reporting101a.tOutput2
( tblName varchar(100) primary key,
colCount int not null,
cFieldMaxLen int not null,
cTypeMaxLen int not null,
cNullMaxLen int not null,
cKeyMaxLen int not null,
cDefaultMaxLen int not null,
cExtraMaxLen int not null
);
INSERT Reporting101a.tOutput(tblName,ordVal,cField,cType,cNull,cKey,cDefault,cExtra)
SELECT TABLE_NAME,ORDINAL_POSITION,COLUMN_NAME AS Field, COLUMN_TYPE AS TYPE, RPAD(IS_NULLABLE,4,' ') AS 'Null',
RPAD(COLUMN_KEY,3,' ') AS 'Key',RPAD(COLUMN_DEFAULT,7,' ') AS 'DEFAULT',EXTRA AS Extra
FROM information_schema.columns WHERE table_schema = dbName ORDER BY table_name,ordinal_position;
-- select * from information_schema.columns WHERE table_schema = '57security' order by table_name,ordinal_position;
UPDATE Reporting101a.tOutput
SET cExtra=' '
WHERE cExtra='';
UPDATE Reporting101a.tOutput
SET cField=RPAD(cField,5,' ')
WHERE LENGTH(cField)<5;
INSERT Reporting101a.tOutput2(tblName,colCount,cFieldMaxLen,cTypeMaxLen,cNullMaxLen,cKeyMaxLen,cDefaultMaxLen,cExtraMaxLen)
SELECT tblName,COUNT(*),0,0,0,0,0,0
FROM Reporting101a.tOutput
GROUP BY tblName;
UPDATE tOutput2 t2
JOIN
( SELECT tblName,MAX(LENGTH(cField)) AS mField,MAX(LENGTH(cType)) AS mType,MAX(LENGTH(cNull)) AS mNull,
IFNULL(MAX(LENGTH(cKey)),0) AS mKey,IFNULL(MAX(LENGTH(cDefault)),0) AS mDefault,IFNULL(MAX(LENGTH(cExtra)),0) AS mExtra
FROM Reporting101a.tOutput
GROUP BY tblName
) x
ON x.tblName=t2.tblName
SET t2.cFieldMaxLen=x.mField,t2.cTypeMaxLen=x.mType,cNullMaxLen=x.mNull,
cKeyMaxLen=x.mKey,cDefaultMaxLen=x.mDefault,cExtraMaxLen=x.mExtra;
-- DROP TABLE Reporting101a.reportDataDefsSession; -- useful for quick change of structure of table
-- note, keep above drop call remmed out ! Just use it for quick tweaks to structure
CREATE TABLE IF NOT EXISTS Reporting101a.reportDataDefsSession
( -- for the sole purpose of safe session auto_inc usage
-- Please don't delete unless you want the sessions to experience aberant behavior
sessionId INT AUTO_INCREMENT PRIMARY KEY,
dummy CHAR(1) NOT NULL,
creationDT datetime not null
);
CREATE TABLE IF NOT EXISTS Reporting101a.reportDataDefs
( sessionId INT NOT NULL,
tblName VARCHAR(100) NOT NULL, -- Tablename
ordVal INT NOT NULL, -- the "position number" of the Column
cField VARCHAR(100) NOT NULL, -- The Column
cType VARCHAR(100) NOT NULL, -- Datatype
cNull VARCHAR(100) NOT NULL, -- Nullability
cKey VARCHAR(100) NOT NULL, -- Key info
cDefault VARCHAR(100) NULL, -- Default value
cExtra VARCHAR(100) NULL, -- Extra output
colCount INT NOT NULL, -- the columns here and below are de-normalize data
cFieldMaxLen INT NOT NULL,
cTypeMaxLen INT NOT NULL,
cNullMaxLen INT NOT NULL,
cKeyMaxLen INT NOT NULL,
cDefaultMaxLen INT NOT NULL,
cExtraMaxLen INT NOT NULL
);
-- For lack of a better notion, we are calling calls "sessions". The programmer calls the
-- First Stored Proc, and we call that a session after we get a unique next incrementing number.
