MYSQL :: Update Based On Other Table

UPDATE Based On Value In Another Table
How do I update a table to remove orphaned references to a second
table? I've deleted rows in the second table, which has a unique
auto_increment key. The first table now has references to keys that no
longer exist. I need to update the first table, setting the value to
NULL where the referenced key no longer exists. Something like:

UPDATE table1 SET table2ID = NULL WHERE table1.table2ID NOT FOUND IN
table2.ID;

The NOT FOUND IN isn't SQL, of course, but I'm not sure what should go
there.

UPDATE Based On Value In Another Table
How do I update a table to remove orphaned references to a second
table? I've deleted rows in the second table, which has a unique
auto_increment key.

The first table now has references to keys that no
longer exist. I need to update the first table, setting the value to
NULL where the referenced key no longer exists. Something like:

UPDATE table1 SET table2ID = NULL WHERE table1.table2ID NOT FOUND IN
table2.ID;

The NOT FOUND IN isn't SQL, of course, but I'm not sure what should go
there.

Update One Table Based On Count From Another
I heve two tables Publishers and Books.

Publishers has:
PublisherID
PublisherName
BookCount

Books has:
BookID
PublisherID
BookName.

I want a query that will update the BookCount field for every Publisher taking the number of books each one of them has in the Books table.

What would be the mySQL Update query for this?

Hope I have given enough information. I will gladly provide more.

Update Based On Row Offset From Begining Of Table?
Is there a way to update a table row based on its offset from the begining of the table. I want to be able to update based on a rows position when its brought up when all rows in a table are selected. ie; select * from table.

Update One Column Based On Another
I have two tables. One set up like this:

id item_id group_id userid outcome settled

The second is

userid yes no

I would like to look at the first table and find all rows that have a specific group_id, then update the userid yes/no based on the outcome on that row. Outcome Y then add 1 to the yes column of that userid, outcome N then add 1 to the no column of the userid. Is this possible in one SQL statement?

Updating Rows In Table B Based On Related Field In Table A
Ver 4.1.8-standard for apple-darwin7.6.0 on powerpc (Official MySQL-standard binary)

I am trying to do some data migration based. I have several tables that contain our legacy pkey field and I want to update the tables with new ID's.
I need to do this several times and have tried it several ways to no avail.

Table A
---------
companyID int(10) pKey
legacyID int(10) old legacy pkey

Table B
---------
bAID int(10) pkey
companyID int(10)
legacyID int(10)

Table A has values for both companyID (unique key) and legacyID.
Table B has values for bAID (unique key) and legacyID but companyID is empty.

I need to update tableB.companyID with tableA.companyID based on tableb.cSerialID to tablea.cSerialID relationship.

I need a query that will update ALL rows.

Updating Table Based Upon Matching Field In Second Table
I have a database of books that was originally created as a flat file.
Each record has a number of fields, including the authors name. I'm
trying to convert the database to something a little more efficient.
I've created a new table (called Authors) of unique authors names and
assigned each one a unique ID. I've added a new field in the original
table (called Books) for the author's ID. Now, I need to update the
original table with the author ID from the Author's table.

Something like this:

UPDATE Books SET AuthorID = Authors.AuthorID WHERE AuthorName =
Authors.AuthorName

This obviously doesn't work. Any assistance on how to forumulate this
query (or, if I'm headed down the wrong path, the correct way to do this
operation) greatly appreciated.

Selecting From A Table Based On Info In Another Table
Essentially this is what i want to do. I have two Tables,

Table A- has the field "id" which is the primary key
Table B- has the field "id" which is the primary key

Select * from tableA where Table A.id is not in tableB.id

How can i form a statement that will accomplish the above.

