mysql count query
I have the following table: mysql> SELECT * FROM consumer1; Service_ID | Service_Type | consumer_feedback ----------------------------------------------- 31 Printer -1 34 Printer 0 31 Printer 0 34 Printer 1 34 Printer 1 34...
mysql
How to best handle exception to repeating calendar events
I'm working on a project that will require me to implement a calendar. I'm trying to come up with a system that is very flexible: can handle repeating events, exceptions to repeats, etc. I've looked at the schema for applications like iCal, Lotus Notes, and Mozilla to get an idea of how to go about implementing such a system. Currently I...
get state and county a city belongs to with geonames database?
i have downloaded whole database from geonames.org and imported all countries into mysql. i wonder how i can get the continent, country, state, county when i got a city's id? cause i want to make a cascading list menu with these information. thanks! ...
Convert the mysql table details to an Excel (.xls) or comma separated file (.csv) using Python
Hi, I want to convert the mysql database table contents to an Excel(.xls) or comma separated file(csv) using python script... Is it possible? Any one can help me? Thanks in advance, Nimmy ...
how to know mysql my.cnf location
please tell me is there any mysql command to determine the my.cnf configuration file location just like phpinfo() to determine php.ini file. Thank you. ...
MySQL slow queries
The MySQL slow query log often shows a bunch of following entries in sequence. SET timestamp=1268999330; commit; # User@Host: username[username] @ localhost [] # Query_time: 4.172700 Lock_time: 0.000000 Rows_sent: 0 Rows_examined: 0 SET timestamp=1268999330; commit; # User@Host: username[username] @ localhost [] # Query_time: 3.628924...
mysql db image convert to file
Hi i am writing a converter from Oracle to mysql In Oracle the images are stored in db. I want to read the content of the image and save to file system I suppose that i have to read the blob entry and using php file commands create the file (am i right) What about image type. Should i save as jpg (what if the store image is not jpg) ...
Is copying /var/lib/mysql a good alterntive to mysqldump?
Since I'm making a full backup of my entire debian system, I was thinking if having a copy of /var/lib/mysql directory is a viable alternative to dumping tables with mysqldump. are all informations needed contained in that directory? can single tables be imported in another mysql? can there be problems while restoring those files on a ...
Select from mysql by day with different timezones (php)
I'm storing leads in a database, and each lead has a datetime field with a PST timezone based date & time. I want my user to be able to display all leads from a certain date (e.g. today, yseterday), and choose the timezone. E.g. if I want to see all leads that were generated yesterday in EST timezone, I need to first convert (or read) ...
flushing database cache in SWI-Prolog
We are using swi-prolog to run our testcases. Whenever the test starts, I am opening the connection to MYSQL database and storing the Name of the Test hat is being done and then closing the DB. These tests run for about 2 days continuously. After the tests are done, the results basically gets stored in folder in the server. There is a pr...
Setting an empty default value for a char-column in MySQL?
Hi In phpMyAdmin I have a char(32) column that has no default value(ie. Default: None). When I try to insert data through a SQL query, it throws out an error saying that the column "doesn't have a default value". I need it to be empty, so instead I've just set it's default value as "As defined: " and then nothing in the value field. Is ...
Best practices for storing & selecting time/date with php & mysql?
I often find myself storing data in a mysql database, and then wanting to display all sorts of stats about my data, specifically stuff like 'how many rows do I have for this date, or that date'. Does anyone know of (or could write) a good tutorial on this subject? Ideally a good tutorial would overview: Best practices when storing th...
MySQL - how long to create an index?
Can anyone tell me how adding a key scales in MySQL? I have 500,000,000 rows in a database, trans, with columns i (INT UNSIGNED), j (INT UNSIGNED), nu (DOUBLE), A (DOUBLE). I try to index a column, e.g. ALTER TABLE trans ADD KEY idx_A (A); and I wait. For a table of 14,000,000 rows it took about 2 minutes to execute on my MacBook Pro,...
select rows with column that is not null?
by default i have one column in mysql table to be NULL. i want to select some rows but only if the field value in that column is not NULL. what is the correct way of typing it? $query = "SELECT * FROM names WHERE id = '$id' AND name != NULL"; is this correct? ...
Help with sql query
I have two tables: subject and student. I'm trying to count the number of subjects enrolled by each student. How do I do that?I'm trying the code below but it doesn't give the answer I need. Please help. SELECT COUNT( subject.SUBJECT ) , student.IDNO, student.FIRSTNAME, subject.SUBJECT FROM student, subject GROUP BY subject.SUBJECT LIMI...
select mysql data using MAX
I have a testdata like this: DROP TABLE SELECT_PASS; CREATE TABLE SELECT_PASS(ID INT(20),TESTCASE VARCHAR(20),RESULT VARCHAR(20)); INSERT INTO SELECT_PASS VALUES(1,"TC1","PASS"); INSERT INTO SELECT_PASS VALUES(2,"TC2","PASS"); INSERT INTO SELECT_PASS VALUES(3,"TC3","INCONC"); INSERT INTO SELECT_PASS VALUES(4,"TC1","FAIL"); INSERT INTO S...
ORDER BY column_name help (via link in HTML table view) (PHP MySQL
My output for my table in HTML has several columns such as userid, name, age, dob. The table heading is simply the title of the column name, I want this to be a link, and when clicked, the selected column is sorted in order, ASC, and then DESC (on next click). I thought this was pretty straight forward but I'm having some difficulty. S...
Should I use BIT(1) or BOOL?
Mysql has two types that can hold boolean data, bit and bool. Bit(1) seems more logical, because that has to be 1 or 0, bool is, according to the specs, the same as saying tinyint(1) ...
mysql query: SELECT DISTINCT column1, GROUP BY column2
Right now I have the following query: SELECT name, COUNT(name), time, price, ip, SUM(price) FROM tablename WHERE time >= $yesterday AND time <$today GROUP BY name And what I'd like to do is add a DISTINCT by column 'ip', i.e. SELECT DISTINCT ip FROM tablename So my final output would be all the columns, from all the rows ...
MySQL UTC Date format
I am pulling data from Twitter's API and the return date is UTC in the following form: Sat Jan 24 22:14:29 +0000 2009 Can MySQL handle this format specifically or do I need to transform it? I am pulling the data using Python. ...