-- That number is the session #. House all output with that as a column value. This allows us to
-- move between stored procs, have safe output, have historical snapshots, and retain the data
-- via a session # for later use, whatever use.
INSERT Reporting101a.reportDataDefsSession(dummy,creationDT) VALUES ('X',now());
SET @mySession=LAST_INSERT_ID(); -- there it is, our session # (read the above paragraph)
INSERT Reporting101a.reportDataDefs(sessionId,tblName,ordVal,cField,cType,cNull,cKey,cDefault,cExtra,
colCount,cFieldMaxLen,cTypeMaxLen,cNullMaxLen,cKeyMaxLen,cDefaultMaxLen,cExtraMaxLen)
SELECT @mySession,t1.tblName,t1.ordVal,t1.cField,t1.cType,t1.cNull,t1.cKey,t1.cDefault,t1.cExtra,
t2.colCount,t2.cFieldMaxLen,t2.cTypeMaxLen,t2.cNullMaxLen,t2.cKeyMaxLen,t2.cDefaultMaxLen,t2.cExtraMaxLen
FROM Reporting101a.tOutput t1
JOIN Reporting101a.tOutput2 t2
ON t2.tblName=t1.tblName
ORDER BY t1.tblName,t1.id;
DROP TEMPORARY TABLE Reporting101a.tOutput;
DROP TEMPORARY TABLE Reporting101a.tOutput2;
SET theSession=@mySession; -- the OUT var that came in as a parameter
-- ***************************************************************************
-- ***************************************************************************
-- Label "Some_Sort_of_Output":
IF callTheSecondStoredProc=TRUE THEN
-- The caller says to call the second stored proc (for Pretty Printing)
-- This will generate output similar to `DESCRIBE myTable`
-- But remember, it will do it for EVERY table in referenced database
CALL Reporting101a.`Print_Tables_Like_Describe`(@mySession);
-- The above call just gave you output.
ELSE
-- The caller chose to not auto call the Pretty Printing second stored procedure.
-- Note, the caller can easily call it right after using the OUT parameter.
-- So our output will be a resultset of out reportDataDefs table for this session #
SELECT *
FROM Reporting101a.reportDataDefs
WHERE sessionId=@mySession
ORDER BY tblName,ordVal;
END IF;
-- ***************************************************************************
-- ***************************************************************************
IF deleteSessionRows=TRUE THEN
-- The caller says output rows are NOT needed at this point. Delete them.
-- Note, if this boolean comes in TRUE, you can't call Pretty Printing
-- second stored procedure with the session # because the data is gone.
--
-- Regardless, you are getting something back from "Some_Sort_of_Output" above.