Updating A Table Based On The Value In Another Table In Ver 3.23.54-Max
I am trying to update fields in table SOLAR_SYSTEM based on the values in RESEARCH_LEVEL table

This is a SQL that I am trying to use

UPDATE SOLAR_SYSTEM JOIN RESEARCH_LEVEL ON SOLAR_SYSTEM.USER_ID=RESEARCH_LEVEL.USER_ID SET
SOLAR_SYSTEM.CASH_METAL=SOLAR_SYSTEM.CASH_METAL+1000,
SOLAR_SYSTEM.CASH_CRISTAL=SOLAR_SYSTEM.CASH_CRISTAL+1000,
SOLAR_SYSTEM.CASH_ENERGY=SOLAR_SYSTEM.CASH_ENERGY+1000
WHERE RESEARCH_LEVEL.TYPE='M' AND RESEARCH_LEVEL.LEVEL=1;

I got error

"ERROR 1064: You have an error in your SQL syntax near 'JOIN RESEARCH_LEVEL ON SO
LAR_SYSTEM.USER_ID=RESEARCH_LEVEL.USER_ID SET
SOLAR_SY' at line 1"

I don't know what is wrong. Can I do such an update in Ver 3.23.54-Max in the first place ? IF yes, then what's wrong with my statement?

Table Based On Info In Another Table
Essentially this is what i want to do. I have two Tables,

Table A- has the field "id" which is the primary key
Table B- has the field "id" which is the primary key

Select * from tableA where Table A.id is not in tableB.id

How can i form a statement that will accomplish the above.

Detecting Duplicates Based On One Field In A Table?
I can't seem to find an answer anywhere for this as most people want to delete duplicate records.

I have a table, lots of fields, one of which is "title". I want mysql to return all the rows where "title" is the same. For instance if "title" was "Lord of the Rings" on id = 1 and id = 2, then the query would return both of the records, but ignore the others. It doesn't matter what the other field values are.

I have found some
SELECT COUNT( * ) AS num_entries, title
FROM title_table
WHERE title >1
GROUP BY title

But this doesn't seem to work, although looks like it's on the right sort of lines?

I'm not a Mysql expert, so my experience is mostly limited to the usual select, insert, update and delete queries!

Table Creation Based On User Login
I'm trying to build a website that will allow the addition of users (w/ username, password, etc.).

That seems simple enough.

But is it possible to set something up (in PHP, for example) that will create a new table in the database for each new user?

Ex. John Smith signs up, is verified, and a PHP script (or Java, or whatever) creates a table specifically for him.

I know I'll need a master table of usernames, passwords, etc. These new tables would store certain user-specific data, such as preferences and other data the user might want to restrict access to.

I know I could store all of this information in a master table, but I'm trying to think ahead. Worst case scenario, if there are millions of users (unlikely, but not impossible), I'd hate to have all that data in one table, but if I have to, I can.

Counting Levels On Adjacency Based Table
Does anyone know a single query that could successfully count the number of levels in a table based on the adjacency model?

By "number of levels", I mean the number of LEFT OUTER JOIN that needs to be used in a query such like this one :

SELECT
level0.cat_ID AS level0_ID, level0.cat_parent_ID AS level0_parent_ID, level0.cat_name AS level0_name,
level1.cat_ID AS level1_ID, level1.cat_parent_ID AS level1_parent_ID, level1.cat_name AS level1_name,
level2.cat_ID AS level2_ID, level2.cat_parent_ID AS level2_parent_ID, level2.cat_name AS level2_name,
level3.cat_ID AS level3_ID, level3.cat_parent_ID AS level3_parent_ID, level3.cat_name AS level3_name
FROM ecom_categories AS level0
LEFT OUTER JOIN ecom_categories AS level1 ON level1.cat_parent_ID = level0.cat_ID
LEFT OUTER JOIN ecom_categories AS level2 ON level2.cat_parent_ID = level1.cat_ID
LEFT OUTER JOIN ecom_categories AS level3 ON level3.cat_parent_ID = level2.cat_ID
WHERE level0.cat_parent_ID IS NULL
ORDER BY level0_name, level1_name, level2_name, level3_name

