Or if "RENAME DATABASE" is not implemented yet:
CREATE newDatabase;
then for each table in the oldDatabase issue:
ALTER TABLE oldDatabase.tblX RENAME TO newDatabase.tblX
After all is done:
DROP oldDatabase
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Gabriel PREDA
Senior Web
DEV1 and DEV2 !!!
Thanx
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esults for DEV1 are still valid ?
And is the list still ON ? ... I'm subscribed to the list... but
didn't got any messages...
Thanx for the answers !
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personally go with at most 2 files arround 500MB... keeping in
mind that you have file_per_table on !!!
How big transactions are you expecting... how many clients are you expecting ?
Answers to these questions can help you tweak the server...
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Gabriel PREDA
Read here: http://dev.mysql.com/doc/refman/5.1/en/charset-connection.html
have fun !
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!
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.
The only notable difference... as you can see... is in prepending 0 to
the number to reach the desired "length"... if the number is greater
than or equal to the declared "length" it has no effect.
So AFAIK this is the purpose of the "length"...in INTEGER columns.
--
Complementary to what Donna said,
You can issue a
SHOW WARNINGS
sql after some of these queries... the "cutt-off" will be listed there !
You will get a mysql_result in the form:
Level - Code - Message
Warning - 1265 - Data truncated for column 'column_name' at row X.
Gabri
: http://www.mysqlfront.de/
It's my favorite toll now it's gone
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Senior Web Deve
I would try:
CREATE TABLE Inv_Id (
ID INT(12) UNSIGNED ZEROFILL AUTO_INCREMENT PRIMARY KEY,
MID INT NOT NULL,
FOREIGN (MID) REFERENCES 'Model' (ID)
);
Note the UNSIGNED and ZEROFILL flags !
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this will not affect LAST_INSERT_ID() value.
And another thing... LAST_INSERT_ID() is kept on a per connection
basis... so it will not mix with other users LAST_INSERT_IDs
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.
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reating them on disk !!!
I'm pretty sure you can figure out the speed improvment !
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On 10/5/06, David Sparks <[EMAIL PROTECTED]> wrote:
Its already been running 2 days. I probably need to index some more
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H and CHAR_LENGTH only if you
use multi-byte strings ! ... I use CN and others...
So... try:
SELECT MAX(LENGTH(`CnText`)) FROM `Translations`
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Gabriel PREDA
Senior Web Developer
On 9/14/06, Dominik Klein <[EMAIL PROTECTED]> wrote:
For adjusting "ma
as I mentioned above]
But the gain is that the second query that will return the number of
rows without the LIMIT clause:
SELECT FOUND_ROWS()
will return instantly.
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N rs.serie_id = s.id
INNER JOIN races AS r ON r.id = rs.race_id
INNER JOIN participants AS p ON p.race_id = r.id
WHERE s.receipt = 1
AND p.rider_id = 236
AND SUM(p.fee) > 0
GROUP BY s.id
ORDER BY s.f_date;
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For lis
d in 60bytes.
If a and b are VARCHARs and c are CHARs that's it !
If you have all VARCHARs I'm in the dark !
Hope it helps !
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Try:
ALTER TABLE `tbl_name` DISABLE KEYS;
-- now insert in the TXT file
ALTER TABLE `tbl_name` ENABLE KEYS;
I think this is what you were looking for !
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hat was not the issue...
Maybe you ran out of memory into one of:
max_allowed_packet
net_buffer_length
max_join_size
Try enlarging those values... on the server also...
But first try to run with '--compress' maybe this will fix...
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only request 30 rows with LIMIT...
MySQL will still JOIN the tables... the LIMIT clause is applied just
before sending the resultset to the client !
If you can't do it otherwise try setting a higher
"sql_max_join_size"... or try using some temporary tables !
Good fortune !
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Gabr
GROUP BY DATE_FORMAT( payments . date , '%Y-%m' ) WITH
ROLLUP
This will give you something like:
amount | paymentDate
200 | 2005-01
58 | 2005-02
258 | NULL
Will it do ?
