MYSQL :: Using Unix_timestamp Function

UNIX_TIMESTAMP()
I have a timestamp field and the date & time appear fine in it through phpMyAdmin, however when I do a SELECT UNIX_TIMESTAMP(field), it returns a unix timestamp for me to use in PHP but it is in the future. Any ideas why or how I can fix this?

Unix_timestamp()
I have columns called repeat_date and repeat_month and I would like to
use the info within them in my WHERE clause as part of a
UNIX_TIMESTAMP().

Essentially, I would like to say something like:

SELECT * FROM table WHERE
UNIX_TIMESTAMP(repeat_date-repeat_month-$curYear 0:00:00) > $date_start
AND UNIX_TIMESTAMP(repeat_date-repeat_month-$curYear 0:00:00) <
$date_end

The variables $curYear, $date_start and $date_end will have been set
previously with PHP.

I'd like to use the information in each row within the
UNIX_TIMESTAMP().
Is this possible? If so, how would I do it?

Unix_timestamp()
I have several tables where most have a timestamp column. Normally I set up a varchar field, then add a timestamp to the field with mktime() via PHP. I've been reading about mysql's UNIX_TIMESTAMP(), and it says that (just like PHP) it is the seconds since 01/01/1970. I tested an example from the manual where it shows:

875996580 = 1997-10-04 22:23:00

but when I test it in php, It comes up 6 hours off:

875996580 = 1997-10-04 16:23:00

Whats going on here? It seems that I cannot trust mysqls' interperetion of the unix timestamp, and will have to rely on PHP to handle date searches.

Newb: Can You Do This With UNIX_TIMESTAMP?
Is this valid:

UNIX_TIMESTAMP(DATE_ADD(now(), INTERVAL -15 MINUTE)) ?

Getting Records When Using UNIX_TIMESTAMP
I'm currently using this query:

SELECT poker_room,game_type,limit_type,UNIX_TIMESTAMP(date_time),date_time,buyin_desc,description,url FROM poker_tourneys ORDER BY date_time ASC LIMIT 0, $nrpp

My question is... can I pull all records where the converted "date_time" is > a certain time?

I tried the below but it didn't seem to work:

$time = time();

SELECT poker_room,game_type,limit_type,UNIX_TIMESTAMP(date_time),date_time,buyin_desc,description,url FROM poker_tourneys WHERE UNIX_TIMESTAMP(date_time) > '$time' ORDER BY date_time ASC LIMIT 0, $nrpp

Btw... I'm using PHP as my server-side language.

MySQL Unix_timestamp
I have a MySQL query used to compute the total time a device is within a expected location. The loglocations table contains a history of every device's location history within the DB. the starttime/endtime are datetime fields which represent how long a device is in a partcular location for that time duration. The macaddress is the ID of the device and is comes from the loghistories table. Both tables are linked by the historyId and uuid respectively:

SELECT (SUM(UNIX_TIMESTAMP(ll.endtime) - UNIX_TIMESTAMP(ll.starttime)) AS DEVICE_TIME FROM loghistories lh INNER JOIN loglocations ll ON (lh.uuid = ll.historyId) WHERE lh.macaddress = ? and ll.locationName = ? and ll.starttime >= ? and ll.endtime <= ?

all the ? marks represent user-inserted information. This query works fine except for in one instance: Some devices have a 'NULL' endtime because the endtime of the device has yet to be determined (still in same location). This causes the sum section of the query to equate to NULL which is of no use to me...is there any way I could somehow append the current datetime value (using NOW() function for instance) for all devices which contain a 'NULL' endtime??

Simple Question About UNIX_TIMESTAMP
UNIX_TIMESTAMP (fieldname) as fieldname
to work, does fieldname have to be a time or timestamp defined field?

Or, is it okay to have a text field as long as the date inside is formatted correctly?

What Is Wrong Here With FROM_UNIXTIME + UNIX_TIMESTAMP
I am using gentoo-AMD64 and the MYSQL server version provided by gentoo is currently 4.0.24

When I am inserting a DATETIME which is in that magic gap during the change from summer time to normal time, MySQL adds a magic hour. My bug, or a MySQL bug?

