Dette udvider et svar givet Her
. Det tilføjer tegnsæt- og sorteringskolonnerne, og det samme på database- og tabelniveau. Inkluderet er barebones, der sorterer efter to valgmuligheder:Alfabetisk og efter tabelstørrelse, som beregnet svarende til her
. Jeg tror stadig, at det koncept har brug for en peer review. Rolando på DBA her
viste en metode, og Rick James kommenterede. Det er ikke en simpel beregning og inkorporerer aldrig ikke-statiske data såsom TEKST og BLOB s. Så du er velkommen til at forbedre den beregning og dele den. Uanset hvad vil tabellerne generelt vende tilbage i den ønskede sorteringsrækkefølge, hvis de er efter 'størrelse'. Jeg giver ingen garanti for dets nøjagtighed overhovedet, da det er relateret til InnoDB-filstørrelsen.
Det giver dig mulighed for at forbedre sorteringsmulighederne. For eksempel ved at have en anden tabel til sorteringsrækkefølgesammenføjninger baseret på hovedtabeller vs. understøttende og kodetabeller.
Sessioner: Dette er afhængigt af konceptet med en session, som blot er et eksempel på, at du kalder rutinerne. Tænk på dem som Snapshots der kan fås adgang senere. Dataene på det tidspunkt er indeholdt i et Session-øjebliksbillede. Kan være nyttig, når du ændrer tabeller. Især sammenstilling. Åh, og angående sortering, Foreign Key-begrænsninger mislykkes ofte på grund af forkerte sorteringsopsætninger, da udviklere klipper og indsætter kode fra internettet (tegnsæt på tabelniveau og kolonneniveau og uoverensstemmelser mellem sortering). Det er derfor, jeg smed det ind i denne version.
Rutinerne lever i en database Reporting101a der huser de to lagrede procedurer og nogle understøttende tabeller (stort set alle sessionsbaserede). Omkring 5 borde.
Opkaldseksempler:
kald Reporting101a.describeTables_v3('myDb',@theOutVar,false,true,'size')kald Reporting101a.describeTables_v3('myDb',@theOutVar,false,true,'alpha')kald Reporting101a.Print_Tables_Like_Describe(4,'size')
Se Bemærkning A
Parametre (1. Lagret Proc):
- Databasenavnet til at beskrive alle tabeller.
INT UDparameter for at holde session #- boolesk:vil du have data slettet fra rapporteringstabellen til sidst
- boolesk:skal vi automatisk kalde den Pretty Printing-lagrede procedure, der genererer
describe-lignende output. - Sorteringsrækkefølge:'størrelse' eller 'alfa'. Faktisk vil alt andet end 'størrelse' resultere i 'alfa'.
Parametre (Pretty Printing Stored Proc):
- Sessionsnummeret for tidligere gemte snapshot.
- Sortér rækkefølge som ovenfor.
Koden er temmelig veldokumenteret, så den ikke bliver til 600 linjer kode mod 400.
Rutinerne er selvstændige og selvrefererende i Reporting101a database. Så ring dem eksplicit fra hvor som helst.
Bemærk A: Med hensyn til eksemplerne ovenfor:Eks. 1 og 2 som ens, bare en anden sorteringsrækkefølge. Dette er din normale måde at bruge det på med kun én opkald. Tabelstørrelsen vises altid ved siden af tabelnavnet. Kun med 'størrelse' er det sorteret faldende på det. Med den 4. parameter som True , kalder den automatisk Pretty Printing Stored Proc til sidst. Ellers gengives et almindeligt Jane-resultatsæt. @theOutVar vil blive skrevet til, da det repræsenterer den oprettede session #. Det er nyttigt til manuelt at kalde Pretty Printing-lagrede proc kort derefter, kile en af dine rutiner ind i og bruge dataene eller genafspille resultaterne måneder senere (af det frosne snapshot). Så Eks. 3 er tilfældet, hvor du ønsker at hente data til output baseret på et tidligere opkald efter at have fået tilbageført et sessionsnummer. Som f.eks. de før nævnte eksempler 1 og 2 (hvor parameter #4 ville have været Falsk dog). Eller hvis du blot ønsker at genrapportere om et tidligere dataøjebliksbillede.
Den foreslåede brug er ikke at slette sessionsdata efter opkaldene. Lad derfor parameter #3 være False , hvilket betyder slet ikke.
