Index On Long Column And Auto Sequence In Mysql
How do we create index on long columns in Mysql? we want to store the timestamp component of the data field in a long data type and be able to index on it.
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Index :: Data Too Long For Column Name In Row XXX
I read that it's preferable to shorten the length of an index if it's based on a varchar. But if I shorten a column defined as: name varchar(40) with an index of: index ix_name (name(10)) and then I try to do an insert into the table a "name" longer than 10 (but less than 40) the insert will fail with the error message "data too long for column name in row XXX". what am i doing wrong? (mysql 5.1)
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Sending BLOB To MySQL Get Error &"Data Too Long For Column&"
I am writing an application in VB6 that requires that an image be saved into a MySQL table. Whenever I run the app I get the message shown above. The app is being developed in VB6, as this is what I am used to. VB6 has the latest patch and I am using the latest ODBC connector for Mysql. There mus be something that I am doing wrong as all of the other fields insert correctly.....
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Data Too Long For Column
Running 5.0.37-community-nt on windows 2003 server. Having problems getting data to insert into blob table. I receive data too long for column. The file I'm pushing up is 578k. I can do smaller files, like 10k. All this worked until I upgraded from linux to windows and mysql from 4.0.16. Orginally the inserts into this table would cause the entire database to crash. Windows event log showed a DR WATSON error. The mysql error log showed a normal shutdown. Should be noted that this failure actually occured without even naming the blob field name, ie 'INSERT INTO TABLE(ID) VALUES('1')'. I went ahead and just dropped the blob column, added it back with same name, and am now we getting the 'too long for column' message. I've read that this could be a character set issue, however in changing it to what one of the mysql engineers suggested, it still didn't work, and also other queries began failing. ie Code:
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#1406 - Data Too Long For Column
I want to use a open source software, before the installation. I need to create the database. I can actually, create the database in a good way. When i add the data, i give me '#1406 - Data too long for column 'e_content' at row 1 ' error for the database table gui_element -> 'e_content' field, is set as LongText datatype. I'm not sure this is the limitation of mysql or not. I'm guess it may be some memory problems. Can anyone helps me. i have about 2.00MB sql file, and one of the insert statement caused this error as below: ================================================================================= INSERT INTO gui_element( fkey_gui_id, e_id, e_pos, e_public, e_comment, e_element, e_src, e_attributes, e_left, e_top, e_width, e_height, e_z_index, e_more_styles, e_content, e_closetag, e_js_file, e_mb_mod, e_target, e_requires, e_url ) VALUES ( 'wms_australia', 'content', 2, 1, 'text', 'div', '', '', 10, 50, 500, 30, 2, 'font-family: Arial, Helvetica, sans-serif; font-size : 12px; text-decoration : none; color: #808080;', 'This GUI is an OGC service catalog container and does not provide a map user interface. Please use the (<a href=''javascript:history.back()''>back</a>) link to select another GUI form your list or log off to log on using another account (identity).<br><br>Diese GUI ist ein OGC Service Katalog Beh�lter (Eimer, Container, nimm was Du meinst) und beinhaltet keine Kartenoberfl�che. Verwenden Sie diesen (<a href=''javascript:history.back()''>back</a>) Verweis, um aus der Liste eine andere GUI auszuw�hlen oder melden Sie sich ab, um sich mit einer anderen Kennung anzumelden. ', 'div', '', '', '', '', '' );
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A Date Column That Auto-updates When Any Column In The Row Is Updated
Let's say I have a table with several columns. I would like to add a column called "date last updated". How this would work is that any time one of the other columns in that row was updated, the 'date last updated' column would update. I *know* how to do this with PHP, but here is the special part... Is there a way to have this automatically just within MySQL, so that EVEN IF if update a column manually through the command line or PHPmyAdmin, the 'date last updated' field updates.
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Special Characters :: Data Too Long For Column Xxx ...
