MYSQL :: Query Help, Comparing Rows

Comparing Two Tables And Delete Rows
I have two tables pluserdata and pluserlids. pluserdata contains all the users information such as ID username password email etc, and pluserlids contains just corresonding IDs (from pluserdata) and then leagueid which correspods to another table.

What I am after is a query to look at pluserlids and then delete any rows that do not have a corresonding id in pluserdata.

Another way of explaining it is that I have deleted about 1000 users (spam) from pluserdata but their ids are still in the pluserlids table so I want to check to see if they have been deleted then to remove their lid from pluserlids.

Comparing Dates Y, M, D , Time In Sql Query
ok.. ive finally got my nice little calender setup to output my dates

now

how do i query my database

for example ive got 2 variables
$startdate = 2006-1-1 00:00:01
$enddate = 2006-1-1 23:59:59

these represent the 1st and last second of the first of january 2006

i have a cell in my table (table called challenges) ( cell called time) that contains a date in the same format for each entry

how do i get all the entries between the start time and the end time..

can i use less than < and more than > as these are not really integar values

the column type is datetime but there is also another column of type datetime

SUM Query And Comparing Values In WHERE Clause...
Here is my query:

Zero Rows Or One Rows Returned, Same Data And Same Query
I have a query that produces a single row (as I expect) when I run it from the mysql client (mysql 4.0.18-Max/linux, also 5.0.19-standard/OSX-intel), or from sqlgrinder (osx, uses jdbc).

When I run it inside my application (a Java app connecting via jdbc), I get zero rows from this query.

I tried it under phpmyadmin, and once again I get zero rows.

Why do I get inconsistent results? Here's the query:

Several Rows From One Query
I've this sql-query...

$sql = "INSERT INTO database (some_kind_of_id, names) VALUES $xxx, $_POST['xxx2']";

The thing is that my post xxx2 are several values that I want inserted on several rows with the values xxx in front...

Last N Rows Of The Query
SELECT expensive query ORDER BY field ASC;
It generates somewhere around 2.9m rows. I want the last 10:

SELECT expensive query ORDER BY field DESC LIMIT 10

But I want them the other way around. Sure, I can do that programatically, but for "application reasons" I want that done in the query, so what I want to do is along the grounds of

SELECT expensive query ORDER BY field LIMIT 10 OFFSET rows()-10
We're using MySQL 4.0. Is there a way to achieve the above without using a temporary table?

SQL Query Not Outputing All Rows.
My query doesn't seem to output all 6 rows in the database only two queries and i'm unsure why. I do know it is the query as when i do
SELECT * FROM case_studies
It outputs all rows.
The query i am usign is:
select programs.program_title,
programs.id, case_studies.id,
case_studies.title, case_studies.author,
case_studies.timestamp from case_studies,
programs WHERE programs.id
= case_studies.id
Any ideas?

How Many Rows Were Affected By Query?
How do I retrieve the number of affected rows by an UPDATE query with SQL? The C API exposes mysql_affected_rows() but I can't find documentation of the SQL equivalent...

I'm trying to find if an UPDATE had an effect within a stored procedure, so I can do an INSERT if there's no row to update.

Doing it the other direction to generate an error to act on would be quite wasteful... one INSERT and millions of errors per day.

Eliminate Rows In A Query (without Many OR)
This is my query :

SELECT cas.id,cas.noCas,cas.nomFictif,cas.prenom,cas.naissance FROM cas WHERE LEFT(noCas, 3)<'300' AND cas.id<>53 AND cas.id<>61 AND cas.id<>173 AND cas.id<>174 AND cas.id<>178 AND cas.id<>185 AND cas.id<>598 ORDER BY noCas

There must be a more efficeint way to find what i want than this :

AND cas.id<>53 AND cas.id<>61 AND cas.id<>173 AND cas.id<>174 AND cas.id<>178 AND cas.id<>185 AND cas.id<>598

Something like cas.id is not (list of values)...

Query With 3.3million Rows Is Slow?
I'm not that great with MySQL...so I was hoping someone could help me out.
The query I'm running is too slow...can anyone tell me what I can do to
speed it up..if I can at all? I was wondering if because ZipListMatrix has
3.3 million rows that 8 seconds is all the faster it's going to be. Any
help is greatly appreciated! I have already "optimized" the tables.