Rutinerne påvirker ikke dine data på nogen måde. Det ændrer kun data i Reporting101a database.
Output: Hvis rutinen køres uden for kommandolinjen (såsom i MySQL Workbench), vil en tabelindpakningskolonne omgive hele alle de tabeller, der er genereret til output. Den har en kolonneoverskrift på '' (tom streng). Men det er stadig ret irriterende. Dette ses i Output1 vist nedenfor. Men hvis du bruger kommandolinjen kontakter
-N -B (spring kolonnenavne over og batch-tilstand), f.eks. med følgende opkald:
mysql -uYourDBUser -p -N -B -e "call Reporting101a.describeTables_v3('Sample011',@theOutVar,false,true,'size')" > sampleOut.txt
... det vil generere et ikke-indpakket output. Mere glædeligt. Skrevet til en sampleOut.txt fil. Se Output2 nedenfor.
Testet på: 5.5 , 5.6.31 og 5.7.13 .
Ydeevne: Den bruger CURSORS for det smukke tryk. Jeg plejer at grine af konceptet. Men i betragtning af, at disse er sjældne opkald, og et minut eller to måske ville virke acceptabelt, var jeg glad for at finde, at ydeevnen var under 10 sekunder for et skema med 120 tabeller. Linux er meget hurtigere end Windows i mine tests.
To lagrede procedurer (inklusive CREATE SCHEMA øverst):
CREATE SCHEMA IF NOT EXISTS `Reporting101a`; -- See **Note1**
DROP PROCEDURE IF EXISTS `Reporting101a`.`describeTables_v3`;
DELIMITER $$
CREATE DEFINER=`root`@`localhost` PROCEDURE `Reporting101a`.`describeTables_v3`(
IN pDBName 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
IN pOrderBy CHAR(20) -- 'ALPHA' OR 'SIZE'. Alphabetical order, or table size order(desc)
)
BEGIN
DECLARE thisTable CHAR(100);
DECLARE beginDT,endDT DATETIME;
SET beginDT=NOW();
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,
cCharSetName VARCHAR(100) NULL,
cCollName 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,
cCharSetNameMaxLen INT NOT NULL,
cCollNameMaxLen INT NOT NULL
);
INSERT Reporting101a.tOutput(tblName,ordVal,cField,cType,cNull,cKey,cDefault,cExtra,cCharSetName,cCollName)
SELECT TABLE_NAME,ORDINAL_POSITION,COLUMN_NAME,COLUMN_TYPE,RPAD(IS_NULLABLE,4,' '),
RPAD(COLUMN_KEY,3,' '),RPAD(COLUMN_DEFAULT,7,' '),EXTRA,CHARACTER_SET_NAME,COLLATION_NAME
FROM INFORMATION_SCHEMA.COLUMNS
WHERE table_schema = pDBName 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;
UPDATE Reporting101a.tOutput
SET cCharSetName=RPAD(COALESCE(cCharSetName,''),8,' ')
WHERE LENGTH(COALESCE(cCharSetName,''))<8;
UPDATE Reporting101a.tOutput
SET cCollName=RPAD(COALESCE(cCollName,''),9,' ')
WHERE LENGTH(COALESCE(cCollName,''))<9;
INSERT Reporting101a.tOutput2(tblName,colCount,cFieldMaxLen,cTypeMaxLen,cNullMaxLen,
cKeyMaxLen,cDefaultMaxLen,cExtraMaxLen,cCharSetNameMaxLen,cCollNameMaxLen)
SELECT tblName,COUNT(*),0,0,0,0,0,0,0,0
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,
IFNULL(MAX(LENGTH(cCharSetName)),0) AS mCharSetName,IFNULL(MAX(LENGTH(cCollName)),0) AS mCollName
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,cCharSetNameMaxLen=x.mCharSetName,cCollNameMaxLen=x.mCollName;
CREATE TABLE IF NOT EXISTS Reporting101a.reportDataSessions
( -- For the purpose of safe session auto_inc usage, timings, and rowcount
-- Please don't delete unless you want the sessions to experience aberrant behavior.
