Create Function
How can I create a function in mysql command prompt because when i try it throw a lot of errors but in mysql administrator they create find and they work find.
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How To Create A Function?
i'd like to create a function but i have a problem: This is the script: use DB delimiter $ create function date_flow(isaero char(1), maturity date, freq int(1)) returns varchar(50) begin if freq='1' then select datediff(curdate(),adddadte(prev_date,interval 1 year)) as b; return b; end if end $ delimiter ; when launching there is an error: ERROR 1415 (0A000) at line 3: Not allowed to return a result set from a function i know the problem is the select line but how to solve it?
CREATE FUNCTION
Sorry for this n00b question but I can't find any material on this matter As far as I can see I can create my own functions with the Command CREATE FUNCTION I can see great use of this but to my best knowledge I can't just use this in query. I have to create a script yes? If I create a function how do I call it in this script?
Create Aggregate Function
i want to create my own aggregate function........ when i run the following code : [code]DELIMITER $$ DROP FUNCTION IF EXISTS `tradedb`.`abc` $$ CREATE AGGREGATE FUNCTION `tradedb`.`abc` () RETURNS DECIMAL BEGIN END $$ DELIMITER ; [code] i get the following error in the mysql query browser. Script line: 4AGGREGATE is not supported for stored functions
Replication And Create Function
I'm running 5.0.4-beta with replication, and it works OK. Except... When I use "create function" in the master, it does not get propagated to the slave. Is this reasonable behavior? I don't think so. I'm supposing it is a bug.
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 £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. =....
How To Create Different Namespaces When Using CREATE VIEW?
I'm doing a triple join between tables which have similarly named fields...I was hoping that when using CREATE VIEW, the result would be a table with fields such as a.field, b.field, c.field...but I get an error "Duplicate column name 'field'" ...How can I get around this besides changing the name of the duplicate field in each table?
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.
Using Unix_timestamp Function
Can anyone see anything wrong with the way I am using the MySQL unix_timestamp function in this snippet from a query? $importdata="INSERT INTO import (date, gluc, humilog, regular, lantus, carbs) VALUES (unix_timestamp('2004-08-01 05:04:00'),152,02.0,00.0,00.0,00.0) The table column where I am inserting this was created as: "date timestamp not null" I am getting an incorrect timestamp value (20001228122240)that converts to "Mon, 18 Jan 2038 20:14:07 -0700" in PHP. As far as I can see, my usage of unix_timestamp is the same as that in the MySQL manual.
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)';
Using Distinct In Sum Function
i keep getting 1064 : SELECT userID, COUNT ( DISTINCT failreasonid ) FROM MyTable WHERE number like '923%' and date between 2005-08-10 and 2005-08-21 GROUP BY userID
Calling Db Function
how do i call a db function from with in a db function which returns a result. can some one pls help me with the syntax, when i call a function from with in a function it says funtion does not allow to return a result set where as it returns only one values.
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