Updating Multiple Rows In One Query
tried to find the answer with search but didn't return any answers.

OK, here is the table

table test
------------------------
| test_id | test_order |
------------------------
| 1 | 1 |
------------------------
| 2 | 2 |
------------------------
| 3 | 3 |
------------------------
I'm trying to change the orders in one query, but not sure how to do that.

phpMyAdmin shows me the code like this

Quote:

$sql =
'UPDATE `test` SET `test_order` = ƈ' WHERE `test_id` = 1;'
'UPDATE `test` SET `test_order` = Ɖ' WHERE `test_id` = 2;'
'UPDATE `test` SET `test_order` = Ƈ' WHERE `test_id` = 3;'
. ' '

I'v tried that but got a syntax error.

MySQL version is 4.0.26, can anyone help please?

How To Update Multiple Rows With One Query?
I am using PHP/MySQL and need to update 7 rows with one query. Can someone tell me how to do the following so it will update the row for each day of the week? (This obviously doesn't work)

$sql = "UPDATE business_hours SET hours='$sunday' WHERE id='$id' AND day='sunday' AND SET hours='$monday' WHERE id='$id' AND day='monday'";

Query Pulls Out Multiple Rows Even Though Theres Only One
Ive got a query thats selecting info about a product from a table called items and joining on a table called itemimages to get its associated images. The product can have more than one image. If i run the query on an item with 2 images i get 2 results for one item.....when theres only one item.....it seems to duplicate the item for each of its images....

SQL
SELECT items.*, itemimages.* FROM items INNER JOIN itemimages ON (items.itemID = itemimages.itemID) WHERE categoryID = '$category' AND active = 'yes' LIMIT $start, $limit"

Retrieve Everything AND Count Rows In One Query
set rsminmax = con.execute("SELECT * FROM `minirules_minmax` where RuleId = '" & contractId & "'")
set rsminmax2 = con.execute("SELECT COUNT(*) FROM `minirules_minmax` where RuleId = '" & contractId & "'")

Is there any way to do this in one SQL query?

How Do I Update Multiple Rows In One Query?
How do I update multiple rows in 1 query? I try not to do a loop of update queries.

Average Query With 2 Rows From Same Table
My table:
"answer"
answerID
answer(int)
questionID(int)
userID(int)

answer1 is questionID = 1
answer2 is questionID = 2
WHERE userID is the same for both answer1 and answer2

I want the average of answer1/answer2: AVG(ans1/ans2), but how?

Updating Multiple Rows With Same Fields (in One Query?)
I have 2 tables here

table categories

+--------------------------------------- +
| cat_id | cat_name | cat_total_articles |
+----------------------------------------+
| 1 | PHP | 23 |
+----------------------------------------+
| 2 | MySQL | 17 |
+----------------------------------------+
table articles

+---------------------------- +
| article_id | article_cat_id |
+-----------------------------+
| 1 | 1 |
+-----------------------------+
| 2 | 2 |
+-----------------------------+
Now I've changed an article's category from cat1 to cat2, and I need to update cat_total_articles of both cat1 (minus 1) and cat2 (plus 1) in category table.

Is it possible to combine the following queries into one statement?

PHP

mysql_query("UPDATE categories
SET cat_total_articles = cat_total_articles + 1
WHERE cat_id = 2");

PHP

mysql_query("UPDATE categories
SET cat_total_articles = cat_total_articles - 1
WHERE cat_id = 1");

Help With Updating Duplicate Rows In Mysql Query.
Quote:

SELECT id, count(*) AS numlist FROM products GROUP BY category, name, brands HAVING numlist > 1 ORDER BY id ASC

What it does is find the duplicates. I also have a column called "app" which has a default set to "1". So now what I want to do is that when duplicates are found, I want the first duplicate row in each group to stay as a "1" and the others in the same group to be updated to a "2". I need this done for every group.

How can I do this. I have looked high and low accrossed the web, but can't seem to find any solution.

I have managed to find out how to group them and count the number of listings in each group, but I can't seem to figure out how to do the rest.

Also, if possible, I would like it to be done with one query.

