MYSQL :: Retrive Result Of Count(*)

No Result For Zero COUNT
The following query

SELECT COUNT(Id) FROM References
WHERE refereeId='3'
GROUP BY targetId;

returns the desired result if there are several rows that contain the
specified refereeId, which is great.

But if there are no matching rows, nothing is returned, and I was
expecting a return value of zero.

Am I using COUNT wrong?

Count The Result Of Group_concat?
I learned group_concat from this forum, very useful command, but I am wondering if I can * COUNT the result of group_concat *

for example, the following example, I know this is a wrong clause, but I hope I can COUNT and then use the result to do some HAVING works. So is it possible to count the result of group_concat?

SELECT class, sex, COUNT(group_concat(name)) as num from school group by class, sex HAVING num > 20

Result Of COUNT In Conditional
How can I conditionally test for the number of rows returned from a query for, say, use in a stored procedureâ€™s conditional expression?

For example, I want an INSERT to occur when

IF (SELECT COUNT(*) FROM myTable WHERE id=5) = 1

But Iâ€™ve been getting errors, and Iâ€™m guessing it has to do with the syntax of this first part of the conditional expression - how can I test the value returned by COUNT to conditionally execute some other statement?

Count A GROUP BY Result
I'm trying to count the result of a GROUP BY query without using the php mysql_num_rows() function. Is this even possible?

Wrong COUNT() Result With Joins?
I'm using this query:

SELECT DISTINCT COUNT(Programme.ProgrammeID) AS Count
FROM Programme
INNER JOIN ProgrammeCategoryLink ON Programme.ProgrammeID = ProgrammeCategoryLink.ProgrammeID
INNER JOIN ProgrammeCategory ON ProgrammeCategoryLink.ProgrammeCategoryID = ProgrammeCategory.ProgrammeCategoryID
WHERE Programme.Enabled = Ƈ'
Which I was expecting to return the total number of records (11) that had Enabled = 1, but it returns 21 (there aren't even that many records).

I've messed around with GROUPING etc but I just can't figure it out. (By the way, the joins need to be there even though im not using them in this instance, as sometimes filtering is on ProgrammeCategory.ProgrammeCategoryID too).

Non-Numeric Result From SELECT COUNT(*)
I'm using MySQL 4.1.11 and MyODBC 3.51.11.
I've a problem with SELECT COUNT(*) query.

I'm using mysql in ASP. I'm executing this query for example:

Select Count(*) as TotalMembers From Members; //with recordset("Totalmembers")
-- or --
Select Count(*) From Members; // with recordset(0)

but both of these queries aren't giving Numeric (Integer) results...
I'm cotrolling them with IsNumeric function by ASP. But it gives False result.

Also i cannot using mathematical operators such like +-*/ . Because result isn't numeric. And an error occurs.

If you know asp, could you try to use math operators with select count(*) result?

Trying To Count The Number Of Rows In A Result Set After Query
The user fills out this form to sign up to the website, the form checks the database to see if the username has already been taken with the code:

$conn = mysql_connect("localhost:3306", "root", "********")
                                    or die ("Error With Connection");
        echo("connected<br><br>");
        $db_sel = mysql_select_db("game",$conn)
                                    or die ("Error With Database");
        $check = "select * from users where 'username' = '$username'";
        $db_sel = mysql_query($check,$conn)
                or die (mysql_error());

Distinct List Of Parents With A Child Count Result
Parent (id, name)
Child (id, parent_id, session_name)

I'm trying to write a query that will have one output row per Parent. Each row will show:
parent.id, parent.name, count of children for that parent AS children_count

Some parents have no children. Those rows could return null or 0 for the children_count field.

I know multiple methods external to SQL to solve the overall problem such as returning the join and counting where child.ids (for the same parent) is not null.

==>> but is there a way to do it in one SQL query that returns just the info I need?

Retrive Key
What is the easiest way to retrieve the primary key for a record that has just been inserted into a table. The key field auto increments so is not part of the insert query.

Retrive Available Databases
i'm using mysql and java, and would like to retrive all available mysql databases.

scenario: i should be able to choose from a dropdownlist the desired database to connect to.

currently i have hardcoded the database name, and if i want to switch to another database, i have to close the application, to change the string value, compile it and start the application again. that's not intelligent.