I'm new working with mySQL and I'm having trouble dealing with special characters... Every time I try to insert data on the database containing special characters (i.e. "não" ou "já") the dbms returns the error: "Data too long for column 'xxx' at row n.". I use MySQL 5.0 and Windows XP SP2 Pro. Here are the values of the variables like "character%" and "collation%" (The charset directory is ok, only the file utf8.xml is not in there, but it's compiled into the dbms so I think that´s not a problem... hope I'm not wrong): Code:
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Primary Key On Long Varchar Column + Utf8
I wish to create a table with 4 columns (varchar(10),varchar(512),int(11),varchar(16)) with primary key composed by the three first columns. With default charset,it's work,but If I define default charset to utf8, the following error occured: ERROR 1071 (42000): Specified key was too long; max key length is 999 bytes I guess it's because of utf8 which makes char encoded in 16 bits instead of usual 8, leading to all fields size > 999 bytes, even if utf8 is just use on second column (max length 512). Is there any way to set maximum key length to something bigger than 999 bytes?
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Data Too Long For Column At Row 1. Error 1406
get the following error whilst doing a jdbc insert: data too long for column at row 1 1406 The row throwing the error is a BLOB. The data I am inserting is a fairly large XML String, though I doubt it is beyond the BLOB limit or even close as I can easily copy it into notepad and execute the same query from mysql query browser. Mysql 5.0.51 win2003
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#1406 - Data Too Long For Column[From China]
character set client utf8 character set connection utf8 character set database utf8 character set filesystem binary character set results utf8 character set server utf8 character set system utf8 all my database is use utf8_general_ci,when i import a .txt file into the database,the error is:#1406 - Data too long for column....,and the row is chinese,i have read many articles but don't solve the problem,hope you can help me!may you can understand my poor english.Thanks.
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Reodering Auto Increment Index
This seems like a simple request but I cant' fnid a way to do it. I have searched the forums and haven't found a thread that's like this. I have a large table with and Auto Increment Index. Over time (upgrades and backup/recovery procedures) the table is now out of order. i.e. the index is no longer sorted 123... How can I re-order the table by the index (obviously some records have been deleted so the index has missing numbers).
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BLOB - Error 22001 Data Too Long For Column
I'm using .net connector and attempting to store a c# byte[1200] array into a BLOB field in my InnoDB table. I'm getting the error: {"#22001Data too long for column '_ch1RawData' at row 1"} If I change the array to have a length of 120, it seems to work OK. This makes no sense to me, 1200 isn't too big? From what I have read, a BLOB's max size is 2^16 + 1 which puts me safely in the valid size range for this array.Here is a snip of code that I'm using to save the blob: <code> MySqlCommand command = new MySqlCommand( Settings.Default.AddTestResultSprocName, connection); command.CommandType = CommandType.StoredProcedure; //.. code that opens the connection, etc command.Parameters.Add( new MySqlParameter("_ch1RawData", ch1Raw)); command.ExecuteNonQuery(); </code> Does anyone see a problem with this?
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Auto Column
I want to select a single row called "row1" but let mysql auto append a NON-exist column call "row2" of it. And i want that non-exist column be auto-increment. how to? If i "select row1 from mytable", then i get ----------- - row1 - ----------- - a - - b - - c - - d - ----------- but i want: ---------------------- - row1 -- row1 - ---------------------- - a - 1 - - b - 2 - - c - 3 - - d - 4 - ----------------------
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Multiple Auto Increments In One Column
Is it possible to have multiple auto increments in one column? Say I have two tables... 1. table 'messageboards' with fields ('id' , 'name') 2. table 'messagethreads' with fields ('id' , 'messagethread' , 'messageboard_id') The 'messagethreads.id' column could have multiple auto increments. Then I could easily query a messageboard with ("SELECT * FROM messagethreads WHERE messageboard_id = 1 ORDER BY id"). Each thread would return an id starting from number 1. If MySQL does not support multiple auto increments, I guess the only other solutions are... - Create a new table for every 'messageboard' with an auto increment column and join them to 'messagethreads' for a query. Id like to use as few tables as possible though. - Use transactions or table locking to generate the auto increment value. Id like to not use either for performance reasons.
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Alter Column To Auto Increment
I have a table that has data in it. The table had an auto increment column but I had to take auto increment off to insert some old data from a backup site. I get an error when I try to alter table to make the column auto increment again. I need some assistance.
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Is It Possible To Force A Zero Into Auto-increment Column?
I want to add MySQL support to a SQL Server application that contains many IDENTITY (auto-increment) columns with zero in the id field. We use that as a proxy for no entry to keep joins from dropping out entries with no value. Is there any way to insert a zero into an auto-increment column? I know you can specify a specific value in the insert if it does not already exist and if it's 0 or no entry is specified in the insert then you get the next available value. How would you force a zero into the column?
