Default Value On A Column
Hey guys, my hope is to quickly move from SQL2005 to mySQL and i'm hitting the GUID roadblock. If mySQL can't do a GUID by default on a column, I've got to rewrite a ton of my application around that. Tell me with 5.0 this is possible now? Or that there's some cool work-around?
View Complete Forum Thread with Replies
Related Forum Messages:
Use Now() As Default Value For A Column
I cannot find any good material on this, and it seems like it should be so easy. I have two columns in my table, creation_date and last_modified_date. I want the creation_date field to bear the default value of Now(), so that when a row is created the timestamp is there. This value should never change, and should only be set on row creation. The last_modified_date field I want to change on the UPDATE only. It seems that this may be possible using the TIMESTAMP type and the default values there but what I read is that they will update everytime a row is altered. This would be dead-simple if I could just specify Now() as the default value.
View Replies !
Default Value For A Column, When Value Is Not Specified
We have migrated our database from DB2 to MYSQL. In DB2, there is an option like 'GENERATED BY DEFAULT AS IDENTITY' which will cause DB2 to generate unique values for the identity column during insert operations if no value is specified for the identity column. However, if a value is specified for the identity column, DB2 will use it in the insert operation. In MYSQL, is there an option like this?
View Replies !
Default Value On Date Column
Using MySQL control center, I created a MySQL database table with a column of Date type. It always give the a Default value (0000-00-00) even null is allowed. I tried remove the default value and it comes back by itself. So if I don't supply a value when insert, the default is used. Query IS NOT NULL will not exclude this record. Now, In VB (with ADO/MyOLEDB), I did the exact query trying to filter out the null record. But I still get the record just like in Control Center. BUT, the value on this column is "NULL". How can I leave the Date field as null if no value is supplied?
View Replies !
Column Default Value Setting
I've got a column called 'articleheader' in a table called 'article'. It currently has a default value of NULL, but i want to set it to default to "(none)" (without the double quotes). I have tried searching to find a solution but everytime I try the posted "solutions" I get an error. I think it is because I don't specifiy the type of column it is or something.
View Replies !
How To Set The Default For A Datetime Column To Curdate()
I'd like to set the default value for a datetime type column in a table to today's date. It seems I should be able to do this with the CURDATE() function. I tried adding a call to the function in the default value field when creating the table's column, by when I save the table the default reverts to "0000-00-00 00:00:00" I've done this in other RDMSs. How can I do it in MySQL?
View Replies !
#1101 - BLOB/TEXT Column 'data' Can't Have A Default Value
Im using phpmyadmin for working with mySQL. (its my local version, im just trying to use it). When i want to add BLOB type column in table - that mistake appears: #1101 - BLOB/TEXT column 'data' can't have a default value I turned off strict mode (from my.ini, or by config wizard), but it did not help. I've found alot about that problem in that site, but i dont uderstand anything, because im just Newbie. So what should i do to make BLOB/TEXT column have a default value? Is it possible without using hard way, just by changing something, or download any new version?
View Replies !
Date/Time As A Default Values For A Table Column
I am new to mySQL, so this question might be simple.I want to add a default value to a column that is the current date/time. I am using the mySQL Administrator and will not allow me to use a function like CURRENT_TIMESTAMP() or NOW() as a default value. I used to do this with other databases (I always add a column to all of my tables called InsertDateTime and UpdateDateTime. It helps to track down data entry problems)
View Replies !
Error #1293: There Can Be Only One TIMESTAMP Column With CURRENT_TIMESTAMP In DEFAULT Or ON UPDATE Clause
I am using MySQL 4.0/4.1 version. And I am trying to add two timestamp columns to a single table. The columns are insert_date and updat_date to capture the date/time the record was initially inserted as well as the date/time the record was last updated respectively. When I try to set one column (insert_date) with a default value of CURRENT_TIMESTAMP and the other column (updat_date) with ON UPDATE CURRENT_TIMESTAMP, I end up getting the following error: #1293 - Incorrect table definition; there can be only one TIMESTAMP column with CURRENT_TIMESTAMP in DEFAULT or ON UPDATE clause Is there any way around this problem?
View Replies !
Can I: Export Column, Optimize & Fill New Column With Value To Original Column?