List Available Items Based On Prerequisite Table
I'm trying to develop such a scheme:

TABLE Prerequisites
PrerequsiteID (FK to Upgrades table; states a prerequisite for UpgradeID in the other column)
UpgradeID (FK to Upgrades table as well)

TABLE BuildingUpgrades
BuildingID (FK to Buildings table)
UpgradeID (FK to Upgrades table; states what Upgrade Building already has)

So it's a Building -> Building_Has_Upgrades -> Upgrades -> Upgrades_Have_Prerequisites thing (Building has 1..n Upgrades, Upgrade has 1..n prerequisites). In order for Building B to have an Upgrade U, that Building B has to have all the Upgrades which are required to have Upgrade U.

What I want to do is to list all buildings with all upgrades available for them. I've been trying for almost whole day to solve this issue with different inner, left and right joins, subqueries and what not but I can't really do it in a clean way.

The only working thing is a query, which I am ashamed of because it seems like a real waste of CPU time to me:

SELECT BUPG.BuildingID, PRE.UpgradeID, COUNT(PRE.PrerequisiteID)
FROM BuildingUpgrades BUPG
JOIN Prerequisites PRE ON BUPG.UpgradeID = PRE.PrerequisiteID
GROUP BY BUPG.BuildingID, BUPG.UpgradeID
HAVING COUNT(PRE.PrerequisiteID) =
(
SELECT COUNT(PrerequisiteID)
FROM Prerequisites
WHERE UpgradeID = PRE.UpgradeID
GROUP BY UpgradeID
)

What it basically does is takes all the available Upgrades, counts prerequisites that have been met by the building and checks if it's equal to the number of all prerequisites for that Upgrade. And it works but I still think there is a much better way to do it.

Determining Which Table To Query Based On Data Within Tables
I have 2 tables:

default_categories
column 1: category_id
column 2: category_name
column 3: category_parent

custom_categories
column 1: custom_cat_id
column 2: custom_cat_name
column 3: custom_cat_parent

The custom_categories table won't necessarily have anything in it but if it does, I need to choose the data from the custom_categories table over the data from the default_categories table.

So if the default category has 3 rows with IDs | names:
123 | Dogs
456 | Cats
789 | Fish

And the custom category has 1 row with IDs | names:
456 | Very Cute Cats

I want my query of these 2 tables to produce the following IDs | names:
123 | Dogs
456 | Very Cute Cats
789 | Fish

I've tried joins like the one below but they aren't working because if there is no custom_cat_id, it won't give me the result for the default category_id.

MySQL
SELECT *
FROM default_categories
LEFT JOIN custom_categories ON category_id = custom_cat_id
WHERE category_parent = ''
AND custom_cat_parent = ''
ORDER BY $order_by $sort

Returning Rows In Left Table Based On Mutliple Criteria In Right
This is starting to get to me. I'm sure there's a simple way of handling what i'm trying to do, but someone might be able to help out quicker than spending another hour searching and testing for this. Here's the problem:
Simplified tables:
ARCADES
=======
ID,
name
GAMES
======
ID,
name
ARCADES_GAMES
=============
ID,
arcade_iD
Games_ID
Straightforward enough so far right? I'm trying to get all arcades that have ALL games in a passed in set of game_id's. So for instance I might want all arcades that have the games 11 and 14, but it must have both those.
I can do soemthing like...

SELECT a.name
FROM arcades a
WHERE EXISTS(SELECT 1 FROM arcades_games
WHERE arcade_id=a.id AND game_id IN (11,14))
But that'll return all rows that match ANY of (11,14) rather than ALL of 11,14.

It all comes down to the simple thing of getting rows in a table where all criteria from a list is met, but any advice on how i would do something like this?