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Auto Increment Based On A Column Value?
I did a bit of searching but couldn't find anything, so: If I have a table structure similar to this: Code: table: productImages idfilenameproductIdorder 110234.jpg121 213702.jpg122 323674.jpg123 498373.jpg151 544126.jpg152 Would it be possible to create an auto increment value in the 'order' column, based on the 'productId' column? As an example, if I insert another record with filename = 12345.jpg and productId = 12, then it would set order = 4 based on the previous three entries for that product?
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Alter A Primary Key Auto Increment Column
I need to change my primary key column type from smallint to int. I have tried: ALTER TABLE livegroup MODIFY id INT UNSIGNED NOT NULL AUTO_INCREMENT; But get an error message certainly since my id-column is primary key and references other tables as well. This is my table definition livegroup ( id SMALLINT UNSIGNED NOT NULL AUTO_INCREMENT, type VARCHAR(60) NOT NULL, name CHAR(60) NOT NULL, public TINYINT NOT NULL, creator SMALLINT UNSIGNED NOT NULL, lastmodified TIMESTAMP(8), PRIMARY KEY (id), INDEX (creator), FOREIGN KEY (creator) REFERENCES user (id) ON DELETE CASCADE ) TYPE=INNODB; livegroups ( data_id SMALLINT UNSIGNED NOT NULL, livegroup_id SMALLINT UNSIGNED NOT NULL, PRIMARY KEY (data_id, livegroup_id), INDEX (data_id), INDEX (livegroup_id), FOREIGN KEY (data_id) REFERENCES livedata (id) ON DELETE CASCADE, FOREIGN KEY (livegroup_id) REFERENCES livegroup (id) ON DELETE CASCADE ) TYPE=INNODB;
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How To Disable Auto Truncation Of Char Binary Column
Why is a single space truncated in the following example? Leif alter table CURRENCY change column THOUSANDS_SEP THOUSANDS_SEP char(1) binary not null , type=MyISAM UPDATE CURRENCY SET THOUSANDS_SEP = ' ' WHERE NAME = 'SEK' SELECT LENGTH(THOUSANDS_SEP) AS L FROM CURRENCY WHERE NAME = 'SEK' Result: L = 0
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Data Truncation: Data Too Long For Column 'DESCRIPCION' At Row 1
I'have this problem when i try to insert a simple text in a column VARCHAR (40). If I exceed the 14 chars size, this exception is fired. I'm working with the mysql 5.0.41 and fails in the query browser and in my java app with the conector 5.0.6. I'd tried to change to UTF my table, change to a VARCHAR(100),change to CHAR (100) and nothing it's function.
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How To Create A Sequence In MySQL
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Mysql Execution Sequence
I need to retrieve the last value from a column in a mysql table, perform some actions on it, then add 1 to the original value and store a new entry. I am worried that if multiple users access the database at the same time I will end up with duplicated 'new values'. Does mysql complete execution of a script before it allows access to another user or do I need to 'lock' the table in some way while the script executes?
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Can I Have Both 'Unique' & 'Index' On A Column?
I have a mysql table and I use wizmysqladmin to make modifications to it. I have declared 'Index' on a column while setting up the table. later, I understood that elements in that column are 'unique'. So, I have declared 'unique' on that column. Now, that column is having both 'index' and 'unique' is it ok or shall I remove one of the two?
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Multi-column Index, Is It Slow ?
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Changing A Column To Match An Index
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Finding Sort Order For An Existing Key Column Associated With An Index
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Unable To Create Full Text Search Index On A Column
I have installed MySQL 5.0 on my WinXP machine. I have created a test schema in which I have created a test table as follows: Test_Table { Id => Integer and Primary Key Name => Char(255) Address => Char(255) Tags => TEXT } Now I want to create a full text seach index on column Tags, but when ever I try to execute following SQL statement: ALTER TABLE `TEST_TABLE` ADD FULLTEXT `Index_FTS`(`Tags`); I get following error: Error while executing query: ALTER TABLE `TEST_TABLE` ADD FULLTEXT `Index_FTS`(`Tags`); MySQL Error Number 1283 Column 'Tags' cannot be part of FULLTEXT index. My table is MyISAM based table.