I have a database with over 40,000 rows and 28 columns (learned how to import large files by changing php.ini!). Using Excel, I am able to: (A) copy and paste original column (e.g., SIZE_TEXT) (B) ALONG with each records' UNIQUE_KEY, (C) sort SIZE_TEXT column, (D) filter for unique values, (E) fill new column with its SIZE_TEXT__KEY, and then (F) import the new SIZE_TEXT_KEY value into the database by creating a new column or pasting over the columns original value. However, I think this can be performed, with less potential for error, using phpMyAdmin, but I haven't found anything demonstrating how to perform these actions. I searched the terms optimization and normalization. I am hoping one can use phpMyAdmin to: 1) create a new table with export column of the original table (SIZE_TEXT_TABLE), 2) sort new table for duplicates and show only unique values, then 3) import the column results into each Unique Records original column (SIZE_TEXT) 4) link new column values to Foreign Key (the Parent Table's SIZE_TEXT_KEY)
View Replies !
Selecting From Column A Where Column B Matches Column A Twice?
Here's a table called Creatures containing Creatures and EntryIDs: Code: [Creatures] Creature EntryID ================== fish 100 cat 100 fish 200 bird 200 pig 300 bird 400 I would like to select all EntryIDs that contain both "fish" and "bird". From the above table, "200" should be returned, seeing as both fish and bird are the only rows that both use the same EntryID. How can I do this? Do I need to use Group By or Left Join or something?
View Replies !
Selecting Records, Then Summing Parts Of A Column, Then Sorting By That Column...
I’m keeping track of baseball stats, and each row represents one line of stats (from a box score) for one player of a single game. Because of this, a single player may have multiple rows in the table. I want to cumulate each player’s stats (so they’ll be one row per player) and display as output, which isn’t a problem. Then I want sort by a certain stat, but by now I’ve already looped through the table, so I can’t sort using a mySQL query at this point. I tried first putting values into an array in a previous project, but that became extremely complicated. What’s the best way to approach this?
View Replies !
A Date Column That Auto-updates When Any Column In The Row Is Updated
Let's say I have a table with several columns. I would like to add a column called "date last updated". How this would work is that any time one of the other columns in that row was updated, the 'date last updated' column would update. I *know* how to do this with PHP, but here is the special part... Is there a way to have this automatically just within MySQL, so that EVEN IF if update a column manually through the command line or PHPmyAdmin, the 'date last updated' field updates.
View Replies !
Specifying Default ''
does specifying default make the table smaller, like setting_title varchar(32) NOT NULL default '', instead of setting_title varchar(32) NOT NULL, make the entire row smaller, instead of a blank 32?
View Replies !
Bad? Id Int(11) DEFAULT '0'
I'm trying to install the authlib module that's required for the open-source iOutliner web-based outliner (http://ioutliner.com), but it fails halfway through when creating the tables: //Bad! /* SQL Error: Invalid default value for 'id' */ $query = mysql_query("CREATE TABLE authlib_data ( id int(11) DEFAULT '0' NOT NULL auto_increment, name text NOT NULL, email text NOT NULL, age int(3) DEFAULT '0' NOT NULL, sex text NOT NULL, school text NOT NULL, PRIMARY KEY (id) )"); //Bad! /* SQL Error: Invalid default value for 'id' */ $query = mysql_query("CREATE TABLE authlib_login ( id int(11) DEFAULT '0' NOT NULL auto_increment, username text NOT NULL, password text NOT NULL, PRIMARY KEY (id) )"); According to Google, DEFAULT '(0)' seems a legit instruction. What's wrong with this?
View Replies !
Default Date??
I have a field (called active) of type DATE and I want to add a default value. The default value must be the current date. Is this possible to do this in the table create statement? CREATE TABLE mytable ( id INTEGER NOT NULL AUTO_INCREMENT, active DATE DEFAULT ?????, PRIMARY KEY (id), )
View Replies !
Default Permissions
This is a fairly simple question but I'm new to mySQL. To log on to mySQL I need to type at the prompt: mysql --user='username' --password='password' as opposed to just typing mysql and being recognized without having to type identification. Anyone know how I can change this?
View Replies !