Retrive A Limit Number Of Rows
How can I make the following query :
I would like to retreive only the number of rows while sum(field1) < 20. Is this possible?
If my table have the following values :

1
4
6
8
5

It only retrieves the first 4 rows. sum(field1)=19

Retrive Rows Affected Number
I'm trying to migrate some MS Sql Stored Procedures in MySql. Here is the MSSQL stored procedure.

CREATE PROCEDURE CB_UserLogin
(
    @User      nvarchar(50),
    @Pass   nvarchar(50),
    @ID_Util int OUTPUT
)
AS

SELECT
    @ID_Util = fID_Util

FROM
    tblUtiliz

WHERE
    fUtilizator = @User
  AND
    fParola = @Pass

IF @@Rowcount < 1
SELECT
    @ID_Util = 0

Query To Retrive File Names
Lets consider:

table1

col1
"sometext /a.jpg sometext /b.jpg sometext /c.jpg sometext..."
"sometextt2 /d.jpg sometextt /e.jpg sometextt /f.jpg sometextt..."
etc...

This query:
SELECT SUBSTRING_INDEX(SUBSTRING_INDEX(col1,'.jpg', 1),'/', -1) from table1;

returns only file names:
a
d

but b(.jpg) , c(.jpg), e(.jpg) and f(.jpg) are not returned!

My desired result should look like this:

a
b
c
d
e
f

any suggestions about how to get all the other file names ?

Maximum Number Of Rows Mysql Can Retrive
Basically I want to know the max rows mysql returns for a select. Heard that MSsql would retrive about 100 rows.

How Can I Determine The Offset Of A Result In An Ordered Result Set?
How can I determine the offset of a result in an ordered result set?

I would like to pass the calculated offset into the limit half of and ordered select statement.

E.g. I have a table that records a id and datetime for captioned photographs. I'd like to show the five photos that were taken after the photo with id=23.

To do that I need to find the offset of photo with id=23 in

select id, datetime, caption from photos order by datetime;

Then I could get the result I want by doing....

select id, datetime, caption from photos order by datetime limit $offset, 5;

I've spent several hours scouring around and found some people with similar problems, but no solutions yet.

Retrive Category Names Where Categoryid Is Different From User To User
I am trying to retrive category names where categoryid is different from user to user

I know LIKE works with one int(1), but I want it to work with more ints (1,3,5)
SELECT * FROM `categories` WHERE categoryid LIKE (1) Working

SELECT * FROM `categories` WHERE categoryid LIKE ( 1, 5 ) Not working

#1136 - Column Count Doesn't Match Value Count At Row 1
I'm getting the above error with the following SQL Statement. I cannot seem to find the error in the code. The select statement does pull multiple rows.

I'm using my SQL version: 4.1.19

Any clue on why this isn't working?

INSERT INTO `Grants` ( `Project_Code` , `Grant_Code` , `Fiscal_Year` , `Capital` )
VALUES (
(
SELECT Project_Code, Grant_Code, FY, SUM( Capital )
FROM Grants_Temp
WHERE Project_Code = 'OSUT'
AND FY = '2006'
AND Claim_Month = '072006'
GROUP BY Grant_Code
ORDER BY Grant_Code
)
)

Column Count Doesn't Match Value Count At Row 1
I am getting the following error when I run my query.
Column count doesn't match value count at row 1

I have looked up this error and have checked and I appear to have the right number and names in my query. In the DB table I have 34 columns, and that is what I have in the query.

The last 4 in the query are for the names of the images being uploaded, but am not sure how this all works, so I don't know if I need them, but have them there until I know for sure. Comment, Purchase and Remarks are not used in this form, but I have added them so everything is being shown in the query. Code:

Count(*) As Count And TotalCount Of Count
data in myTable1

(n) country_id
(1) 3
(2) 1
(41) 1
(5) 2
(6) 3
(7) 4

data in myTable4

(time) param
(10 : 10) c=4
(10 : 12) c=2
(10 : 30) n=41&k=5
(10 : 35) c=1
(10 : 37) n=5
(10 : 50) c=2
(10 : 54) c=2
(10 : 55) n=1&cate=6
(11 : 12) c=2
(11 : 15) n=7
(11 : 20) c=1
I have data in myTables like the above.