This is what I am doing:
######################################
mysql> create table a (f1 DATETIME);
Query OK, 0 rows affected (0.07 sec)

mysql> insert into a VALUES (FROM_UNIXTIME(1130631910));
Query OK, 1 row affected (0.00 sec)

mysql> select * from a;
+---------------------+
| f1 |
+---------------------+
| 2005-10-30 02:25:10 |
+---------------------+
1 row in set (0.00 sec)

mysql> select UNIX_TIMESTAMP(f1) from a;
+--------------------+
| UNIX_TIMESTAMP(f1) |
+--------------------+
| 1130635510 |
+--------------------+
1 row in set (0.00 sec)
######################################

I inserted 1130631910 and later retrieve 1130635510?

Convert From UNIX_TIMESTAMP To Formatted Date
I'm holding a UNIX_TIMESTAMP (say, 1110715984) and I would like a way of formatting this in MySql into a date and time.

Convert Unix_Timestamp To DateTime In A Whole Column
I have an old table with a column:

datum varchar(30)
with Unix Timestamps in it.

Now I want to convert it into a new column with DateTime (0000-00-00 00:00:00).

Only have found the syntax to make it the other direction
UPDATE tabelle SET tmpDate = UNIX_TIMESTAMP(DATE_FORMAT(myDateTime,'%Y-%m-%d %T'))
WHERE myDateTime IS NOT NULL

Please can you give me the syntax to convert the whole column from Unix Timestamp to DateTime without loosing my dates.

IF Function,GROUP BY,aggregate Function Problems
Yep, I have all those problems in the title. So I'll explain each one at a time - I did have another thread relating to this very same query but I thought it was time to update where I am with the query because at the moment I feel like I am getting nowhere!

The query I have basically searches through an items_ordered table through each product and checks to see whether the item is VATable or not. This is not where I have the problem though. Where I am really having the first problem is when I am trying to use the IF function to check if the TOTAL of an order is over Â£300. IF it is then I multiply it my 0.95 (i.e. 5% off). With the query below I get no errors but neither do I get the desired result. It's as though it couldn't even see it. =....

Can You Use "UNIX_TIMESTAMP" Outside The Mysql Query?
Hey guys. I was using this code:

mysql_connect($dbhost, $dbuser, $dbpassword) or die("Couldn't connect to server.");
@mysql_select_db($dbname) or die("Couldn't connect to database.");

$q="SELECT poker_room,game_type,limit_type,UNIX_TIMESTAMP(date_time),date_time,buyin_desc,description,url FROM poker_tourneys ORDER BY date_time ASC";
$sql=mysql_query($q);
$num=mysql_num_rows($sql);

mysql_close();

Then using this code to get the results:

while (list($poker_room,$game_type,$limit_type,$dt,$dt2,$buyin_desc,$description,$url)=mysql_fetch_array($ sql)) {
// Blah
}

But I need to only display certain results so depending on the page they are on.. so I was wanting to get each results values with the "mysql_result()" funtion; but I can't figure out how to get the UNIX_TIMESTAMP to work this way.....

Now() Function
I am using now function to get current date when info is added to my table. I am using a hosting provider that is 6 hrs ahead in time zone so i always have to subtract 6hrs to get the correct time. Is there anyway I can format the time to be inserted to my time zone?

Self Run Function/..
I need to delete some records from my table every 5 minutes. I thought that would be better if done via a trigger, function, etc. But I don't know how to fire a trigger every 5minutes or is there any other way to do that?

Using The AVG Function
I am trying to use this query:

SELECT average(price) FROM `data` WHERE id IN ( '3', '3', '6' )

to average the price of items users select. The problem is that when a user selects a value more than once it only includes it in the average once. How can I make it average all the values?

Looking For A Particular Function
I have a Column which consists of only DATE's and an ID code. I want to enumerate all the DATE's of a certain ID to get a grand total of a ID. Does such a function exist?

Avg Function
Why doesn't this work:

SELECT avg(value) as avg_value from playerstats where avg_value = '100' and stattype = 'r' group by avg_value

I'm trying to select the avg_value of 'r' where the avg_value = '100'.