Timestamp Default Value
I am using: mysql Ver 12.22 Distrib 4.0.18, for sun-solaris2.9 (sparc) And I do this: mysql> create table test (a timestamp default null, b timestamp default null); Query OK, 0 rows affected (0.03 sec) mysql> desc test; +-------+---------------+------+-----+----------------+-------+ | Field | Type | Null | Key | Default | Extra | +-------+---------------+------+-----+----------------+-------+ | a | timestamp(14) | YES | | NULL | | | b | timestamp(14) | YES | | 00000000000000 | | +-------+---------------+------+-----+----------------+-------+ 2 rows in set (0.00 sec) Can anyone tell my why the default value for column 'b' is not NULL as well?
View Replies !
Changing A Default Value
i have a column that originally assigned a default integer value (1) to a column that contains about 1000 records. now, i'd like to replace all those with an incremented value. i figured out how to change it so newly added data is incremented, but cant seem to figure out the command to go back and change all data from the beginning so that it is now incremented.
View Replies !
MySQL Default Value
When a customer places an order, the database sets the default at "3" which means "not complete" when it is complete and billed, It is assigned a "1" I want to have it be assigned a new number on all future orders, but no not want it to go back and reset every single past order. If I change the default value number in the database, will it only apply to new orders, or will it change every single record to the new default regardless of their current status?
View Replies !
Set Default Collation
However I recently tried MySQL 4.1.x and noticed that there have been some changes. My questions are:- 1) The default collation setting is Latin1_swedish_ci. What do I need to change this to in order for my old tables to import correctly? Currently special chars like tm <- trademark import as ? <-Question Marks? 2) How do I set my own default? 3) Is there any way to export a new database back to an old version of MySQL eg 4.1.x -> 4.0.x?
View Replies !
Default Character Set
I have a problem with character set client and connection. I have all tables in cp1250_czech_cs collation and I have set a global session character_set_client, character_set_connection and character_set_result to cp1250. When I make a connection to the database in PHP (mysqli_connect()) and execute a query SHOW SESSION VARIABLES; it return that character_set_client, character_set_connection and character_set_client is set to latin1. What can I do, when I want to set this variables to cp1250 as default? (and not use SET NAMES cp1250; in each script).
View Replies !
[Default] Order
I have a MySQL database with a table that I assumed "by default" would insert records in chronological order - i.e. just add each record to the end of the table. What is happening however is that 'some' records are inserted just somewhere in the file - not at the end of the table. I can tell this because there is a date field in the table. How do records get added to a database? by key, index, ???? Is there some way to force a record to be added to the bottom of the table? Key info about the table: . there is not a primary key. . there are 3 index's
View Replies !
Field Default Value
This may have already been asked. But I couldn't find anything. (Maybe I am asking the wrong question).How do I find out the default value of a field using php? Something similar to mysql_field_name() or something.
View Replies !
Overriding Default
Can I change the default minimum length of words in Fulltext Search without having to ask my web hosting company to do it? I mean, change the value using through PHP script?
View Replies !
Timestampt Default
When I create a timestamp field in phpmyadmin it's default is always 000-00-00 00:00:00 instead of just a number. Anyone know why and how to change this? I tried deleting the default but when I hit save it puts it back in.
View Replies !
Default Field
There is a table, with some fields including an auto_increment field, some more integer type, text,varchar etc type of fields. 2. I am trying "SELECT * FROM myTable" [No ORDER BY clause used] question: Which field will be used by default, for ordering the records? Will it be the primary key(which is auto_increment) always?
View Replies !
Default Autocommit=0?
Is there any way I can set up mysql client so that the default value for autocommit is 0? This is for when I'm running the command line client on linux/windows or the Query Browser on windows. I would feel much more comfortable that I'm not going to accidentally put in the wrong where clause and update or delete a bunch of records. I like to use the number of rows affected by my query as a double-check that I've done what I intended to do, and then commit it. I've searched around but could not find any mention of this issue -- all of the postings on autocommit that I found have to do with accessing mysqlserver from a program such as java or PHP.
View Replies !
DEFAULT DATE
I need a sistem variable for get the actual date when I create a table. I use sysdate in Oracle and it works, but i have not idea about mysql. I want to use into a create table like this: CREATE TABLE users( id_user int PRIMARY KEY, registrationday date DEFAULT sysdate );
View Replies !
How Set Default To CURRENT_TIMESTAMP?