Query To Display The Rows As Colums Is Not Working!!
I want a select query to get two columns. but i need to get these columns one below the other that is consider that i have a table student in that i have 2 columns name mark.
Now i want the result as

Name Raj Rina Tina
Marks 80 90 70

I tried the --vertical option of mysql and G option in the query.

for example when i tried

select *from studentsG

it displayed

*********** 1. row ***********
name: Raj
marks : 80
********** 2. row ************
name: Rina
marks : 90
********** 3. row ************
name: Tina
marks : 70

but i want to display

Name Raj Rina Tina
Marks 80 90 70

Query Which Gets Rows Based On A Radius, Lon And Lat Doesn't Work?
I have found this query which gets rows based on a radius. I need this for zip codes based on lon and lat's.

$sql2 = "SELECT * FROM table as z WHERE (SQRT( (69.1 * (".$userLat." - z.lat)) * (69.1 * (".$userLat." - z.lat)) + (53.0 *(".$userLong." - z.lon)) * (53.0 *(".$userLong." - z.lon))) <= ".$userRadius." )";
return $sql2;
$res = mysql_query($sql2, $connDB) or die(mysql_error());
$row = mysql_fetch_assoc($res);
based on a test zip code gives a result like

SELECT * FROM table as z WHERE (SQRT( (69.1 * (52.399834 - z.lat)) * (69.1 * (52.399834 - z.lat)) + (53.0 *(4.840762 - z.lon)) * (53.0 *(4.840762 - z.lon))) <= 100 )
the lat and lon of the test zip code are right. As you can see z.lat and z.lon don't get any value. And these would be every lat and lon in table.

In my db table lon and lat are decimal(10,6) type with a default value of 0.000000

Use Where In Query So It Returns Rows That Has Less Than 10 Characters In The Word
I want to return rows that has less than 10 characters in the word that is used in the where clause sort of thing.

I can't really explain so I will give you an example, which is obviously wrong.

Quote:

mysql_query("select games from gaming where gamename < 10 characters");

Why Does The Slow Query Log Show More Rows Than Exist?
# Time: 070528 17:14:57
# User@Host: counter[counter] @ localhost []
# Query_time: 3 Lock_time: 0 Rows_sent: 7 Rows_examined: 120647
SELECT SQL_CACHE `webpageUrl`, `webpageName`, COUNT(*) AS `count`, (COUNT(*) / (SELECT COUNT(*) FROM _1_log)) AS `pct` FROM _1_log GROUP BY `webpageUrl` ORDER BY `count` DESC LIMIT 7;

mysql> select count(*) from _1_log;
+----------+
| count(*) |
+----------+
| 111824 |
+----------+
1 row in set (0.00 sec)

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());

Creating Non-existent Rows In Query With Join
I want to make report using PivotTable/CrossTab and I used an application to create it.
The problem is, I want to so show NULL value to the temp table that will be the source of my report.

I'm using this query:

What Query To Check If Any Rows Exist Satisfying WHERE Clause?
I'm looking for a query that will check if any rows exists in a table according to a WHERE condition. I know I can use COUNT(*) but then mysql will do unnecessary task of counting all the rows whereas I just need true or false. So far I did this:

SELECT COUNT(*) AS exists FROM mytable WHERE ...
Sometimes I just select the first row and check later in php how many rows have been returned:

SELECT some_col FROM mytable WHERE ... LIMIT 1
But I cannot do this check (or can I?) in sql alone and I have problems when I want to use this in a subquery, for example:

SELECT id,
name,
(SELECT COUNT(*) FROM mytable WHERE ...) AS exists
FROM othertable
WHERE surname='xxx'
Can I do the same without using COUNT(*)? I would like a query that returns 0 or NULL if no rows were found, or 1 (or some other value) if 1 or more rows were found.

Count One Table's Rows From Multi Table Query
here are my tables (condensed)

FEEDS
feed_id
site_id

SITE
site_id
site_name

ARTICLES
article_id
feed_id
link

I want to create a query that returns the total number of articles for every site_id (which is unique in the SITE table). I have this:

PHP

$gsite = mysql_query("SELECT site.site_id, feeds.feed_id, COUNT(articles.article_id) AS acont FROM site,feeds,articles
WHERE feeds.site_id = site.site_id AND articles.feed_id = feeds.feed_id group by site.site_id", $connection)
or die(mysql_error());

The query does not use JOIN, ON and all that good stuff.