Alter Table Based On Comment Header In Import File
I have a text file which is the output of a Perl script that parses Windows Media Log files into a media analytics table. There are some additional columns which are defined by the customer so the actual table format can and does change. The engineer who provides this table has created a comment header with revision information as well as column names. Is there anything I can do to have MySQL look at the comment header and alter my table to include the newly added columns without destroying any data in the table? The column names would always be in the same line in the import file and when a new field is added, it would be appended to the field list, not added anywhere in between existing fields.

Example:

# FIELDS: client_ip,date_YYYY-MM-DD, time_HH:MM:SS,http_method,c_url,status_code,
total_bytes,transfer_time,"referrer",referrer_host,"user_agent",
total_object_size,byte_range_start,byte_range_end,last_byte_served_flag,
first_byte_served_flag,all_bytes_served_flag, akm_c_ip_country, akm_c_ip_dma, akm_c_ip_lat, akm_c_ip_long,CPROG,MARKET,NG_FORMAT,SITE_ID,STATION_ID,PCAST_TITLE,PCAST_AUTHOR,
PCAST_CAT

Update Column In Table A With The Count Of Another Table
Having my SQL-background in Oracle I'm looking for the MySQL equivalent for:

update tableA
set column1=(select count(*) from tableB where tableA.key= tableB.key)

cannot find anything similar in the manual, but probably overlooking
something.

Update One Table Value With Values From Another Table
I am trying to update one table value with values from another table, and I cannot get it to work. What am I doing wrong?

This is my SQL-command:
UPDATE tabel1 SET tabel1.name=tabel2.name WHERE tabel1.ID=tabel2.ID

Update Table A For Every Instance In Table B
I have learned how to select records from two tables but now, I need to update every record in table A based on keys found in table B.

I have a KEY which I can match to records in table B and table B has a field which I can match to records in table A. I need to update table A and possibly table B.

How do I go about this?

Update Table With Info In Other Table
i have a case like this:

table table1 (key, accumulator)

table table2 (key, counter)

i want to, for each table1.key = table2.key, update accumulator with the info in counter, something like this:

update table1 set accumulator=accumulator+table2.counter where (? counter is the value related with the same key as the one in table1)

how do you write a sentence like this one?

Update Table From Temporary Table
I have an import process that creates a temporary table and then dumps a large amount of records into it. I need to update an existing table against this temporary table. So where the record exists I either want to update or replace (probably based on parameter but can be a separate query for each) it in the live table, and if it does not exist i want to add it.

The temporary table can contain a large number of records (100000-200000). How can I create a fast and efficient process for doing this? Is there a query I could write to do this or would I have to do this through through code (i'm working in a java environment). I think a query would be faster than processing that many records via jdbc.

Update Table With API
I'm trying to develope a getway between matlab and mysql. I would like to
write the result of matlab routine into mysql table without "UPDATE
.....SET..." statement, because I've have to write a different value for each
row and I have to write a lot of row. I would like to write table row by row
sequentially.

UPDATE Table SET
Does anyone know how to implement this into a php form CORRECTLY? I have all the proper syntax but then the server gives me a message that says the mysql version may not go along with the syntax. How do I work around this then? I need to update query strings and such and nothing will work.

Update From One Table To Another ????
I have two tables with linked fields, a one to many relationship. It is a item sold table to work order table where there are many items sold linked to a single workorder. I want to add up all the item taxes for the particluar workorder and instert it into the appropriate workorder. I have tried something like this:

update set workorder.tax (sum)woitem.tax where workorder.id=woitem.linkid

Can someone show me where I am going wrong?

Table Update
How do I relate such a way that I update a column of the main table, another secondary table's column related to the main table gets updated automatically?

UPDATE From One Table To Another
This should be so simple but I'm getting a very strange error??

I'm using MySQL version: 4.1.12-log

I've got an outdated country table that I'd like to update info from an ISO table. Pretty straight forward if you ask me.

Here's the query:
UPDATE country, isocountry SET country.un_numcode=isocountry.numcode
WHERE country.country_code=isocountry.iso;

I created a column called un_numcode and then I'd like to put the iso numcode info in my table where the country_code = iso code (same data, different field names in different tables).