DELETE FROM Reporting101a.reportDataDefs
WHERE sessionId=@mySession;
END IF;
END$$
DELIMITER ;
DROP PROCEDURE IF EXISTS `Reporting101a`.`Print_Tables_Like_Describe`;
DELIMITER $$
CREATE DEFINER=`root`@`localhost` PROCEDURE `Reporting101a`.`Print_Tables_Like_Describe`(
pSessionId INT
)
BEGIN
DECLARE done INT DEFAULT FALSE;
DECLARE curTable VARCHAR(100) DEFAULT '';
DECLARE bFirst BOOL DEFAULT TRUE;
DECLARE lv_tblName,lv_cField,lv_cType,lv_cNull,lv_cKey,lv_cDefault,lv_cExtra VARCHAR(100);
DECLARE lv_ordVal,lv_colCount,lv_cFieldMaxLen,lv_cTypeMaxLen,lv_cNullMaxLen,lv_cKeyMaxLen,lv_cDefaultMaxLen,lv_cExtraMaxLen INT;
DECLARE cur1 CURSOR FOR SELECT tblName,ordVal,cField,cType,cNull,cKey,cDefault,cExtra,
colCount,cFieldMaxLen,cTypeMaxLen,cNullMaxLen,cKeyMaxLen,cDefaultMaxLen,cExtraMaxLen
FROM Reporting101a.reportDataDefs
WHERE sessionId=pSessionId
ORDER BY tblName,ordVal;
DECLARE CONTINUE HANDLER FOR NOT FOUND SET done = TRUE;
-- Please note in the above, CURSOR stuff must come last else "Error 1337: Variable or condition decl aft curs"
CREATE TABLE IF NOT EXISTS Reporting101a.reportOutput
( lineNum INT AUTO_INCREMENT PRIMARY KEY,
sessionId INT NOT NULL,
lineOut varchar(100) NOT NULL
);
-- INSERT Reporting101a.reportOutput(sessionId,lineOut)
-- SELECT
-- SET curTable='';
DELETE FROM Reporting101a.reportOutput
WHERE sessionId=pSessionId;
OPEN cur1;
read_loop: LOOP
FETCH cur1 INTO lv_tblName,lv_ordVal,lv_cField,lv_cType,lv_cNull,lv_cKey,lv_cDefault,lv_cExtra,
lv_colCount,lv_cFieldMaxLen,lv_cTypeMaxLen,lv_cNullMaxLen,lv_cKeyMaxLen,lv_cDefaultMaxLen,lv_cExtraMaxLen ;
IF done THEN
LEAVE read_loop;
END IF;
IF lv_tblName<>curTable THEN
IF bFirst=FALSE THEN
INSERT Reporting101a.reportOutput(sessionId,lineOut)
SELECT pSessionId,'';
ELSE
SET bFirst=FALSE;
END IF;
INSERT Reporting101a.reportOutput(sessionId,lineOut)
SELECT pSessionId,lv_tblName;
INSERT Reporting101a.reportOutput(sessionId,lineOut)
SELECT pSessionId,CONCAT('+-',
REPEAT('-',GREATEST(5,lv_cFieldMaxLen)), '-+-',
REPEAT('-',GREATEST(4,lv_cTypeMaxLen)), '-+-',
REPEAT('-',GREATEST(4,lv_cNullMaxLen)), '-+-',
REPEAT('-',GREATEST(3,lv_cKeyMaxLen)), '-+-',
REPEAT('-',GREATEST(7,lv_cDefaultMaxLen)), '-+-',
REPEAT('-',GREATEST(5,lv_cExtraMaxLen)), '-+');
SET @dashLineNumRow=LAST_INSERT_ID();
INSERT Reporting101a.reportOutput(sessionId,lineOut)
SELECT pSessionId,CONCAT('| ',
'Field',
REPEAT(' ',GREATEST(0,lv_cFieldMaxLen-5)), ' | ',
'Type',
REPEAT(' ',GREATEST(0,lv_cTypeMaxLen-4)), ' | ',
'Null',
REPEAT(' ',GREATEST(0,lv_cNullMaxLen-4)), ' | ',
'Key',
REPEAT(' ',GREATEST(0,lv_cKeyMaxLen-3)), ' | ',
'Default',
REPEAT(' ',GREATEST(0,lv_cDefaultMaxLen-7)), ' | ',
'Extra',
REPEAT(' ',GREATEST(0,lv_cExtraMaxLen-5)), ' |');
INSERT Reporting101a.reportOutput(sessionId,lineOut)
SELECT pSessionId,lineOut
FROM Reporting101a.reportOutput
WHERE lineNum=@dashLineNumRow;
-- SELECT * FROM Reporting101a.reportDataDefs WHERE sessionId=24;
SET curTable=lv_tblName;
END IF;
INSERT Reporting101a.reportOutput(sessionId,lineOut)
SELECT pSessionId,
CONCAT('| ',
COALESCE(lv_cField,''),