I have the following code.

code

(select left(time,2) as hour, count(*) as count
from myTable4
where

left(param,1)='c'
and
substring(param,3,1)=2

group by left(time,2)
)
UNION all
(select left(time,2) as hour, count(*) as count
from myTable4,myTable1

where
left(param,1)='n'
and
substring(substring_index(param, '&', 1) ,3)=myTable1.n
and
myTable1.country_id=2
group by left(time,2)
)

order by hour
And the code above produces the following result.

result

(day) count
(10) 3
(10) 1
(11) 1
The following would-be code doesn't work correctly, but it will show what I want.

would-be code

(select left(time,2) as hour, count(*) as count,
sum(count) as totalCount
from myTable4
where

left(param,1)='c'
and
substring(param,3,1)=2

group by left(time,2)
)
UNION all
(select left(time,2) as hour, count(*) as count,
sum(count) as totalCount
from myTable4,myTable1

where
left(param,1)='n'
and
substring(substring_index(param, '&', 1) ,3)=myTable1.n
and
myTable1.country_id=2
group by left(time,2)
)

order by hour
And the following is my target result.

target result

(day) count totalCount
(10) 3 5
(10) 1 5
(11) 1 5

Difference Between Count(*) And Count(1)
What is the difference between count(*) and count(1)?

Difference Of Count(*) From Count(1)
Is it true that count(1) is more efficient than count(*)? They say that count(*) still goes through all the records without needing to.

How To Fix "Column Count Doesn't Match Value Count At Row 1" ?
I've been trying to install a portal to my installation of Invision Power Board, and I keep coming up with this problem. I post here for two reasons: firstly is that no one is responding over at the portal creator's thread and I need help, second is that this error looks like a mySQL error that could be solved without the need of the creator if possible.

Here is the error returned:

mySQL query error: INSERT INTO `ibf_portal_box` VALUES (1, 'lang.last_topics', '<box><menu>10,20,30,50</menu>
<topics_show>10</topics_show>
<order>last_post</order>
<exforums></exforums>
</box>', 0, 'middle', '*', 0, 4, 'last_topics', '1')

mySQL error: Column count doesn't match value count at row 1
mySQL error code:
Date: Tuesday 21st of December 2004 08:43:10 PM

I am very new to mySQL and don't really understand it. What is wrong with the above that it is trying to insert, and how is it fixed?

Getting The Last Result
I have following table:
product| ordered_by | date
n1 | A | 2006-01-01
n1 | A | 2006-02-01
n1 | D | 2006-03-01
n1 | B | 2006-05-01
n2 | B | 2006-01-01
n2 | C | 2006-04-01
....

As a result I only want one set per product with the latest "ordered_by".
In this example:
n1, B and
n2, C

So far I solved it within the executing program but I was wondering if there
is an efficient query to do the same.

Result Set
I have a SELECT that returns a set of data

Code:

SELECT stats_d.link_id
FROM stats_d
LEFT JOIN links ON stats_d.link_id = links.id
WHERE links.id IS NULL AND stats_d.link_id IS NOT NULL

Now, i want to update stats_d.link_id (same value for all) in the result set.

Result Set Of Ids
I'm selecting data where the id is in a list (ie. SELECT * FROM x_table WHERE id IN (3,4,7,8,9)).
Is there a way to maintain the order of the result set based on the order of the IN list?
For example, if I constructed my IN list to be (3,2,7,6,4), my result set will be returned in that order instead of (2,3,4,6,7).

First Query Result Used For Second?
Is this possible / Practical?

Function1
I have a form that takes a users single field input and queries the database returning two values as result of what was entered, valueA and valueB. It then calls function2 passing it valueA and valueB.

Function2
takes valueA & valueB and queries the database again using these values within the query.

Im still learning mysql so the code is a real mess and not working.

Could someone give a simplified example of how this could / should be done?

Invert Result Set
SELECT `table1_id` FROM `table1` INNER JOIN `table2` ON `table1_id` = `table2_id` GROUP BY `table1_id`
This will return a unique list of table1_id's where there is relational data from table2.

What I want to do is invert this entire result set aka get a list of table1_id's that have NO current relation to table2.

I've done this years ago in mysql 3.23 but i'm currently having a metal blank...

Result From Insert
I want to insert a record and read the index value created in a single query.