-- That is, the inability to report on prior sessions run. Which is no big deal.
sessionId INT AUTO_INCREMENT PRIMARY KEY,
dbName VARCHAR(100) NOT NULL,
-- character_set_name VARCHAR(100) NULL,
-- collation_name VARCHAR(100) NULL,
creationDT DATETIME NOT NULL,
partA_BeginDT DATETIME NULL,
partA_EndDT DATETIME NULL, -- See the following for fractional seconds:
partB_BeginDT DATETIME NULL, -- http://dev.mysql.com/doc/refman/5.7/en/fractional-seconds.html
partB_EndDT DATETIME NULL,
rowCount INT NULL
);
CREATE TABLE IF NOT EXISTS Reporting101a.reportDataColumns
( 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
cCharSetName VARCHAR(100) NULL, -- Default value
cCollName 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,
cCharSetNameMaxLen INT NOT NULL,
cCollNameMaxLen INT NOT NULL
);
CREATE TABLE IF NOT EXISTS Reporting101a.reportDataTables
( sessionId INT NOT NULL,
tblName VARCHAR(100) NOT NULL, -- tablename
character_set_name VARCHAR(100) NULL, -- table-level default char set
collation_name VARCHAR(100) NULL, -- table-level default collation
rowcount BIGINT NULL, -- rowcount (subject to system refresh, ditto, next column)
tblSizeMB DECIMAL(14,2) NULL -- in MB
);
CREATE TABLE IF NOT EXISTS Reporting101a.reportDataDatabases
( sessionId INT NOT NULL,
dbName VARCHAR(100) NOT NULL, -- Tablename
character_set_name VARCHAR(100) NULL, -- db-level default char set
collation_name VARCHAR(100) NULL -- db-level default collation
);
-- 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.reportDataSessions(dbName,creationDT) VALUES (pDBName,now());
SET @mySession=LAST_INSERT_ID(); -- there it is, our session # (read the above paragraph)
INSERT Reporting101a.reportDataColumns(sessionId,tblName,ordVal,cField,cType,cNull,cKey,cDefault,cExtra,cCharSetName,cCollName,
colCount,cFieldMaxLen,cTypeMaxLen,cNullMaxLen,cKeyMaxLen,cDefaultMaxLen,cExtraMaxLen,cCharSetNameMaxLen,cCollNameMaxLen)
SELECT @mySession,t1.tblName,t1.ordVal,t1.cField,t1.cType,t1.cNull,t1.cKey,t1.cDefault,t1.cExtra,t1.cCharSetName,t1.cCollName,
t2.colCount,t2.cFieldMaxLen,t2.cTypeMaxLen,t2.cNullMaxLen,t2.cKeyMaxLen,t2.cDefaultMaxLen,t2.cExtraMaxLen,t2.cCharSetNameMaxLen,t2.cCollNameMaxLen
FROM Reporting101a.tOutput t1
JOIN Reporting101a.tOutput2 t2
ON t2.tblName=t1.tblName
ORDER BY t1.tblName,t1.id;
INSERT Reporting101a.reportDataTables(sessionId,tblName,character_set_name,collation_name,rowcount,tblSizeMB)
SELECT DISTINCT @mySession,tblName,NULL,NULL,NULL,NULL
FROM Reporting101a.reportDataColumns
WHERE [email protected];
-- http://dev.mysql.com/doc/refman/5.7/en/collation-character-set-applicability-table.html
-- TLDR; A collation can map to a character set
UPDATE Reporting101a.reportDataTables rdt
JOIN INFORMATION_SCHEMA.`TABLES` ist
ON ist.TABLE_SCHEMA=pDBName AND ist.TABLE_NAME=rdt.tblName
JOIN INFORMATION_SCHEMA.`COLLATION_CHARACTER_SET_APPLICABILITY` isccsa
ON isccsa.COLLATION_NAME=ist.TABLE_COLLATION
SET rdt.character_set_name=isccsa.CHARACTER_SET_NAME,rdt.collation_name=isccsa.COLLATION_NAME,
rdt.rowcount=ist.TABLE_ROWS,rdt.tblSizeMB=round(((ist.data_length+ist.index_length) / 1048576), 2)
WHERE [email protected];
INSERT Reporting101a.reportDataDatabases(sessionId,dbName,character_set_name,collation_name)
SELECT @mySession,pDBName,DEFAULT_CHARACTER_SET_NAME,DEFAULT_COLLATION_NAME
FROM INFORMATION_SCHEMA.SCHEMATA
WHERE schema_name = pDBName;
DROP TEMPORARY TABLE Reporting101a.tOutput;
DROP TEMPORARY TABLE Reporting101a.tOutput2;
SET [email protected]; -- the OUT var that came in as a parameter