It goes along really well for 38 rows out of 239 rows?? And then I start getting 127 in ALL the un_numcode fields even though that value does NOT exist in the country.numcode table!

Update Table
Im trying to update a table, but Im getting the following error...
Syntax error or access violation: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 5

Here's my code...

<cfquery>
UPDATE printers SET name= 
<cfif IsDefined("FORM.name") AND #FORM.name# NEQ "">
'#FORM.name#'
<cfelse>
NULL
</cfif>
WHERE printerid=#FORM.printerid#
</cfquery>

Update Table
What is the right syntax of UPDATE command, I want to use multiple (more than 5) WHERE clauses and update more than 2 fields.
UPDATE table SET UPDATE1 =â€™xyzâ€™ UPDATE2 = â€˜abcâ€™ WHERE 1=â€˜zxcâ€™ 2=â€™werâ€™ â€¦â€¦â€¦â€¦?

Update Table
I want to update a number in a column adding a 1 to the current number, however I don't want to select the table first.

Update Table
everytime it tried to update row in any table, it takes very longtime, it locks the table, then i run out of connections and mysql crashes.

2-table UPDATE
I am running the following query through PHP's mysql_query:

UPDATE hotel, hotel_brand
SET hotel.hotel_brand_id=0, hotel_brand.hotel_brand_parent_id=0
WHERE hotel.hotel_brand_id=6 AND hotel_brand.hotel_brand_parent_id=6

In actuality, it's two queries combined into 1. I am deleting a value that rows in these 2 tables reference, and want to set the values to 0.
Of course, the problem is the values aren't changing to 0.

Is splitting these up the best solution?

Update One Table
I have 2 tables one for the team standings one for the scores, this select statement will calculate win loss :

SELECT
SUM((homescore>awayscore and home=teamid)
OR (awayscore>homescore and away=teamid)
) as wins,
SUM((homescore>awayscore and away=teamid)
OR (awayscore>homescore and home=teamid)
) as losses
FROM scores, teams
order by teamID

UPDATE Table
Code:

UPDATE table SET field='select concat(field1,field2) from table'

This gives me a zero in my field
I can select concat separately without any problem

Using Import To Update Table
I'm working on a business directory site that I created using phpmydirectory. All of my data was imported into mysql from the admin area of my site.

My category table has ID, Title, Description, and Keywords fields. At the time that I imported my business listings, I left the Description and Keywords fields blank. I am now wanting to go in and add descriptions and keywords to each category. I would like to setup a simple spreadsheet and fill in the description and keywords for each category, and then use Import in PhpMyAdmin. Is this possible? If so, how would I set it up? Am I making sense? I really have no idea on how to use PhpMyAdmin. I can browse around and export when I need to, but I'm scared I'll screw something up if I try to update a table.

Update A Table Being Selected?
Is there a relatively easy way to fix this bad decision I made long ago? I created a table thusly:

CREATE TABLE `blah` (
`mod_date` date NOT NULL default &#55612;&#57200;-00-00',
`mod_time` time NOT NULL default ༼:00:00',
) ENGINE=MyISAM DEFAULT CHARSET=latin1;
I added a new field to the table that looks like:

`modified` datetime NOT NULL default &#55612;&#57200;-00-00 00:00:00'
I thought I could update it with:

UPDATE blah
SET modified=(SELECT CONCAT(mod_date, ' ', mod_time) FROM contacts);
But a search in this forum showed that one can't UPDATE a table that is being SELECTed from. There was mention of a temp table (and perhaps JOIN(?)), but further searching has left me wanting.