COALESCE(REPEAT(' ',GREATEST(0,lv_cFieldMaxLen-LENGTH(lv_cField))),''),' | ',
COALESCE(lv_cType,''),
COALESCE(REPEAT(' ',GREATEST(0,lv_cTypeMaxLen-LENGTH(lv_cType))),''),' | ',
COALESCE(lv_cNull,''),
COALESCE(REPEAT(' ',GREATEST(0,lv_cNullMaxLen-LENGTH(lv_cNull))),''),' | ',
COALESCE(lv_cKey,' '),
COALESCE(REPEAT(' ',GREATEST(0,lv_cKeyMaxLen-LENGTH(lv_cKey))),''),' | ',
COALESCE(lv_cDefault,' '),
COALESCE(REPEAT(' ',GREATEST(0,lv_cDefaultMaxLen-LENGTH(lv_cDefault))),''),' | ',
COALESCE(lv_cExtra,' '),
COALESCE(REPEAT(' ',GREATEST(0,lv_cExtraMaxLen-LENGTH(lv_cExtra))),''),' |');
INSERT Reporting101a.reportOutput(sessionId,lineOut)
SELECT pSessionId,lineOut
FROM Reporting101a.reportOutput
WHERE lineNum=@dashLineNumRow;
END LOOP;
CLOSE cur1;
select lineOut as '' from Reporting101a.reportOutput where sessionId=pSessionId order by lineNum;
END$$
DELIMITER ;
测试
测试：
-- See **Note2**
SET @theOutVar =-1; -- A variable used as the OUT variable below
-- See **Note3**
-- Note: with `TRUE` as the 4th parameter, this is a one call deal. Meaning, you are done.
call Reporting101a.describeTables_v2a('stackoverflow',@theOutVar,false,true);
-- See **Note4**
-- Primarily used if the 4th parameter above is false
call Reporting101a.Print_Tables_Like_Describe(@theOutVar); -- loads data for prettier results in chunk format.
输出
+--------------------------------------------------------------------------------------------+
| |
+--------------------------------------------------------------------------------------------+
| course |
| +------------+--------------+------+-----+---------+----------------+ |
| | Field | Type | Null | Key | Default | Extra | |
| +------------+--------------+------+-----+---------+----------------+ |
| | courseId | int(11) | NO | PRI | | auto_increment | |
| +------------+--------------+------+-----+---------+----------------+ |
| | deptId | int(11) | NO | MUL | | | |
| +------------+--------------+------+-----+---------+----------------+ |
| | courseName | varchar(100) | NO | | | | |
| +------------+--------------+------+-----+---------+----------------+ |
| |
| dept |
| +----------+--------------+------+-----+---------+----------------+ |
| | Field | Type | Null | Key | Default | Extra | |
| +----------+--------------+------+-----+---------+----------------+ |
| | deptId | int(11) | NO | PRI | | auto_increment | |
| +----------+--------------+------+-----+---------+----------------+ |
| | deptName | varchar(100) | NO | | | | |
| +----------+--------------+------+-----+---------+----------------+ |
| |
| scjunction |
| +------------+---------+------+-----+---------+----------------+ |
| | Field | Type | Null | Key | Default | Extra | |
| +------------+---------+------+-----+---------+----------------+ |
| | id | int(11) | NO | PRI | | auto_increment | |
| +------------+---------+------+-----+---------+----------------+ |
| | studentId | int(11) | NO | MUL | | | |
| +------------+---------+------+-----+---------+----------------+ |
| | courseId | int(11) | NO | MUL | | | |