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ons... all used):
innodb_thread_concurency / CPU-workload
8 / 90%
4 / 75 - 85%
3 / 60 - 70%
2 / 25%
So set it lower... lower... lower... when I left the office friday my
colleagues were still working at this... I'll keep you all updated !
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created on server2 do not reside on it... but on server1... the
queries are actualy sent to server1 processed and the result is
returned to server2...
From these 2 i'll put my money on the first one !
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in case of a power
failure the domain controller is up and running and holding all the
data up to the last SAVE given by any user
Now imagine instead of domain controller is MySQL... in your case...
)
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Yup... For now the problem stopped...
These humongos values were because they were initialized at MAX_INT on
that 64bit machine...
In the my.cnf file they were not mentioned at all !
2^64 - 1 == 18446744073709551615
Now look at the values below !
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On 6
ptimization.html - slide:37/80)
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N: SPACE(n) - generates a string with a space in it !
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and... the only thing we
can do is ask the hosting provider to do a HARDWARE reset... and
someone goes to the machine and pushes the reset button... this hppens
at least once a week...
Does this happened to someone else ?
What was the problem ?
Thanx in advance !
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the column:
DROP FOREIGN KEY `fk_message_idnr_manually_set`
If you DROP an index a FOREIGN KEY based on that index will not be
dropped automaticaly...
Hope this helps !
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To u
index on:
a, c
or
c, a
Try variations... of indexes toghether with EXPLAIN SQL...
Also have a look at MySQL Optimization by Jeremy Zawodny at
http://jeremy.zawodny.com/mysql/mysql-optimization.html
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, c FROM table_name WHERE d > 9; - will use the index
Hope this clears up things !
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RENAME new_db.table2;
ALTER TABLE old_db.table_N RENAME new_db.tableN;
DROP DATABASE old_db;
-- -- End renaming database
-- -- -- -- -- -- -- -- -- -- -- -- -- -- --
Gabriel PREDA
Senior Web Developer
with creating the 2 indexes at once.*
*If not create the one by one... i'm sure some other queries will be
honoured between those ALTER statements.*
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me will be faster !
[I'll get back if i'll find something in the Certification Study Guide... a
pretty nice book !]
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Gabriel PREDA
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SELECT id, count(*) AS cnt
FROM `table_name`
GROUP BY id
ORDER BY cnt DESC
[ LIMIT 1 ]
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Gabriel PREDA
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Try: http://dev.mysql.com/doc/refman/5.0/en/fulltext-boolean.html
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Gabriel PREDA
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COLUMN COMMENTs are not the same as TABLE COMMENT...
For TABLE COMMENT you should use:
SHOW TABLE STATUS LIKE 'table_name'
*Gilles *(the starter of the thread) wanted COLUMN COMMENTs.
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Sorry forgot to mention MySQL version 4.1.X
> This option is operational as of MySQL 4.1. (It is allowed but ignored in
> earlier versions.)
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Gabriel PREDA
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) CHARSET utf8 COMMENT 'Some comment'
);
Is this... what you needed ?
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Gabriel PREDA
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AND
tour_scorecard_hole.id=tour_player_score.scorecard_hole_id GROUP BY overpar;
And instead of ELSEVALUE you can insert another IF...
There is also a CASE in MySQL... you can also use that one...
What i don't see here is a DEFAULT value... do you have any ?
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Gabriel PREDA
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If there is plenty of free memory...
Can't you completly disable SWAP ?
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Gabriel PREDA
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On 4/7/06, Atle Veka <[EMAIL PROTECTED]> wrote:
>
> However, even though
> there is plenty of free memory linux makes weird decisions from time to
> ti
Only if you run this SQL statement:
*FLUSH PRIVILEGES*
That will make the new password effective.
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Gabriel PREDA
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Try:
INSERT *IGNORE* INTO table (a,b) VALUES (1,2)
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Gabriel PREDA
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o use the last value from that table:
Either you use a MAX() request:
*SELECT @lastGenerated:=MAX(columnName) FROM tableName*
Or:
*SHOW TABLE STATUS LIKE 'tableName'*
and somewhere in the result is the AUTO_INCREMENT value.