SET endDT=NOW();
UPDATE Reporting101a.reportDataSessions
SET partA_BeginDT=beginDT,partA_EndDT=endDT
WHERE [email protected];
-- ***************************************************************************
-- ***************************************************************************
-- 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,pOrderBy);
-- 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 reportDataColumns table for this session #
IF pOrderBy!='size' THEN
-- Order by Alpha for any parameter except 'size'
SELECT *
FROM Reporting101a.reportDataColumns
WHERE [email protected]
ORDER BY tblName,ordVal;
ELSE
-- Order By size DESC
SELECT rdc.*
FROM Reporting101a.reportDataTables rdt
JOIN Reporting101a.reportDataColumns rdc
ON rdc.tblName=rdt.tblName and rdc.sessionId=rdt.sessionId
WHERE [email protected]
ORDER BY rdt.tblSizeMB DESC,rdc.tblName,rdc.ordVal;
END IF;
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.reportDataColumns
WHERE [email protected];
DELETE FROM Reporting101a.reportDataTables
WHERE [email protected];
-- Do not delete the row from the Sessions table for now (you can, I'm not atm)
END IF;
END$$
DELIMITER ;
-- *****************************************************************
-- *****************************************************************
-- *****************************************************************
DROP PROCEDURE IF EXISTS `Reporting101a`.`Print_Tables_Like_Describe`;
DELIMITER $$
CREATE DEFINER=`root`@`localhost` PROCEDURE `Reporting101a`.`Print_Tables_Like_Describe`(
IN pSessionId INT,
IN pOrderBy CHAR(20) -- 'size' or 'alpha' (see CURSORs below). Size means Tablesize (see ____).
)
BEGIN
-- Please note: CURSOR stuff must come last in DECLAREs, else "Error 1337: Variable or condition decl aft curs"
DECLARE beginDT,EndDT DATETIME;
DECLARE done INT DEFAULT FALSE;
DECLARE curTable VARCHAR(100) DEFAULT '';
DECLARE bFirst BOOL DEFAULT TRUE;
DECLARE lv_dbName,CharSetName,CollationName,someClueToCaller VARCHAR(100);
DECLARE lv_rowCount,lineCount INT;
DECLARE theSize DECIMAL(14,2);
DECLARE lv_sessionDT DATETIME;
DECLARE lv_tblName,lv_cField,lv_cType,lv_cNull,lv_cKey,lv_cDefault,lv_cExtra,lv_cCharSetName,lv_cCollName VARCHAR(100);
DECLARE lv_ordVal,lv_colCount,lv_cFieldMaxLen,lv_cTypeMaxLen,lv_cNullMaxLen,lv_cKeyMaxLen,
lv_cDefaultMaxLen,lv_cExtraMaxLen,lv_cCharSetNameMaxLen,lv_cCollNameMaxLen INT;
-- -------------------------------------------------------------------------------------------------------------------
-- The below cursor is in Alphabetical Ascending order
DECLARE curAlpha CURSOR FOR SELECT tblName,ordVal,cField,cType,cNull,cKey,cDefault,cExtra,cCharSetName,cCollName,
colCount,cFieldMaxLen,cTypeMaxLen,cNullMaxLen,cKeyMaxLen,cDefaultMaxLen,cExtraMaxLen,cCharSetNameMaxLen,cCollNameMaxLen
FROM Reporting101a.reportDataColumns
WHERE rdt.sessionId=pSessionId
ORDER BY tblName,ordVal; -- ascending order by tablename then the ordinal position of each column (1..n)
-- The below cursor is in Tablesize Descending order, followed by tablename + ordinal position ascending
DECLARE curSize CURSOR FOR SELECT rdc.tblName,rdc.ordVal,rdc.cField,rdc.cType,rdc.cNull,rdc.cKey,rdc.cDefault,
rdc.cExtra,rdc.cCharSetName,rdc.cCollName,rdc.colCount,rdc.cFieldMaxLen,rdc.cTypeMaxLen,rdc.cNullMaxLen,
rdc.cKeyMaxLen,rdc.cDefaultMaxLen,rdc.cExtraMaxLen,rdc.cCharSetNameMaxLen,rdc.cCollNameMaxLen
FROM Reporting101a.reportDataTables rdt
JOIN Reporting101a.reportDataColumns rdc