Last Function
How do you get the last row in a grouped query. I have a table with running balances. At the end of the day, I want to find out the last balance.

select *
from accounts
group by date(dateCol)

This always gives me the first row of the grouped column dateCol.

NOW() Function
We are developing a tool here that uses a php script to insert data into a MySQL 5.0.41 database running with the INNODB engine. While tracking a bug we noticed a strange effect.

Each insert query contains a call to the NOW() function to store the create data of the record into a field automatically. Therefore we can expect in my opinion that the timestamps of the records are increasing simultaniously with the autoincrement key of the table. This actually is not the case. On the contrary the timestamps are jumping up and down with large differences. For example we have the record with ID1 that got the timestamp 14 minutes 2 seconds where ID2 got 15 minutes 15 seconds and ID3 14 minutes 9 seconds. How could this be? Does it mean that the server does not execute the statements in the order he receives them? Is it possible that it took more than a minute to execute a simple insert statement?

Max Function
I have a table with name, priority and parent as three columns...I want to get the max(priority) grouped by the parent... I am trying to get name, priority, parent, max(parent) as the four columns in the result...Could some one help me with this

select name, priority, parent from table1
select max(priority) from table1 group by parent

are the two select statements that I wish to combine...is it possible..?

Function In C
I was trying to figure out how would you write a function in MySQL using C. I saw that theres a CREATE FUNCTION syntax but am confused on how to compile and write a C function.
For example if I wanted to write a function that added an extra period after every period and called it ADD_PERIOD() how would I do that.

Example:

x = "joe runs far."
SQLSTRING = "SELECT * from Story where Sentence = '"+ADD_PERIOD(x)+"'";

this would return. joe runs far

SQL IN() Function
so i have a query such as
SELECT first_name FROM users WHERE user_ID IN (5,4,8,19,8,4) and i want the first_name to be retrieved for EACH of the cases (eg. name is repeated twice for 4 and 8)

2 Queries In 1 Function?
Is it possible to query the database twice in the same function?

If so is it possible to use results form the first query IN the second?

Count () Function
Cant anyone tell me why this very basic query won't process.
This is to give a breakdown of Mem.heard 1-12 numbers ("where did you hear about us survey") for ea of the MOrig two user types

EX:
MOrig | heardof | count_heardof

UserA 1 5 (times)
UserA 2 6 (times)
UserB 1 3 (times)
UserB 2 8 (times)

SELECT MOrig, heardof, count ( heardof ) as count_heardof
FROM Mem
GROUP BY MOrig, heardof
ORDER BY MOrig

Search-function
Does anyone happen to know how to select info from the database based on multiple strings like so:

SELECT title FROM food WHERE title LIKE '%New%' AND WHERE title LIKE '%York%' AND WHERE title LIKE '%restaurant%'

SUBSTR() Function
SELECT SUBSTR(message, 0, 20) FROM posts

My goal is to start at the first characters on the far left, and then return 20 chars only. This function for some crazy reason seems to start at the end of the string though, which is stupid, because how do I know where the string starts?

Hidden_field Function
Does mysql 4.0.24 standard have a hidden_field function? I need to maintain state from one form to another and hidden_field is used in a script I have using mysql 3.22. If 4.0.24 doesn't have hidden_field function, what can I use with mysql 4.0.24, which is used on my server?

Date Function
I have a time stamp field in my orders table and I want to form a select statement where it returns all orders with an order time of two weeks ago from the current time or later so I can keep better track of unpaid orders.

Here are the fields for the orders table
orderID
order_time
order_status
etc...

SELECT orderID FROM orders WHERE ???? AND order_status=2 ORDER BY order_time ASC

Thanks for any help. The date functions are a little confusing to me from the manual.

Function ROW_INDEX
I couldn't find a function that numbers the resultset of a query. First row should be 1, second row 2 etc.

I searched for rownum, rowcount, rowindex etc with and without underscore's.

Password() Function
I've created a simple table called users. This table contains four columns. First_Name, Last_Name, User_Name, Password. I've used the password() function when inserting a user. I have read the documentation on using other types of encryption, but it's killing me that I can't get this to work. Robert has a User_Name of "Bob" and a password of password('tomato').