I just need the following variables to run through a loop:

site_id
the number of articles rows per site_id

Comparing Age
So the birthdays in my MySQL table are in a column called DOB and in the format of say: March 8 1985.
Now i have my own PHP function that will convert that to a nice numerical value of age relative to today, which is perfect. it is called getAge(). However, i can't seem to be able to parse an SQL query with that function inside...is there any way to parse my own PHP functions inside an SQL query?

Comparing
I'm currently working with two tables; A scheduling table and a document table. Basically I'm trying to make a query that says this -- "give me everything from this month and day in the Document table that's not in the Schedule"

What's Wrong With My Query To Filter Double Entries And Skip Empty Rows?
I am trying to get filter a database table.
- skip empty rows (i.e. ecardNameSender is empty)
- filter double entries

$sql = "SELECT COUNT(*) as total FROM tblEcards WHERE ecardNameSender != '' GROUP BY ecardEmailFriend";
$result = @mysql_query($sql, $connDB);
$row = mysql_fetch_assoc($result);
$totalPics = $row['total'];
echo $totalPics;
What's wrong with my query?

Comparing A Csv To A Db Table
How would I go about comparing values in a CSV file to a table in the database, and then removing any rows where that value (an email address) matches? Is this something I can do in phpMySQL or will I need to create a separate PHP script or something?

I maintain a mailing list using something called ListMessenger. It's a great web application, but the one major drawback is that it doesn't have a way to handle bounces. Over the course of 5-6 years, I'm now up to around 800-900 bounced emails every time I send out a newsletter.

I'd really like to clean up the list and I was able to extract all the bounced address from my email client. I'm just not sure how to do it. I actually have an idea of what needs to be done... it's more the actual code to make it happen that I'm not sure of.

I'm thinking it would be something like this:

1. Open csv file and read values into an array
2. Run a SQL statement that removes any rows from the "users" table if the "email_address" field matches any of the addresses in the array.

Any help would be greatly appreciated. I can get into more specifics as far as the table/column names and stuff,

Comparing Tables
I have a query that produces a list of names of people who have completed a certain course. I want to be able to run a report which can show who has not completed this course. The code I have attached below just returns the same resut as those who have sat the course.

SELECT distinct pps_principals.name as pname, pps_principals.login, pps_scos.name, pps_transcripts.score, pps_transcripts.max_score, pps_transcripts.status
FROM (dbo.PPS_SCOS JOIN dbo.PPS_TRANSCRIPTS ON dbo.PPS_SCOS.SCO_ID = dbo.PPS_TRANSCRIPTS.SCO_ID)
JOIN dbo.PPS_PRINCIPALS ON dbo.PPS_TRANSCRIPTS.PRINCIPAL_ID = dbo.PPS_PRINCIPALS.PRINCIPAL_ID
where pps_transcripts.date_created between &#55614;&#57158;-12-01' and &#55614;&#57158;-12-31'
AND PPS_TRANSCRIPTS.STATUS like '[PCF]'
and pps_scos.name = 'COURSE1'
or pps_scos.name = 'COURSE1.1'
or pps_scos.name = 'COURSE1.2'
AND PPS_TRANSCRIPTS.TICKET not like 'l-%'
and pps_principals.name not in (
SELECT distinct pps_principals.name FROM (dbo.PPS_SCOS JOIN dbo.PPS_TRANSCRIPTS ON dbo.PPS_SCOS.SCO_ID = dbo.PPS_TRANSCRIPTS.SCO_ID)
JOIN dbo.PPS_PRINCIPALS ON dbo.PPS_TRANSCRIPTS.PRINCIPAL_ID = dbo.PPS_PRINCIPALS.PRINCIPAL_ID
where pps_transcripts.date_created between &#55614;&#57158;-12-01' and &#55614;&#57158;-12-31'
AND PPS_TRANSCRIPTS.STATUS like '[PCF]'
and pps_scos.name = 'COURSE1'
or pps_scos.name = 'COURSE1.1'
or pps_scos.name = 'COURSE1.2' )
AND PPS_TRANSCRIPTS.TICKET not like 'l-%'

Comparing Dates?
i have an 8 digit date string that i want to compare to a column of type 'date' in
a MySQL db. the 8 digit string is in the format 'CCYYMMDD'. the question is: do
i need to put it into the 'CCYY-MM-DD' format in order to get correct output from
the datediff function, or can i simply leave it how it is?