ON rdc.tblName=rdt.tblName and rdc.sessionId=rdt.sessionId
WHERE rdt.sessionId=pSessionId
ORDER BY rdt.tblSizeMB DESC,rdc.tblName,rdc.ordVal; -- tablesize desc, then tablename + ordinal position ascending
-- What is the Ordinal Position? Simply 1..n as saved in the db
-- (see ORDINAL_POSITION in INFORMATION_SCHEMA.COLUMNS)
--
-- If it is terribly bothersome, then look into
-- "ALTER TABLE" and use FIRST or AFTER .. :)
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"
-- -------------------------------------------------------------------------------------------------------------------
SET beginDT=NOW();
SET lineCount=0;
CREATE TABLE IF NOT EXISTS Reporting101a.reportOutput
( lineNum INT AUTO_INCREMENT PRIMARY KEY,
sessionId INT NOT NULL,
lineOut varchar(200) NOT NULL
);
DELETE FROM Reporting101a.reportOutput WHERE sessionId=pSessionId; -- cleans up a prior run with this session#
IF pOrderBy!='size' THEN
OPEN curAlpha; -- we are in using the Alphabetical Cursor (includes typos from caller for the sort column)
ELSE
OPEN curSize; -- we are in using the Tablesize Cursor
END IF;
-- **Place004** (Top-most output, Session #, then get top-level database info, there is not much of it)
-- Here is the importance of it though: it documents the state of things at that point in time
-- And it allows for reporting later by using that Session # (so that is why a Session # should hang out and remain)
-- So, a snapshot. You don't even need to print and use the output now. You can have it for later. To compare.
SELECT creationDT INTO lv_sessionDT FROM Reporting101a.reportDataSessions WHERE sessionId=pSessionId;
SET someClueToCaller='Typo from caller, using Alphabetical';
IF pOrderBy='size' THEN
SET someClueToCaller='table size DESC';
END IF;
IF pOrderBy='alpha' THEN
SET someClueToCaller='tablename alphabetical';
END IF;
INSERT Reporting101a.reportOutput(sessionId,lineOut)
SELECT pSessionId,CONCAT('Session: ', pSessionId, ', Date:',lv_sessionDT,' , SortOrder: ',someClueToCaller);
INSERT Reporting101a.reportOutput(sessionId,lineOut) VALUES (pSessionId,''); -- blank line
SELECT dbName,character_set_name,collation_name INTO lv_dbName,CharSetName,CollationName
FROM Reporting101a.reportDataDatabases
WHERE sessionId=pSessionId;
INSERT Reporting101a.reportOutput(sessionId,lineOut)
SELECT pSessionId,CONCAT('Database: ', lv_dbname, ' (CharSet=', COALESCE(CharSetName,''), ', Collation=', COALESCE(CollationName,''), ')');
INSERT Reporting101a.reportOutput(sessionId,lineOut) VALUES (pSessionId,''); -- blank line
-- end **Place004** ----------------------------------------------------------------------
read_loop: LOOP
IF pOrderBy!='size' THEN
FETCH curAlpha INTO lv_tblName,lv_ordVal,lv_cField,lv_cType,lv_cNull,lv_cKey,lv_cDefault,lv_cExtra,lv_cCharSetName,
lv_cCollName,lv_colCount,lv_cFieldMaxLen,lv_cTypeMaxLen,lv_cNullMaxLen,lv_cKeyMaxLen,lv_cDefaultMaxLen,
lv_cExtraMaxLen,lv_cCharSetNameMaxLen,lv_cCollNameMaxLen ;
ELSE
FETCH curSize INTO lv_tblName,lv_ordVal,lv_cField,lv_cType,lv_cNull,lv_cKey,lv_cDefault,lv_cExtra,lv_cCharSetName,
lv_cCollName,lv_colCount,lv_cFieldMaxLen,lv_cTypeMaxLen,lv_cNullMaxLen,lv_cKeyMaxLen,lv_cDefaultMaxLen,
lv_cExtraMaxLen,lv_cCharSetNameMaxLen,lv_cCollNameMaxLen ;
END IF;
IF done THEN
LEAVE read_loop;
END IF;
IF lv_tblName<>curTable THEN -- **Place006**, "the IF"
-- We stumbled into a "This is a New table condition (different table)
-- So we need to create the New Chunk Header Info (also get table-level info like rowcount etc ie **Place7** below)