Good luck !
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Gabriel PREDA
Senior Web Developer
ave... you must add an index on the column named "id" !
Run in MySQL client:
ALTER TABLE ultimas_respuestas_snmp ADD INDEX someNameForTheInde4x(id);
It will take a while... but it will get you faster.
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Gabriel PREDA
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ELECT statements.
In SET statements you don't need that... you can write:
*SET @last = last_insert_id()*
Or with values from outside MySQL:
*SET @iNeedThis = 'someText';*
Then use both in an insert statement:
*INSERT INTO table (lid, txt) VALUES (@last, @iNeedThis);*
Hope this cleared
vance.
Or you could use:
SELECT title, Comment FROM table_name WHERE MATCH (Comment) AGAINST ('"foo
bar"' IN BOOLEAN MODE);
Note the double quotes inside single quotes... ' "foo bar" '... needless to
say what it does... everybody had googled that way
that a value of 0 in an
auto_increment column is not a good thing ... as everybody said before !
Good luck !
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ot scan
NR_OF_ROWS(`list_problem_ma`) * NR_OF_ROWS(`list_problem_ma`) but only
NR_OF_ROWS(`list_problem_ma`) * 1 You will still get: Using where;
Using index; Using temporary; Using filesort ... but i believe that's no way
arround that !
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character sets:
>
> SET NAMES '*charset_name*'
> SET CHARACTER SET *charset_name*
>
> Again the SET NAMES with quotes anything else without !
So... dear writers of MySQL... or DOCs... what's the catch ?
And... of course I'll use it with quotes ... until further
r every change in the row only the second column will
change values !
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On 3/28/06, jonathan <[EMAIL PROTECTED]> wrote:
>
> Basically, I want to have a content row that has two times, the time
> that an insert was done and the time that it was
About the first problem I think you need to give us more data !
As for the seccond... I haven't sen such loops yet...
But you can go arround them and do something like:
SELECT * FROM db WHERE (id BETWEEN 5 AND 50) AND id%5=0
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You don't need to drop a TEMPORARY table... it is dropped at
connection-close !
You don't need to wory about different names for TEMPORARY tables...
Manual says:
> A TEMPORARY table is visible only to the current connection, and is
> dropped automatically when the connection is closed. This mean
One must issue immediately after connection:
SET NAMES 'utf8'
Also look at:
SHOW VARIABLES LIKE 'collation_%';
SHOW VARIABLES LIKE 'character_set_%';
Server must know what you are assking for... and they ALL have to "talk the
same language" !!!
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Gabriel PREDA
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7;t know... 10 tables... what's the point of using "*one single insert*"
how ca one use a "one single insert" to put data in 10 tables ?
So... the design of the application follows in at least 50% of the cases the
design of the DATABASE !
Give us a little more details about your database !
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ODBC
!
Have you searched for ODBC related issues ? Maybe is ODBC's fault.
What server version do you use ? 4 or 5 ? Please specify minor also !
What about connection charset and/or collation ? Have you set them ?
so... ? :)
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Gabriel PREDA
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STATUS - to get and/or compute the statistics you see on the top part
of the screen !
SHOW FULL PROCESSLIST - to get a list of running proceses ( SELECT, INSERT,
UPDATE, CREATE ... )
So it cannot be database bound !
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Gabriel PREDA
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way !
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Gabriel PREDA
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on the both tables I also did a sync. every Sunday ( I had
the smallest traffic on Sundays) and a complete reconstruction of the table
every 2 months... ( MyISAM table - is now 750 MB )
The system is working fine for about 16 months now !
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Gabriel PREDA
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the thing is DISTINCT is implicit !
You will need to add after UNION the keyword ALL !
Good luck !
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Gabriel PREDA
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r him !)...
The fact is that I don't have the bill... does this make me in a less legal
position... will I still get 25% off at the exam ? Should I ask for some
kind of a "deposition" from my friend in USA !???