===============================
HOW I ADDED BOB

insert into users values("Robert","Evans","bob",password('tomato'));

1 row added yada yada

HOW I QUERY BOB

select * from users where User_Name="bob" and password=password('tomato');

Empty Set

===============================

That exact same query is in a tutorial for a simple PHP login form, but an empty set is returned even in the command prompt using MySQL by itself, therefore the script cannot move on.

Mysql_query Function
I making a loop of the returned result set from mysql_query, it is very important to know if an update occur during the loop to the table affect the result set of the loop or not ?

I need to loop blindly without see any updates or inserts occur during the loop....

Counting Function
I have a table with a list of names and some are duplicate and I would like to count them?? It's like this:

Drew
Simon
Alli
Tim
Beth
Alli
Simon
Drew
Simon
Simon
Alli

Then to export:
Drew - 2
Simon - 4
Alli - 3
Tim - 1
Beth - 1

How could I go about asking this query?

SELECT COUNT(name) FROM table

??

Random Function?
I would like to know if there is an existing random function I can use to generate a random number so I can concatenate it to a string?

AES_ENCRYPT Function
Essentially I am playing around with the aes_encrypt fucntion to securly store some data in the db. The problem I am having is that I get the following error : Data truncated for column 'foo' at row 1 and the table creating was done with:

CREATE TABLE `foobar` (
`foo` varchar(10000) default NULL
) ENGINE=InnoDB DEFAULT CHARSET=utf8

with a varchar(10000) and doing and AES_ENCRYPT('foo','bar') one would think that it would work. But I suspect that I am doing something incorrectly.

RAND Function
Basically, I have a stored function that is designed to deliver a random 3 digit code. But I need it to be of the format #~#~# (ie, 3~0~7, 5~1~5, etc) So I set up the function to generate 3 random digits and then concatenate them together, using the following lines inside the function:

SET v1 = FLOOR(RAND() * 10);
SET v2 = FLOOR(RAND() * 10);
SET v3 = FLOOR(RAND() * 10);
SET vCode = CONCAT_WS('~', v1, v2, v3);

The function works fine, and gives me back my 3 digit code in the exact format that I want.

However, after testing it out, I've discovered that it isn't entirely random. There are certain combinations that I never end up getting returned from the function. There are basically 1000 different possible combinations, but I'm only ever receiving 800 combinations back. I've loop tested the function to generate literally millions and millions of different codes, and there are certain codes that I just never see. Code:

Function In Index?
I have a table that has a datetime field called (confusingly) 'date', but a lot of my queries do DATE(`date`).

I decided to add an index on DATE(`date`), but it doesn't seem to make much difference in speed. Is it valid to put an index on a function of a field?

Function Transaction
I'm working on a little framework based on SQL, i'm fighting with session becouse i'm need to check if the user is login or not and then if can see the resource or not, it's can be change for each resource. Code:

Stored Function
I managed to make a stored function 'IsEmpty' but when I use the function in a query like:
select * from tblinre where isempty('') ;

it will result in FALSE. when I use use isempty(null) it will result in TRUE.

my stored function

DELIMITER $$

DROP FUNCTION IF EXISTS `bridge`.`IsEmpty` $$
CREATE FUNCTION `IsEmpty`(p VARCHAR(1)) RETURNS tinyint(1)
DETERMINISTIC
BEGIN
RETURN IF(TRIM(p)='' OR p IS NULL,TRUE,FALSE);
END $$

DELIMITER ;

CASE Function
The following excerpt from an SQL Script outputs a table containing a column entitled "TypTitle" containing rows of PASS and FAIL.

Is there a way to change the output column name from "TypTitle" to "RESULT" without changing the database? Code:

DateDiff() Function
I am trying to use the MSSQL function DateDiff('m', date1, date2) in MySQL but mysql do not support the type 'm' or 'd' or 'yyyy'. I do not want to receive the datediff value as a SELECT field e.g.

"SELECT datediff('m',dateofbirth,'2005/06/23') from Dependant WHERE TranID = 3068"

CONCAT Function (bug?)
I'm needed to insert large BLOBs into a database. With the 1MB packet
limit, sending larger amounts of data would be difficult, so I had a neat
idea. I would do an initial insert of an empty record and get the
auto_insert ID from the response, and then loop through, appending data to
the record.

