UPDATE `phpbb_topics` SET forum_id=5 WHERE forum_id=4 AND `topic_first_poster_name` LIKE "%ozerway%";
Moderator's Comments:
Neo: There is no compelling reason to delete this (almost) duplicate reply. It shows a different order / perspective. So, I restored this post (undeleted) it.
Hi all,
I was wondering if anyone knew a good/safe way to update a single column in a table that could contain upto 8 million rows...
simple command like:
UPDATE set blah=foo where bar=XXX;
I will be running this on tables being written to and tables that have already been created.
... (3 Replies)
Hello.
I'm not sure how I can get around this, or what I am doing wrong, but I need some help. :)
I want to do an select query looking like this:
SELECT venue, SUM( amount )
FROM IWD
WHERE venue = 'Foxy Hollow'
Unfortunately I need to have spaces in the names in these fields,
is... (10 Replies)
Hi All,
I need to update 2 rows in my file. But i can do only one row update by sed command. Please help me how can i change mutltiple rows in single sed commana
my i/p file: (example.txt)
record
integer (10) present_id;
string (10) first_name;
string (10) last_name;
string... (2 Replies)
Hello,
Met a problem when I tried to insert rows to MySQL database from an old book that fits my learning level (MySQL and Perl for the Web, by Paul DuBois, 2001). First, under mysql console I created a database: webdb and the table: todo. Then I draft the perl-cgi script to have online page.... (0 Replies)
I feel stupid for asking this because it seems that MYSQL code isn't working the way that I think it should work.
Basically I wrote code like this:
select * from `Test_DC_Trailer` HAVING max(DR_RefKey);
Where the DR_RefKey is a unique numeric field that is auto iterated (like a primary key)... (7 Replies)
Hi, i want to create a table automatically based on another table (sms_key).
For example;
If user create a new row with sms_keyword field: IRC then a table created automatically (with some field on it, like: name, ph_number, messages).
select * from sms_key;
+-------------+
|... (1 Reply)
Dear community,
I have to split string in table and list all values. I'll skip the code and jump directly to mysql query.
This is the table:
category title
======= =======
7,3 title 1
1,3 title 2
1,2,3 title 3
Now, what I need is split category into single... (2 Replies)
Right I have a MYSQL database with table1 with 3 columns, colA, colB and colC. I want to combine the data in the 3 columns into a 4th column names col_comb. Here's the SQL command that works:
UPDATE table1 SET `col_comb` = CONCAT( `colA` , ' - ', `colB` , ', ', `colC` );
So now I want this... (5 Replies)
Discussion started by: barrydocks
5 Replies
LEARN ABOUT REDHAT
update
UPDATE(7) SQL Commands UPDATE(7)NAME
UPDATE - update rows of a table
SYNOPSIS
UPDATE [ ONLY ] table SET col = expression [, ...]
[ FROM fromlist ]
[ WHERE condition ]
INPUTS
table The name (optionally schema-qualified) of an existing table. If ONLY is specified, only that table is updated. If ONLY is not speci-
fied, the table and all its descendant tables (if any) are updated. * can be appended to the table name to indicate that descendant
tables are to be scanned, but in the current version, this is the default behavior. (In releases before 7.1, ONLY was the default
behavior.) The default can be altered by changing the SQL_INHERITANCE configuration option.
column The name of a column in table.
expression
A valid expression or value to assign to column.
fromlist
A PostgreSQL non-standard extension to allow columns from other tables to appear in the WHERE condition.
condition
Refer to the SELECT statement for a further description of the WHERE clause.
OUTPUTS
UPDATE #
Message returned if successful. The # means the number of rows updated. If # is 0 no rows are updated.
DESCRIPTION
UPDATE changes the values of the columns specified for all rows which satisfy condition. Only the columns to be modified need appear as
columns in the statement.
Array references use the same syntax found in SELECT [select(7)]. That is, either single array elements, a range of array elements or the
entire array may be replaced with a single query.
You must have write access to the table in order to modify it, as well as read access to any table whose values are mentioned in the WHERE
condition.
By default UPDATE will update tuples in the table specified and all its sub-tables. If you wish to only update the specific table men-
tioned, you should use the ONLY clause.
USAGE
Change word Drama with Dramatic on column kind:
UPDATE films
SET kind = 'Dramatic'
WHERE kind = 'Drama';
SELECT *
FROM films
WHERE kind = 'Dramatic' OR kind = 'Drama';
code | title | did | date_prod | kind | len
-------+---------------+-----+------------+----------+-------
BL101 | The Third Man | 101 | 1949-12-23 | Dramatic | 01:44
P_302 | Becket | 103 | 1964-02-03 | Dramatic | 02:28
M_401 | War and Peace | 104 | 1967-02-12 | Dramatic | 05:57
T_601 | Yojimbo | 106 | 1961-06-16 | Dramatic | 01:50
DA101 | Das Boot | 110 | 1981-11-11 | Dramatic | 02:29
COMPATIBILITY
SQL92
SQL92 defines a different syntax for the positioned UPDATE statement:
UPDATE table SET column = expression [, ...]
WHERE CURRENT OF cursor
where cursor identifies an open cursor.
SQL - Language Statements 2002-11-22 UPDATE(7)