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Gabriel PREDA
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On 2/27/06, Anago Chima <[EMA
Yes... count me in for this question also... I didn't figured that out... I
just bought "MySQL 5.0 Cerrt. Study Guide" and I wanna know also...
I also saw that the exams for the 5.0 branch are in BETA... when are we
going to expect a final exam ?
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column !
Good luck !
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Gabriel PREDA
Senior Web Developer
**
On 2/17/06, Gilles MISSONNIER <[EMAIL PROTECTED]> wrote:
>
> when I do a "describe a_table", it displays :
> | Field | Type | Null | Key | Default | Extra |
I would like to have a "Comment" that would show
> the meaning of a field.
Interesting... maybe this is because the fill is not actualy stored in the
database... and being sorted/compared as a number MySQL removes the ZEROFILL
!
You can go and do:
select BINARY * from a
union
select BINARY * from a;
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Gabriel PREDA
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On 2/14/06, Juri Shimon
t database tables with
different chartsets and even in a table you can have columns with other
chartsets...
Gabriel PREDA
Senior Web Developer
On 2/14/06, Peter Lauri <[EMAIL PROTECTED]> wrote:
>
> Hi,
> I have a database with around 40 tables that needs to be
my.cnf adding
"ft_stopword_file=/var/lib/mysql/stop_file"
4. rebuild all FULL-TEXT indexes in all databases... if not only new indexes
will take benefit from the new stop-words-file
Hope it helps... !!!
---
Gabriel PREDA
Senior Web Developer
PS: If intere
Not the whole... maybe it's humongous... some lines above line 20 and some
beneath...
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Senior Web Developer
On 2/10/06, sheeri kritzer <[EMAIL PROTECTED]> wrote:
>
> James,
>
> You're going to need to show us the contents of olddbname.sql.
>
>
r` column... because it
allows the `gender` not to be specified... to be null !
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On 2/10/06, Veerabhadrarao Narra <[EMAIL PROTECTED]>
wrote:
>
>
> I have a table named table1 structure is
>
> ++---+--+-+---
No one ?
Please help me with this.
Gabriel
- Original Message -
From: "Gabriel PREDA" <[EMAIL PROTECTED]>
Sent: Wednesday, May 04, 2005 4:36 PM
Subject: Underline or minus sign ?
> I'm going to start the InnoDB engine... and I want to know if the syntax
for
> t
I'm going to start the InnoDB engine... and I want to know if the syntax for
the CNF file unified at last ?
Can I use:
innodb-file-per-table
instead of
innodb_file_per_table ?
[This is just an example]
Can I use only minus sign in the whole CNF file instead of underline ?
Gabriel
--
M
You should be shure that the old client is not in the PATH... because seems
to me that when you're not int the mysql bin directory the old client is
called... withc does not know about the new auth methods...
Or else... start the server with the "--old-password" param.
Gabriel
- Original Me
7; AS UNSIGNED);
MySQL will yell:
+--+
| CAST('FOOBAR' AS UNSIGNED) |
+--+
|0 |
+--+
1 row in set (0.03 sec)
I hope this is clear !
Gabriel PREDA
www.amr.ro
www.lgasso
NSERT is faster.
Of course THIS IS a faulty explanation ("grosso modo" in latin) but show
somehow what's going on !
Gabriel PREDA
- Original Message -
From: "Chris W. Parker" <[EMAIL PROTECTED]>
Subject: How does a multi-row INSERT work?
> Hello,
> I
ITLE in
English', 'TITLE in French');
INSERT INTO `presa_im_content` VALUES(@ID, 'Content in Romanian', 'Content
in English', 'Content in Fench');
UNLOCK TABLES;
This way you do not need to actualy capture the value of the last insert id
)... but be carefull...
ALTER them in 2 steps... ALTER all the columns in the table to a BINARY data
type... then ALTER the table's collation to the desired one... finaly ALTER
all columns back but now using the desired collation !!!
Hope this helps !
Gabriel PREDA
www.amr.ro
www.lgasso
CASCADE
Gabriel PREDA
www.amr.ro
www.lgassociations.info
www.falr.ro
dev.falr.ro
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ble_name`
But the most verbose output you will get using:
SHOW FULL COLUMNS FROM `table_name`
This will show you collation, privileges the user has for the each column
and per-column-comment.