My table is simple. One unsigned int auto_increment field (DataID), and
one long blob field (BinaryData).

When I loop through the data to send, I run:

UPDATE BinaryTable SET BinaryData=CONCAT(BinaryData, 'My binary data
here') WHERE DataID = 35

The binary data I insert I escape null characters, backslashes, single and
double quotes. The data seems to insert fine.

The problem is that as I increase the amount of data in the field, CONCAT
seems to drop all but the last 416k of the data. Thus if I loop through
adding 400k blocks at a time (Which I do) I am left with at most 800k of
data in the blob field.

Using 4k blocks I end up with 419k of data in the field when all is said
and done.

Mysql Function
i am hosting my website on a hosting website server. I made Mysql database there. I noticed one thing when i insert data in tables they have a colum called "function" with drop down box where they have values like ASCII,CHAR,SOUNDEX, UCASE, LCASE, COUNT,AVG any many other.

I don't pick any of them. But I am just wondering if I need to pick either ASCII or char?

Function Abs Doesn't Exist
I nstalled a mysql 5.0 Database on one of my servers but I receive the following error when I want to use a function from MySQL.

create view myView AS
select DATA,TIMED from myTable where ( abs (1138612032902 - myTable.TIMED)*11) >10 ;

And I receive :
ERROR 1305 (42000): FUNCTION MYDB.abs does not exist

I want to know if somebody has faced this error and I appreciate any solutions for this problem.

TRIM Function
My column from a table in sql has value "NEW" and sometimes "NEW ".....thats with 2 spaces behind it...

How do i get rid of it in my sql or asp....someone suggested TRIM??

mysql="SELECT * FROM Test WHERE number='10'"
Set rs= Con.Execute( mySQL )

if rs("status")="NEW" then
...
else
...
end if

Substring Function
I am trying to figure out a SQL statement. I have created a table called employees with fname, lname, and email fields. I have several records in this table. All records have values in the email field, but not the fname or lname fields.

I would like to create a sql statement to parse the email field (which consists of the first and last names of the employee in this format: first.last@company.com).

I know I am way off, but this is what I have so far:
UPDATE `employees` SET `fname`='what goes here?'
UPDATE `employees` SET `lname`='what goes here?'

Being new to SQL, what function do I use to search for a particular substring of the email field, such as 'first' for the fname, and 'last' for the lname? I am aware of the left() function and mid() function, but the strings vary in length.

Replace Function
I am not an experienced user of MySQL and we are trying to produce a basic report but we are having trouble getting the replace function to work. We have a unique indentifer (contract id) from a finance package but need to delete the suffix "CS" from the contract id : we have used the following code:

REPLACE(ContractId, 'CS', ' ')

However, when we run our Crystal report the contractid is limited to a string of 6 yet we need to ensure that at least 10 char are returned.

Count Function
I have a table with 40 rows. After I connect to the server and select a database I try to store the number of rows in a certain variable using php.

I'm using....

$count = mysql_query("SELECT count(*) FROM League1);
echo $count;

...when I do this it displays "resourceID#2resourceID#4"

For some reason this made me think I was getting an array instead of a straight up number so I added this line before echo $count;

$count = count($count);

....and that just displayed "11" no matter how many rows there were in the table.

After all of this I am getting the feeling that I am doing something totally wrong but everywhere I look to find out what I did wrong I get either an answer that is specific to another problem or something way too general.

Date Function
How does DATEADD(d,-1,DATEDIFF(d,0,GETDATE())) represent yesterday's date...

My explanation which does not fit here is that datediff will do today-0 and will return 8 as today's date is 8th. Then for DateAdd don't we need a date to do the calculation...how does it do 8-1=7 which is yesterday's date?

YEARWEEK Function
I have just discovered the YEARWEEK date function and very useful it is too! However, having changed a date into a YEARWEEK I now need to convert it back again - I want the date of the first day in that week. Is there an easy way to do this? I'm thinking something like:

my $year_week = 'select YEARWEEK($date)';

my $first_day_of_week = 'select FROM_YEARWEEK($year_week)';