how to convert string to integer??
- by Codenotguru
how to convert string to integer??
for ex:
"5328764",to int base 10
"AB3F3A", to int base 16
any code will be helpfull
Search Results
Search found 58168 results on 2327 pages for 'mysql real escape string'.
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A MySQL schema parser in Java?
- by Richard
Hi all, Does anyone know whether there is a java library for parsing a MySQL schema? In code I want to be able to determine the tables and fields specified in a schema. Or am I going to have to write my own? Thanks Richard.Read the article
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mysql - funny square characters added to the value when inserting it into table
- by stone
Hi, I have a php script that inserts values into mySQL table INSERT INTO stories (title) VALUES('$_REQUEST[title]); I checked the values of my request variables before going into the table and it's fine. But when I add title=john to the table for example, I get something like this: title = "[][][][]john" and when I extract the value, it's a newline then john. I have my columns set to utf-8, I tried swedish character set as well. Note: I don't get this error when inserting values from the phpMyAdmin commandlineRead the article
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mysql and .net: when using tableadapters I'm getting MySqlException "insert command denied for user"
- by Deveti Putnik
Hi! I am using mysql as db for my asp.net application. Here are the facts: I am using connection string from web.config which has both username and password. I can do SELECT with tableadapter. When I am trying to do INSERT with tableadapter, I am getting "mysqlexception insert command denied for user" error When I try to do INSERT programatically, i.e. using connection, command object, etc. everything is fine. In this case, I'm reading connection string from web.config, too. This can be only applied to GoDaddy hosting, but on local machine I don't have this kind of problems. Can anyone suggest what can I do to make it work on GoDaddy hosting? Regards, DRead the article
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How does MySQL's ORDER BY RAND() work?
- by Eugene
Hi, I've been doing some research and testing on how to do fast random selection in MySQL. In the process I've faced some unexpected results and now I am not fully sure I know how ORDER BY RAND() really works. I always thought that when you do ORDER BY RAND() on the table, MySQL adds a new column to the table which is filled with random values, then it sorts data by that column and then e.g. you take the above value which got there randomly. I've done lots of googling and testing and finally found that the query Jay offers in his blog is indeed the fastest solution: SELECT * FROM Table T JOIN (SELECT CEIL(MAX(ID)*RAND()) AS ID FROM Table) AS x ON T.ID >= x.ID LIMIT 1; While common ORDER BY RAND() takes 30-40 seconds on my test table, his query does the work in 0.1 seconds. He explains how this functions in the blog so I'll just skip this and finally move to the odd thing. My table is a common table with a PRIMARY KEY id and other non-indexed stuff like username, age, etc. Here's the thing I am struggling to explain SELECT * FROM table ORDER BY RAND() LIMIT 1; /*30-40 seconds*/ SELECT id FROM table ORDER BY RAND() LIMIT 1; /*0.25 seconds*/ SELECT id, username FROM table ORDER BY RAND() LIMIT 1; /*90 seconds*/ I was sort of expecting to see approximately the same time for all three queries since I am always sorting on a single column. But for some reason this didn't happen. Please let me know if you any ideas about this. I have a project where I need to do fast ORDER BY RAND() and personally I would prefer to use SELECT id FROM table ORDER BY RAND() LIMIT 1; SELECT * FROM table WHERE id=ID_FROM_PREVIOUS_QUERY LIMIT 1; which, yes, is slower than Jay's method, however it is smaller and easier to understand. My queries are rather big ones with several JOINs and with WHERE clause and while Jay's method still works, the query grows really big and complex because I need to use all the JOINs and WHERE in the JOINed (called x in his query) sub request. Thanks for your time!Read the article
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Dealing with PHP server and MySQL server in different time zones
- by Kyle Noland
For those of us who use standard shared hosting packages, such as GoDaddy or Network Solutions, how do you handle datetime conversions when your hosting server (PHP) and MySQL server are in different time zones? Also, does anybody have some best practice advice for determining what time zone a visitor to your site is in and manipulating a datetime variable appropriately?Read the article