-- (as opposed to just displaying the next column info on a table we were already working with)
IF bFirst=FALSE THEN
INSERT Reporting101a.reportOutput(sessionId,lineOut)
SELECT pSessionId,''; -- Insert a blank line between tables (but not the first time)
ELSE
SET bFirst=FALSE;
END IF;
-- **Place007** (get top-level table info, there is not much of it, just, like, rowcount, charset, collation)
SELECT rowcount,character_set_name,collation_name,tblSizeMB INTO lv_rowCount,CharSetName,CollationName,theSize
FROM Reporting101a.reportDataTables
WHERE sessionId=pSessionId AND tblName=lv_tblName;
INSERT Reporting101a.reportOutput(sessionId,lineOut)
SELECT pSessionId,CONCAT(lv_tblName,' (rowcount=',ifnull(lv_rowCount,0),') (Size=',theSize,'MB) (CharSet=',COALESCE(CharSetName,''), ', Collation=',COALESCE(CollationName,''),')');
-- end **Place007** ----------------------------------------------------------------------
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)), '-+-',
REPEAT('-',GREATEST(8,lv_cCharSetNameMaxLen)),'-+-',
REPEAT('-',GREATEST(5,lv_cCollNameMaxLen)), '-+');
SET @dashLineNumRow=LAST_INSERT_ID(); -- **Place008**: Save this row id so we can use it again in one sec
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)), ' | ',
'Char Set',
REPEAT(' ',GREATEST(0,lv_cCharSetNameMaxLen-8)), ' | ',
'Collation',
REPEAT(' ',GREATEST(0,lv_cCollNameMaxLen-9)), ' |');
INSERT Reporting101a.reportOutput(sessionId,lineOut)
SELECT pSessionId,lineOut FROM Reporting101a.reportOutput
WHERE [email protected]; -- related to **Place008** above (just repeat it to close-off header)
SET curTable=lv_tblName; -- set the variable which is our flag for Next/New/Different table (related: **Place006** above)
END IF;
-- The below is the generic insert for a column's info
INSERT Reporting101a.reportOutput(sessionId,lineOut)
SELECT pSessionId,
CONCAT('| ',
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))),''),' | ',
lv_cCharSetName,
REPEAT(' ',GREATEST(0,lv_cCharSetNameMaxLen-LENGTH(lv_cCharSetName))),' | ',
lv_cCollName,
REPEAT(' ',GREATEST(0,lv_cCollNameMaxLen-LENGTH(lv_cCollName))),' |');
SET lineCount=lineCount+1; -- increment only for column rows not separator rows
INSERT Reporting101a.reportOutput(sessionId,lineOut)
SELECT pSessionId,lineOut
FROM Reporting101a.reportOutput
WHERE [email protected];
END LOOP;
IF pOrderBy!='size' THEN
CLOSE curAlpha;
ELSE
CLOSE curSize;
END IF;
SET endDT=NOW();
UPDATE Reporting101a.reportDataSessions
SET partB_BeginDT=beginDT,partB_EndDT=endDT,rowCount=lineCount
WHERE sessionId=pSessionId;
SELECT lineOut AS '' from Reporting101a.reportOutput WHERE sessionId=pSessionId ORDER BY lineNum;
-- Note: The whole outer box wrapper is suppressed (which is cool) if we perform a
--
-- OSPrompt> mysql -N -B -u UserName -p -e "call Reporting101a.describeTables_v3('stackoverflow',@theOutVar,false,true,'size')"
--
-- That above -N -B suppresses column info (-N), ... (-B) keeps the output left aligned and is Batch mode
-- I understand (-N), but without (-B) the alignment goes right-aligned
-- Regardless, it allows us to perform what would appear to
-- be merely PRINT statements, if you will. No outer box wrapper in output.
END$$
DELIMITER ;
Output1 (viser indpakning/indeholdende yderbord). De to gule highlighter-stykker er bordnavnene.
Output2 (Kommandolinje ved hjælp af -N -B kontakter), som fjerner det ydre indpakningsbord. Se eksemplet ovenfor i Output sektion til brug. Effektiv giver mulighed for PRINT-lignende kommandoer i MySQL.