Comparing Dates
I have a problem with me. I am describing the whole situation. I have a table, the structure of the table is as follows:

Table Name: Announcement
FieldName Data Type(Size)
Announcement Varchar(50)
St_Hr Decimal(10,0)
St_Min Decimal(10,0)
St_Day Decimal(10,0)
St_Mon Decimal(10,0)
St_Year Decimal(10,0)
End_Hr Decimal(10,0)
End_Min Decimal(10,0)
End_Day Decimal(10,0)
End_Mon Decimal(10,0)
End_Year Decimal(10,0)

The data stored is:
Test Announcement,10,20,6,10,2005,11,0,8,10,2005

Now, I have to write a query to retrive announcements after filtering them as per the mentioned Starting and Ending Date & Time. The condition should use the local date and time.

Comparing Versions Of Sql
I'm taking up a new position and have never used sql before although use
and code in lots of other languages. When doing a bit of survey I find
many many versions of commercial and public versions of sql. Can anyone
tell me if the syntax is generally similar or are they completely
different. If I invest time learning mysql on XP or Linux will that be
useful if I end up using something like Oracle later on? The only one I
would avoid is MS.... like things that work occasionally.

Comparing Strings
I have a lot of records in a table named in this pattern "this text is the same.r01 someText (001/100)", "this text is the same.r01 someText (002/100)", "this text is the same.r02 someText (003/100)" etc.

The idea is that i want to automate the process of recognizing the files belonging to the same file(.r02 in this case), and then set a value which shows that is belongs to a certain fileID in another table.

The problem is that i have no idea what would be the best way to do this. My initial guess is that i would have to use a trigger and a LIKE clause comparing the "this text is the same.r02" part of the string, to see if it already exists in the database. If it does, i have to mark it as belonging to the same file.

I guess using a LIKE clause would be very slow, and the amount of records will grow quite big(millions of rows).

Comparing Tables
tablename: leftfile
Fieldname: leftword
Data: bbb
ccc
xxx
zzz

Tablename: rightfile
Fieldname: rightword
Data aaa
bbb
ccc
ddd
eee

I want to know which records in table rightfile do not match records in leftfile.
My assumption was that this should be possible with:
select rightword from rightfile, leftfile where rightword not like leftword.
The opposite query, which is finding a match between records works spot on:
select rightword from rightfile,leftfile where rightword = leftword.

Two questions:
1. What would be the proper method of achieving the desired result (all records from rightfile that do not have an equal record in leftfile)

2. I must be missing something important in my thinking. Why would my method not work?

Comparing Two Fields With LIKE
Here's the sql:

SELECT *
FROM boxer.lpars a, boxer.libraries b
WHERE b.lpars LIKE '%a.lpar%'
AND a.deleted = 0
ORDER BY node, lpar

b.lpars will commonly look like: "WIN1#WIN2#WIN3#WIN4#"
a.lpar will commonly look like: "WIN1"

When I run this query I get zero matches. What do I need to do to match fields using LIKE?

Comparing Two Table
I have two tables:

CREATE TABLE `FootballerScore` (
`footballerID` mediumint(4) NOT NULL default '0',
`GameWeekID` mediumint(4) NOT NULL default '0',
`GameRuleID` mediumint(4) NOT NULL default '0',
`Goals` mediumint(4) NOT NULL default '0',
`Assists` mediumint(4) NOT NULL default '0',
`CleanSheets` mediumint(4) NOT NULL default '0',
`YellCards` mediumint(4) NOT NULL default '0',
`RedCards` mediumint(4) NOT NULL default '0',
`WeeklyScore` mediumint(4) NOT NULL default '0',
`AccScore` mediumint(6) NOT NULL default '0',
PRIMARY KEY (`footballerID`,`GameWeekID`)
) ENGINE=MyISAM DEFAULT CHARSET=latin1;