I have a column of type datetime which I would like to have a default value of CURRENT_TIMESTAMP. I have tried: ALTER TABLE table1 ALTER dateEntered SET DEFAULT CURRENT_TIMESTAMP but this gives a syntax error, probably because it wants a literal at the end there.
View Replies !
Default Value For Date
CREATE TABLE ... `birthdate` DATE DEFAULT CURRENT_DATE(), ... doesn't work - produces syntax error. Anybody know how to declare current date as the default value for a DATE column?
View Replies !
DATE DEFAULT ...
If I want to use date for my column and I want to set a default for it what do I specify? I know for timestamp I can use current_timestamp but what do I use for date?
View Replies !
DATETIME - Set Default Value
I have a database table (MYSQL v5.0.67) in which I store several date fields. I have set these all to be not null and to have a default value of '0000-00-00 00:00:00' e.g. `last_login` DATETIME NOT NULL DEFAULT '0000-00-00 00:00:00', However when I run my create database script (generated from a schema design in MYSQL Workbench) it complains as follows: Error Code : 1067 Invalid default value for 'last_login' I leave it as nullable with no default value and run the script to create the table which works fine. I can then use a tool like SQLyog to alter the table generated and set this to be not null with a default of 0000-00-00 00:00:00 and it is happy to alter the table. Obviously this is not ideal and it should work straight from the script.
View Replies !
What Is Default Database Name
I want to specify access options for MySQL. Please tell what is MySQL hostname, MySQL username, MySQL passoward & MySQL database name for the connection to the MySQL server.
View Replies !
Select Default Value
two tables: master_table ( id int not null, work_id int not null, sub_work_id int not null, primary key(id) ) ref_table ( id int not null, work_id int not null, sub_work_id int null, name varchar(20), primary key(id) )
View Replies !
How Do I Set A Default Date Value
I have tried putting in now() via phpmyadmin as the default value and my new record entries return a value of '0000-00-00'. My purpose is to have a default created_date of the time mySql writes each new row.
View Replies !
Default Delimiter Not Set
No query specified. The only way to end it was CTRL+C. Using g and G work normally, and if I manually type "DELIMITER ;", then I can use the semicolon just fine (until I log out and back in again.) Is there some configure option I need to use to make sure the semicolon is the default delimiter?
View Replies !
Default Block_size
I would like to ask what would be the default block_size in mysql 5.1.33. Just like in oracle, the block_size may vary or depend on the OS block_size. Is the block_size in mysql same with each storage engines.
View Replies !
NOT NULLs With Default
I'm cleaning up a database but I see this all over the MySQL world. I understand that having defaults speeds things up. But what I don't understand is why someone would make a field NOT NULL and then put a null default in it? This makes no sense to me at all. Is this the fault of using phpMyAdmin to create tables? Here's a sample: CREATE TABLE `listnames` ( `id` int(11) NOT NULL auto_increment, `list_name` char(30) NOT NULL default '', `display_name` char(100) NOT NULL default '', `active` char(3) NOT NULL default '', `last_modified` timestamp(14) NOT NULL, UNIQUE KEY `id` (`id`) ) Ok, so you don't want NULLs in your data but there is no default. It's very likely that the data will be wildly differently. So setting a default makes no sense -- or does it? I don't want to drop the default '' if it makes sense & I'm just not getting it.
View Replies !
DATETIME DEFAULT Now().
I would like to know in what way, I can set the default value of a DATETIME field to Now() so I don't need to put the code in my scripts. ALTER TABLE `tbltest` CHANGE `TheDate` `TheDate` DATETIME DEFAULT 'Now()' With the ' ' it doesn't error, but it's probibly just sending the string "Now()" and I get the default date 0000-00-00. If I take off the ' ' I get an error. Anyone know a way I can set my default value for my DATETIME field to automatically insert the date and time with each new record?
View Replies !
NULL Default Value
I have a simple table. I'm using phpmyadmin. As you can see my default values for NULL are 0 but for some reason wen a null value is posted to the database it appears as "NULL" instead of "0"....
View Replies !
Default For The Type SET
I've created a database with a field of the type SET. Something like this: SET('choice1','choice2','choice3'). The default choice is the empty ('') string. Do I have to also define the empty string in the set like this SET('choice1','choice2','choice3','') or is this not necessary?
View Replies !
|
TRACKER