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Populate a jTable Using MySQL
- by Nathan Campos
I have a project with a jTable called AchTable, that is like this: +-------+------+ | File | Type | +-------+------+ | | | | | | | | | +--------------+ And I have a mySQL table that is like the same, then I want to know how could I populate the jTable.Read the article
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PHP and MySql trouble
- by Espen Arnoy
I am having trouble making this seemingly simple MySql query work. Can anyone spot the problem? <?php include "config.php"; $offerid = $_POST["offerid"]; $ip = $_SERVER["REMOTE_ADDR"]; mysql_query("INSERT INTO voted (offerid,ip) VALUES (".$offerid.",".$ip.")"); ?>Read the article
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can we use something IN and something NOT in mysql
- by JPro
I want to know if I can use something like this : If yes, then what will be order ? I dont seem to understand quite well the explain plan of mysql Select * from results where TestCase NOT IN (select TestCase from results where Verdict <> 'PASS' and StartTime > DATE_SUB(NOW(), INTERVAL 2 MONTHS)) and TestCase IN (Select TestCase from testcases where Type = 'NONOS') EDIT : Also how can I order by StartTime to display the latest first?Read the article
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MYSQL - Rows to Columns
- by Bob Rivers
Hi, I tried to search posts, but I only found solutions for SQL Server/Access. I need a solution to MYSQL (5.X). I have a table with 3 columns: hostid, itemname, itemvalue. If I do a select, it will return 1 A 10 1 B 3 2 A 9 2 C 40 How do I query the database to return something like A B C 1 10 3 2 9 40Read the article
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MySQL Triggers to Disable A User Account
- by Mike D
I am trying to create a MySQL Trigger to disable someone's account if they have logged in to the site 3 times. I have tried to create this trigger using the following code, but it is not setting is_active to 0 no matter what times_logged_in is. Any help would be appreciated. CREATE TRIGGER updateTrigger AFTER UPDATE ON users FOR EACH ROW BEGIN UPDATE users SET is_active=0 WHERE NEW.is_code=1 AND NEW.times_logged_in>=3 AND NEW.user_id=user_id; END;Read the article
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[mysql] diff between tables
- by www.yegorov-p.ru
I have two tables, with the same structure, for example: table "first' with columns 'a','b','c' and table 'second' with the same columns. How to find difference betweet those two tables? Of course, I can make some script on python, that will make set(a)-set(b), but I think there is some way to do it in mysql.Read the article
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PHP: How to check if query string or POST vars contain same var twice
- by thomasrutter
It may sound strange, but in my PHP application I need to check if the same variable name has been declared more than once in the query string or POST variables, and return an error value if this is the case. If my application doesn't return an error in this case, it fails a compliance check. When accessing vars using $_GET, $_POST, etc, PHP only returns the last value given for each variable name. I can't find a way to tell if any variable appeared more than once. I simply need to find out if the query string or the variables in the POST body contained the same variable name more than once, whatever the values.Read the article
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mysql create procedure script
- by user293487
I am a bit confused with mysql create procedure script. My script looks like as follows: DELIMITER // DROP PROCEDURE play; CREATE PROCEDURE play() BEGIN insert into hi (name,id)VALUES ('apple','2010'); END // It does not insert into table hi.Read the article
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NHibernate MySQL Mapping Set Column Type
- by LnDCobra
In my MySQL database, I have the following column type. Field | Type | Null | ---------------------------------- Column_priv | set('Select','Insert','Update','References') | No | And I cannot figure out what to map this to. Can anyone tell me how I can map this to something?Read the article
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MySQL query advice
- by vasion
I am lost in MySQL documentation. I have a table with votes - it has these columns id song_id user_id created I cannot find the query which will process the information and output the 10 most voted songs in a given time period. What is it?Read the article
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Problem reading from 3 tables in mysql
- by user225269