CREATE TABLE `footballers` (
`footballerID` mediumint(15) NOT NULL default '0',
`fname` varchar(15) collate latin1_general_ci NOT NULL default '',
`sname` varchar(15) collate latin1_general_ci NOT NULL default '',
`value` decimal(15,1) NOT NULL default '0.0',
`PremTeamID` mediumint(15) NOT NULL default '0',
`position` varchar(15) collate latin1_general_ci NOT NULL default '',
`Importance` varchar(4) collate latin1_general_ci NOT NULL default '',
PRIMARY KEY (`footballerID`)
) ENGINE=MyISAM DEFAULT CHARSET=latin1 COLLATE=latin1_general_ci;

The footballers table basically has a list of all the players in the premiership and the footballerscore table has a list of the player who played in a given week. For any one week I need to find out who DIDNT play. I can do this by comparing all the footballerIDs in both tables and the difference is the group I need. However I'm not sure how to put this into an SQL statement.

Comparing Tables
Let me set the scene for you. I have two tables on the same database:
hr_harassment (everybody who has already entered into a training class)
fields: lname, fname, class
hr_employee_list (everybody who needs to enter into a training class)
fields: Lname, Fname
I need to compare the two tables to figure out who has not yet signed up for the class. What would be the easiest way to do this? I am using PHP to program the page. I looked online and came up with this:

SELECT * FROM hr_employee_list AND NOT EXISTS (SELECT * FROM hr_harrassment AND hr_employee_list.Lname = hr_harrassment.lname AND hr_employee_list.Fname = hr_harrassment.fname)

But my browser tells me this:
Warning: mysql_fetch_array(): supplied argument is not a valid MySQL result resource in monitor.php on line 270

Comparing Two Sub_queries
I need to return the rows that are NOT duplicated. I am trying to be sure information on one db is the same on another db. I just need the odd rows returned. Is there an opposite of the union function?

EX> Query 1 returns

acct_num product_id     count
1507692    100000500    1
1846486    106            3
1846486    100000500    1

Query 2 returns the same.

I want the row returned if they aren't the same.

Data Comparing
i'm writting a program that uses my sql to compare a date time feild to a date that i have to count call on one date the statment looks like this:

SELECT Count(*) FROM wab_answers WHERE wabScreen=1 And DateDiff(answerTime,'" & curDate & "')=0;

where curDate is string containing the date that i would like to compare. I'm not to sure on the correct way to do this. Just need a push in the right direction.

Comparing 2 Tables
I have a table of users which is updated once a week by the client sending me a spreadsheet, and me uploading the CSV to my scripts which then import the data into the user table. This all works fine. However instead of sending me incremental data that can be just imported, the client has now taken to sending me a complete data list. The problem with this is that I cannot just empty the user table and re-populate with the new data as I will lose the primary key values which I use elsewhere.
My solution to this was to create a new table for importing with the same structure as my user table, import the csv to there, then somehow compare the tables and add the rows missing from the import table into the user table.

Comparing Times
I'm creating a voting system, and want to prevent people from cheating. Therefore I'm logging their IP, and the time they voted, and what I'm planning to do is have a script which will delete any records which have been in the database for say 24 hours.

To get the length of time I was gonne use:

HOUR(TIMEDIFF(NOW(),time))

Comparing Dates
I have a releaselist. All data before today should be deleted. How do I do this?

DELETE * FROM releaselijst WHERE Release < CURDATE()

doesnt work

Comparing Two Tables
I have to compare two tables. They are both of more than 650.000 rows, and I have to find which ones are missing in one of them. I have tried to first find all the rows in table A, and then search through table B to see if you can find it there. But this takes way to long time. Too bad mysql4 does not take subqueries.
Does anyone out there have a good idea to get this done?

Comparing Two Tables
I was wondering if there was a SQL command I could use that would find similar values from two specific columns in two different tables.. possibly an intersect?

heres what I mean

Table 1
blogTitle="I love soccer"

Table 2
articleTitle="Soccer is fun"

Is there a SQL command that would be able to find the similarities between each column in each different table if, lets say, the user entered "soccer" as a query?

Comparing Differences
I want to find the fields that are in table A but not in table B.
If I have:

table A: id, name, scoreA
table B: id, name, scoreB

I want to find the scores that are in table A but not in B, by example:

table a: 1,john,12|2,mike,14|3,neal,17

table b: 1,hellen,14|2,nolhan,12|3,vicky,10

After make the query:

Score in A that are not in B: 17