It is not sufficient to insert a record with one query then read the last record with another query as a different user running the same application has a chance of inserting another record before the 2nd query (to find info on the latest record) has a chance to run.

Location Of A Row In Result
here's the problem let's say that I have the following table (msgs):

id, cid, text
1, 1, text1
2, 1, text2
3, 2, text3
4, 1, text4
5, 2, text5
6, 2, text6
7, 1, text7

now if i executed the following query:

SELECT id, text FROM msgs WHERE cid='1';

here's what I'll get

id, text
1, text1
2, text2
4, text4
7, text7

but here's what i want to get

counter, id, text
1, 1, text1
2, 2, text2
3, 4, text4
4, 7, text7

and then I want to know the location of the row that holds the id 4, which is 3 in this example.

1st: I have mysql 3.23 on my pc, and the new version of mysql is about 17-36 MB so it's hard for me to download it on a slow intenet connection, plus I don't know whats the version of mysql on my site server, so please suggest a solution that works for version 3.23.

2nd: I don't want to create temporary tables to find the results as many users at the same time could execute the same query, so the code might create thousends of tables at the same time.

3rd: I don't wanna use PHP code for this, as the result could return thousends of results, and I don't wanna go through loop for thousends of records.

please any ideas? oh btw I want to display only 5 records but I want to know what 5 records to display depending on the location the certain row that i'm looking for.

Get The Row Number From A Result Set
How can I know the row number of a result?

For example i have a query like this:
"SELECT id FROM table WHERE id = 3"

So is there a way to get the row number where id = 3? I tried using 'mysql_fetch_row()' and 'mysql_affected_rows()' but just cant get what i want.

Large Result Set
I have a question regarding working w/ an extremely large result set - or maybe better yet how I could possibly avoid it. I have a table w/ several million records and I need to loop thru and check each record against an entry in another table and if a match is found write most of the current row's fields out to a file. My problem is when I query for the first set the result set is too large and I blow my memory.

Empty Result Set
I'm running a perl script that accesses a mysql database. I'm trying to run a simple select statement that gives me an empty result set. The wierd thing is that if I simply replace the table name with another table name - the statement returns stuff. Could the one table have some sort of issue with it?

Display More Than One Result From DB
why this:

mysql_select_db($database_MARTIN, $MARTIN);
$query_CallsAssignedCount = "SELECT StaffID, count(CallID) FROM callinfo WHERE callinfo.StaffID = '$row_Leader1[StaffID]' GROUP BY StaffID ORDER BY CallID ASC";
$CallsAssignedCount = mysql_query($query_CallsAssignedCount, $MARTIN) or die(mysql_error());
$row_CallsAssignedCount = mysql_fetch_assoc($CallsAssignedCount);
$totalRows_CallsAssignedCount = mysql_num_rows($CallsAssignedCount);

only displays one result and not all StaffIDs? Its meant to list all StaffIDs and the number of calls closed by that staff member. '$row_Leader1[StaffID]' is the coloumn that lists all the client IDs on another form. This lists all StaffIDs fine, however, this SQL command (above)only displays ONE StaffIDs result.

Sql Alternate Result Set
how to do a sql select that will alternate a result set.
I have a table called account and in account I have two different seller types 'I' and 'D'. After I run a sql query I want an 'I' record to show up and then a 'D' record and then 'I', etc....

Result From Two Tables
When I do a

SELECT * FROM table1, table2 WHERE table1.id = table2.id AND table1.id = 'value' AND table2.id = 'value'

I only get results back from one table.

Join Result Set
select table1.*, table2.* from table1 left join table2 on table1.field1=table2.field1
In php i receve a result: Array ( [field1] => 1 [field2] => something else )
I want to receive result: Array ( [table1.field1] => 1 [table1.field2] => something [table2.field1] => 1 [table2.field2] => something else )
What i need to do to get the result set i want?

Trimming Result
how may i trim the string retutned by quey?
for instance, i'd like to have three first words of a sentance.