What do I do, I need to fetch data from 3 tables in mysql, here is my current query. All of the tables contain the IDNO which has 03A45 number. But this query isnt returning any results: SELECT * FROM father, mother, parents WHERE father.IDNO=mother.IDNO=parents.IDNO AND mother.IDNO='03A45' AND father.IDNO='03A45' AND parents.IDNO='03A45' What would be the correct query for this? All of the tables have the IDNO as primary key.Read the article
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varchar comparison in SQL Server
- by Ram
I am looking for some SQL varchar comparison function like C# string.compare (we can ignore case for now, should return zero when the character expression are same and a non zero expression when they are different) Basically I have some alphanumeric column in one table which needs to be verified in another table. I cannot do select A.col1 - B.col1 from (query) as "-" operator cannot be applied on character expressions I cannot cast my expression as int (and then do a difference/subtraction) as it fails select cast ('ASXT000R' as int) Conversion failed when converting varchar 'ASXT000R' to int Soundex would not do it as soundex is same for 2 similar strings Difference would not do it as select difference('abc','ABC') = 4 (as per msdn, difference is the difference in the soundex of 2 character expressions and difference =4 implies least different) Is there any other way of doing it ?Read the article
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Need to replace HTML single-quote entity in MySQL
- by modulaaron
Hi, I currently have the following MySQL statement to replace the HTML entity for a single quote with an actual single quote: update photo_galleries replace(title, ''', '\''); This statement returns an error. I have tried adding additional backslashes, but this does not help at all. I want to run this command using pure SQL (no PHP, etc.). Any suggestions are welcome and appreciated. Thanks.Read the article
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Not-quite-JSON string deserialization in Python
- by cpharmston
I get the following text as a string from an XML-based REST API 'd':4 'ca':5 'sen':1 'diann':2,6,8 'feinstein':3,7,9 that I'm looking to deserialize into a pretty little Python dictionary: { 'd': [4], 'ca': [5], 'sen': [1], 'diann': [2, 6, 8], 'feinstein': [3, 7, 9] } I'm hoping to avoid using regular expressions or heavy string manipulation, as this format isn't documented and may change. The best I've been able to come up with: members = {} for m in elem.text.split(' '): m = m.split(':') members[m[0].replace("'", '')] = map(int, m[1].split(',')) return members Obviously a terrible approach, but it works, and that's better than anything else I've got right now. Any suggestions on better approaches?Read the article
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MySQL fields terminated by tab
- by Brian
I am trying to upload a tab delimitted file with MySQL. I want a query something likes this: LOAD DATA LOCAL INFILE 'file' INTO TABLE tbl FIELDS TERMINATED BY 'TAB' Is there something I can subsitute for TAB to make this work?Read the article
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Enable binary logging MySQL
- by onurozcelik
How exactly can I enable binary logging on MySQL server. Conf.file? Server Startup Parameter? If possible give me example.Read the article
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What is the mysql 5.5 equivalent for the sys.dm_fts_index_keywords_by_document in sql 2008
- by djsurge
I'm making a web application that uses the data in the sys.dm_fts_index_keywords_by_document. I'm interested how many times a given term occurs in each string that is indexed. For example, I have a table with a column called comments, the table has various strings in the comments field. When I make that column full text searchable, the dm_fts_index_keywords_by_document is created and I can see the word per document data. Can i do the same thing in mySQL?Read the article
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Using MySQL on Visual Studio 2008
- by Diego
I am using the ODBC connector to access a MySQL db from visual studio 2008 and i am facing performance problems when dealing with crystal reports and to solve this i need a native connector to visual studio. if someone has had a similar problem and knows a solution or tools ( freeware preferable ) , i would be really grateful.Read the article
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How to determine which my.cnf mysql is using
- by japancheese
Hello, Is there a way I can figure out which my.cnf mysql is currently using? The reason is because it's using the correct socket file to connect, but I can't figure out exactly which (if any) my.cnf it's using or trying to use so I can manually set the correct path on my local machine.Read the article