Update A Table With Values In Another
I have the following table

tableA
column_a
column_x
column_y
column_z

tableB
column_x
column_y
column_z

How do I update the rows of tableA that match rows of tableB (all rows
of tableB are unique)

What I want to acheive is a check against tableA.column_x with
tableB.column_x, if they match, then update the row in tableA.column_y
with the value of tableB.column_y and tableA.column_z with
tableB.column_z

Update Table Problems
I'm trying to update a table where specific values are in another table. Here is the update statement I am using:

UPDATE Route_Detail,Routes SET Route_Detail.Trip_Calc='S'
WHERE Routes.Route_ID = Route_Detail.Route_ID
AND Routes.Project_Code = 'OSUT'
AND DATE_FORMAT( Route_Detail.R_Date, '%m%Y' ) = 072006

This statement runs but does not update any rows.

This select statement returns 11 rows:
SELECT RDetail_ID
FROM Route_Detail
INNER JOIN Routes ON Routes.Route_ID = Route_Detail.Route_ID
WHERE Routes.Project_Code = 'OSUT'
AND DATE_FORMAT( Route_Detail.R_Date, '%m%Y' ) = 072006

How do I get the UPDATE statement to update those 11 rows.

I'm using MySQL 4.1.21-standard version.

Very Slow Table Update
I have two tables. One is really a subset of the other. However, they came in different data files and I would like to pull data from one and put it into the other. However, it is VERY slow!

Once the tables are setup I will only read from them and perform operations. I will never update or insert. However, I can't get things setup to that point. Code:

Update Table By ID Ranges
How do i use the UPDATE statement to update a range of Primary Key id
numbers. (let say 100 through 1000).

Example,

UPDATE testTable set testField='9999' WHERE
test_id in (100:1000);

Fields In Table Will Not Always Update,
I'm using C#, ASP.NET and MySQL, The language is no problem (not to much) but the rest well I wonder. I have a DB table that has 5 seperate fields. A main one that
is Integer and the rest are VarChar(50). each of the 4 others are identical in setup. I can change some records and others I can't.

ID int(10),
std varchr(50),
atd varchr(50),
dtd varchr(50),
ctd varchr(50)

I update say 'atd' with new data, Date, Time and a code of 15 letters/numbers.This one takes, I change to another record and try to update ctd and it shows like it takes but when I use the Command Line it shows no updates on ctd. this is random on this also.
If I change to another record it may all work or not. Any Ideas at all?

Update Fields In Table
I am trying to update multiple records,rows,fields in a table. Below is what I am placing in the sql field in phpmyadmin. It works with one update line but not more. What am I missing here?

UPDATE Products SET TitleTag='U.S. Air Force Retired Shop On-Line for Flags of the world - US, International Flags ' Where Product_ID=28;

UPDATE Products SET TitleTag='Vietnam Veterans of America Shop On-Line for Flags of the world - US, International Flags ' Where Product_ID=29;

Update Table Values
I have a csv.txt file with contacts and their information in it. Then I also have a table in mysql with the same contacts and their various information. I need to merge these to so that if a field value in the database is NULL the value that is in the csv.txt file is inserted into the database field.

I have been looking at the mySQL site on how to do this but have not been able to produce a working solution. Below is a more detailed example of what I am looking for. Code:

UPDATE From A Linked Table
I wanna update the table COMPANY from a linked field. The following is not
accepted. Could anybody help me with what the command should be?
Thanks a lot.

UPDATE `COMPANY`
SET `COMPANY`.Region_ID =
(
SELECT `Area`.Region_ID
FROM `AREA`
WHERE `COMPANY`.Area_ID = `Area`.Area_ID
)

Multiple-table Update With Sum()
I have the quantities from different warehouses for each product in products_quantities, and the aggregate quantity for each product in products. I want to update products with the total from products_quantities. Why does this not work?

UPDATE products p, products_quantities pq
SET p.products_quantity = SUM(pq.quantity)
GROUP BY pq.products_id

I've tried every variation I can think of, but always get a syntax error near 'GROUP BY pq.products_id'. Can I not update one table with the sum of values from another table, in one query? I'm using 4.0.26.