Return Result Set In SPs
how can we have a select satement in an SP?(i want to return a result set from the SP). i want to migrate from SQL Server to MySQL and i don't know what to do with these SPs.
it can be done in MySQL client, but it gives the error:"procedure foo can't return a result set in the given context MySQL"
in the application.
can i set a cursor out put parameter and return it?(just like Oracle) or it has another solution?

and another question: is MyODBC 3.51 tested with MySQL 5.x? can we call an SP from Delphi via MyODBC? (i tried to do so (using ADO an a data provider for OLEDB) but i think somewhere in passing the call statement it had put {} around "call sp()" statement so that mysql returned an error about the syntax.)

Ordering Of The Result
I have a table which stores information on people
One of the fields that I store for each person is his nickname which is varchar(255)
I notice that I have many records in the database where the nickname has a value that starts with '!'I would like to be able to sort the data in such way that entries that start with '!' will be displayed last and all the other entries will be displayed in their correct alphabetical order.Is that possible?

Oppress A Result
i want to select information from three tables by using some COUNT() functions. The problems is that if some of COUNT return 0 the whole query goes down. Is there a way to oppress that mistake and gave a default value for the returning value.

Here is the query;
SELECT t1.c1, COUNT(t1.c1) AS var1,t2.c1,t2.c2,t2.c3,t2.c4,t2.c5,t2.c6,t3.c1 FROM t1,t2,t3 WHERE t2.c2 = PHP_VAL AND t1.c2= SAME_PHP_VAL AND t1.c5 < UNIX_TIMESTAMP() GROUP BY t1.c1;

If count of t1.c1 is 0 the whole query goes down or return the information x3. Maybe the query is imposible or my tables design is not the best. If think that if I can put a default value for a zero or 0 COUNT the problem will be fixed. Later I can easy replace it with PHP.

Result Time
is there a function in either php or sql that tells you how long a query took to process? i'm trying to find the best sql statment, and i need benchmarks.

Refine Result
is it proper way of refining results by first letter:
Code:

SELECT * FROM homes WHERE name LIKE 'a%';

Return Result Set
I was looking into returning a result set from a MYSQL 5.0 stored
procedure to php. Unfortunately I do not know what type to return nor
can I find any types that would allow me to do this. Is this possible
under the 5.0 implementation?

Return Result Set In SPs
how can we have a select satement in an SP?(i want to return a result
set from the SP). i want to migrate from SQL Server to MySQL and i
don’t know what to do with these SPs.
it can be done in MySQL client, but it gives the error:"procedure foo
can’t return a result set in the given context MySQL"
in the application.
can i set a cursor out put parameter and return it?(just like Oracle)
or it has another solution?
and another question: is MyODBC 3.51 tested with MySQL 5.x? can we
call an SP from Delphi via MyODBC? (i tried to do so (using ADO an a
data provider for OLEDB) but i think somewhere in passing the call
statement it had put {} around "call sp()" statement so that mysql
returned an error about the syntax.)

Get Result Using Join
i am retreiving from the same table with different condition

1.SELECT a.Avg_Binaryvalue as Avg1,a.Min_Binaryvalue as Min1 from MeasurementData a where Attribute_Flag ='5'

2.SELECT b.Avg_Binaryvalue as Avg2,b.Min_Binaryvalue as Min2 from MeasurementData b where Attribute_Flag ='6'

this two query gives resulsets
i need to join this two resultsets.give me sample query to join this two result sets

Order Of Result
I have an sql query which ends with "... AND id IN(" and then a list of id's in a specific order. When I run the query it doesnt return the results in the order that the id was specified. Is this normal or is there a way to ensure that the results will be returned in the order given in the "in" part of the sql statement?

Sorted Result
this my query:
$sql = "SELECT * FROM aims_technicallogs WHERE aircraftid = $dv_acftid ORDER BY tcl_flyingdate, tcl_datetime DESC";

i try execute, it run without error.

but problem was the results not sorted. what the problem is?

tcl_flyingdate = date format
tcl_datetime = date and time format

i m using mysql database version 4

Retrive Result Of Count(*)

I am using Count(*) in my Select Code: String sqlStr = "Select count(*) from Bulletin where StartDate<=getDate() and getDate()<=EndDate"; ResultSet resultSet = executeSQL(sqlStr); How do I get the the result of this select statement?

I am using Count() in my Select
Code:

String sqlStr = "Select count() from Bulletin where StartDate<=getDate() and getDate()<=EndDate";

ResultSet resultSet = executeSQL(sqlStr);

How do I get the the result of this select statement?