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MySQL Taking Too Long
I'm trying to run a php script written by someone else, not me, and it's getting stuck in a particular step. Actually it isn't getting stuck per se, but the browser is, because it's taking forever to return the results back to the browser. Here's the line that's responsible for this: $users = $db->query_return_array("SELECT * FROM user"); It's getting stuck because in my database I have over 60,000 records. Now, I'm just wanting to get over this step (it's an upgrade script), not looking for fancy proper methods of php coding. What alternative ways are there for me to prevent the browser from timing out? I'm guessing some way of looping through the records, and updating the client with simple update characters to prevent it from timing out.
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How To Insert A Long Xml String In Mysql
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Mysqldump Long Format (mysql 5.0)
Does anyone know how to get mysqldump to dump in the old style dump format? Right now I get dumps which look like: INSERT INTO cart VALUES ((a,b,c),(d,e,f),(g,h,i),...,(x,y,z)); What I want is the old INSERT INTO cart VALUES (a,b,c); INSERT INTO cart VALUES (d,e,f); INSERT INTO cart VALUES (g,h,i); ... INSERT INTO cart VALUES (x,y,z); The new style is somewhat problematic when trying to diff database dumps. I don't want to have to edit the dump file to do this. I don't see an option for it offhand.
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MySQL Keeps Going Long After Code Stops
When some queries are executed on a server I have setup MySQL will continue to use up CPU cycles 5-10 minutes after the PHP code that executed the query has long since stopped. The browser page will be loaded and no further PHP code will be active on the entire server that could call MySQL into usage, yet MySQL will continue to use upwards of 80-90% of the available CPU processing power for that 5-10 minutes afterward. In fact, if the PHP page only takes a couple of seconds to load with next to no CPU usage then after it has finished loading MySQL will start utilizing the CPU for all it is worth as if it is trying to complete some task that only it knows about. This is on an isolated server so I know I am the only one using it. This seems to happen most often when a LEFT JOIN is executed, though the query itself is very quick and returns the data in less than a second. I am running MySQL 5.0.15 with Apache 2.0.54 and PHP 5.0.4 on Windows XP SP2. I know this is terribly obscure sounding, but if anyone has any ideas where I could start to look for the source of the problem I would appreciate it. I know it is not in the code because if I run the code on a Linux server this doesn't happen, not to mention the fact that, as I said, the PHP code itself finishes without a hitch.
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Long Text Into A MySQL Field Error
I am having a problem putting a certain length of text from a textarea form element into a mySQL field. The field is set to LONGTEXT but I get an error. Whne I shorten the text it writes to the DB with no problem. I am getting a long strng, perhaps 200 characters or more into a variable that will then be written to an mySQL DB but I am getting an error in the DB. How can I set the field to accept more than 400 or 700 text characters?
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How To Prevent MySQL Queries From Taking Too Long
I have a very busy database with some tables having hundreds of thousands of records. I am running MySQL 5.0.16 on Windows. Some of the queries running on my database are not fined-tuned enough, and need improvement. However, the system is live in production and I am looking for a way to prevent MYSQL from committing Harakiri, i.e. from running very slow queries forever, taking the cpu to 50% and beyond for hours. My scripting language is PHP. I found that after a while the end user receives a timeout on the browser, but MySQL continues trying to run the query, sometimes for hours. My question is, is there a way to specify a timeout for MySQL so that it will abort any queries that it is running that have not returned a result by then. The end user is no longer around anyway, so I am looking for a way to protect the database resources (and in parallel I will start investigating how to optimize the slow queries).
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FullText Search :: #1191 - Can't Find FULLTEXT Index Matching The Column List
I have a table that was created and populated first and I have altered the table later to include the full text index.I get an error when I do a full text search like this: select name from table where match(name, address1, address2) against('text'); The error I receive is: #1191 - Can't find FULLTEXT index matching the column list But when I do the search with the in boolean mode it works just fine.Is that right or am I doing something wrong?? select name from establishments where match(name, address1, address2) against('restaurant' in boolean mode);
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Increment Column Without Auto Increment
What's the fastest way I can use an INSERT statement to insert a new record including an 'ID' which is one greater than the current highest ID in the table. Is this possible without first doing a SELECT query? I'll be using php too btw, so if there's a way to do this in php, then I'm open to such suggestions also.
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