Verbose descriptions of the syntax can be found at
http://dev.mysql.com/doc/mysql/en/show.html
Good l
How internationalized is the ft_stopword_file ?
How can I create a custom ft_stopword_file ?
Is the build in one for english only ?
Gabriel PREDA
www.amr.ro
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ETIME... at 100 million
rows that would make a difference at about 190MB... Or is it "Premature
Optimization" ??)
For the optimization issue you're right...
Regarding TIMESTAMP... Reinhart didn't told us his MySQL version... as of
4.1.2 ... you have better control over TIMESTAMP co
ute in WHERE... so this is
faster.. .but there are 2 queries:
SET @this_moment = NOW();
SELECT * FROM activities WHERE act_date >= @this_moment
Gabriel PREDA
www.amr.ro
- Original Message -
From: Reinhart Viane
To: mysql@lists.mysql.com
Sent: Friday, February 18, 2005 1
O I see... I read this in MySQL Manual... I believe it's something like
SHOW TABLE STATUS LIKE 'table_name'
And then extract the number of rows... I never saw "Select tables optimized
away" and it confused me !
Gabriel PREDA
- Original Message -
From:
MySQL 4.1.10
What does "Select tables optimized away" mean ?
mysql> explain SELECT COUNT(*) AS total FROM members_twining_main;
| 1 | SIMPLE | NULL | NULL | NULL | NULL |NULL | NULL |
NULL | Select tables optimized away |
Gabriel PREDA
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r that I think
is not 'fai' but 'root' as you output says...
To see grants for 'fai'@'mydom.tld' you should use:
SHOW GRANTS FOR 'fai'@'mydom.tld'
Hope it helps !
Gabriel PREDA
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uld remove from my.cnf or my.ini witchever you use...
any declaration on named pipes...
Gabriel PREDA
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;
Results showing only differencies:
type; ref
range;NULL
ref;const
Of course things for me would make no big difference since `ccode` si a 2
letter CHAR... but for a varchar and a big table would !
Gabriel PREDA
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ame transaction...
that is IT WILL BE ROLLED BACK !
Good fortune !
Gabriel PREDA
> -Original Message-
> Andre Matos @ February 07, 2005 6:45 PM
> Let's suppose that I have this sequence of events:
> - create a connection "1"
> -- start a transaction
> ---
expr2
ELSE expr3
As you saw in the response I gave you I used instead of expr3 another
IF... and so on !!!
Gabriel PREDA
www.amr.ro
www.lgassociations.info
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It simple...
if mysql_affected_rows == 2 ---> update (because replace make DELETE and
INSERT)
else if mysql_affected_rows == 1 > insert
Gabriel PREDA
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Hi Chenri,
> 1. is this value for one database or for overall mysql connections?
The value is for overall mysql connections... so it's not for one
database.
> 2. i'm unable to generate 100 connections, i don't have 100 workstations
yet,
> how do i test it?
Why would you ?
> 3. what w
You're right there is none.. .but as you see there is a short line that
says:
"In the WHERE clause, you can use any of the functions that MySQL supports,
except for aggregate (summary) functions. See section Functions and
Operators."
Gabriel PREDA
> - Original Mes
Because it does not know REGEXP... only LIKE patterns...
% Matches any number of characters, even zero characters
_ Matches exactly one character
Taake a look in chapter 13 "String Comparison Functions".
Gabriel PREDA
- Original Message -
From: "s
you have a total of 9 bytes
DOUBLE - and it will take you 8 bytes per record
So DOUBLE it's a good choice...
Of course depending on what you do with the numbers the separation could
provve better even if you loose one byte pe record !
Gabriel PREDA
- Original Message -
I think you should use: latin1_general_ci and on columns with spanish you
should use latin1_spanish_ci.
English, French, Portuguese not having a separate collation I believe that
they are included into latin1_general_ci ?
Please observe the last part from a collation name: case sensitive (_cs) .
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