| +------------+---------+------+-----+---------+----------------+ |
| | term | int(11) | NO | | | | |
| +------------+---------+------+-----+---------+----------------+ |
| | attendance | int(11) | NO | | | | |
| +------------+---------+------+-----+---------+----------------+ |
| | grade | int(11) | NO | | | | |
| +------------+---------+------+-----+---------+----------------+ |
| |
| student |
| +-----------+--------------+------+-----+---------+----------------+ |
| | Field | Type | Null | Key | Default | Extra | |
| +-----------+--------------+------+-----+---------+----------------+ |
| | studentId | int(11) | NO | PRI | | auto_increment | |
| +-----------+--------------+------+-----+---------+----------------+ |
| | fullName | varchar(100) | NO | | | | |
| +-----------+--------------+------+-----+---------+----------------+ |
| |
| testtable |
| +-----------------------------------------+---------------+------+-----+---------+-------+ |
| | Field | Type | Null | Key | Default | Extra | |
| +-----------------------------------------+---------------+------+-----+---------+-------+ |
| | noPKhere | int(11) | NO | | | | |
| +-----------------------------------------+---------------+------+-----+---------+-------+ |
| | veryLongColumnName_And_Then.Some_%_More | decimal(12,2) | YES | | | | |
| +-----------------------------------------+---------------+------+-----+---------+-------+ |
| | limit | int(11) | NO | | | | |
| +-----------------------------------------+---------------+------+-----+---------+-------+ |
| |
| testtable2 |
| +-------+---------+------+-----+---------+-------+ |
| | Field | Type | Null | Key | Default | Extra | |
| +-------+---------+------+-----+---------+-------+ |
| | id | int(11) | NO | PRI | | | |
| +-------+---------+------+-----+---------+-------+ |
+--------------------------------------------------------------------------------------------+
Note1 ：创建一个名为Reporting101a的数据库来容纳两个存储过程和一些支持表。这些例程通过调用存储过程来启动，该存储过程通过使用字符串引用要在上报告的数据库。
通过特殊INFORMATION_SCHEMA数据库以只读安全方式访问生成输出的数据。因此，未触及报告的数据库。
此数据库中保留了三个非临时表。
-
reportDataDefsSession- 用于获取会话＃ 的简单表格
-
reportDataDefs- 数据从INFORMATION_SCHEMA返回并按摩了一下。它是基于会话的。 -
reportOutput- 用于打印打印的表格，如MySQL的DESCRIBE。它只是一个将输出放在一起的表。它是基于会话的。 - 用于描述所有表格的数据库名称，例如
describe myTable -
INTOUT参数来举行会话＃ - 布尔值：您希望从末尾的报告表中删除数据吗
- boolean：我们应该自动调用生成
describe的漂亮的打印存储过程 - 就像输出一样。如果您决定将参数4作为FALSE传递，那么您的输出可能类似于：
Note2 ：此INT变量包含在OUT参数目标中，写入并允许您在第一个存储过程准备好之后将其他代码楔入数据。它表示会话＃隔离输出以供以后报告。
某些环境（如PHP）具有某些技巧，这使得这对某些程序员来说成为一种阻碍。因此，如果您需要自己组合两个存储过程，那么这样做（或者如果您感到困惑，请单独询问我）。
在任何情况下，它都会显示数据或工作如何链接存储过程调用。
老实说我提出会话＃作为OUT参数的一个主要原因是我知道我必须创建一个CURSOR来获得漂亮的输出。这需要在第二个存储过程的顶部Cursor DECLARE。 DECLARE必须出现在存储过程的顶部。所以双手绑着，我走了这条路。
Note3 ：这是对First存储过程的调用。很可能您将在此次调用之后将其作为第4个参数设置为TRUE。存储过程在其中有很好的记录。第3个参数是您是否希望从会话＃的报告表中删除数据。删除发生在作为结果集的任何输出之后。所以，这取决于你的选择。
参数：
Note4 ：用于需要不同输出但希望使用会话＃的情况。你通常不需要这个。
答案 1 :(得分：4)
您只需要删除表格输出的第一行和最后一行，并将+替换为|，以获得表格的降价格式。
这样：
|Field|Type|Null|Key|Default|Extra|
|-----|----|----|---|-------|-----|
|blockheight|int(11)|No|PRI|NULL||
...
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