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Default With Field Type Of 'text'


When i try to put a default value on my field in phpMyAdmin, it does not work. The field was text. When i change it to VARCHAR it accepts the default value.




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TEXT Field Type
Is there a way to limit the field type TEXT to only store up to 1000 chars? or is it something that you can limit in your script when storing data?

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Field Type For Long Text
Need to store unlimited text. What is the best field type and settings?

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Field Type To Store Text With Commas
I need to change my field type to allow for commas in the field name. So I tried to change my text from "varchar" to "text". However, I am getting this error: #1170 - BLOB/TEXT column 'title' used in key specification without a key length

Can anybody tell me if text is the right type to use? If so why isn't my database allowing me to make this change?

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Changing Field Type From Longtext To Full Text
Can I change a field type from longtext to full text without erasing the data in the field?

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Default For The Type SET
I've created a database with a field of the type SET. Something like this:

SET('choice1','choice2','choice3').

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Date Type Default Value
I would to give the CURDATE() value to a date field as null value. I wrote:

sql_fecha` date NOT NULL default 'CURDATE()',
and I get :

Error #1067 - Invalid default value for sql_fecha

I take off the () and got the same result. I also cast the expression as :
CAST( CURDATE() AS DATE) and the same error.

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Default Table Type On MySQL 5
I seem to recall reading somewhere that InnoDB was the default table type for MySQL 5. Yet when I did a 'show table types' it indicated that MyISAM was the default type since version 3.

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Does PK Field Type Have To Be Same As FK Filed Type?
I have a table with a primary key and, in another table, a foreign key to that 1st table needs to be set. should both fields have the same type i.e. where the PK is a 'int(11)' should the FK field be 'int' as well. And if so does it neeed to be limited to 11 as well?

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Why Can't TEXT Have A Default Value?
I need a default value for a TEXT field. It won't allow me to though . What is a matching field type that I can use?

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Field Type :: Time Field With Decimal
I want to add times into a field in the form mm:ss.d such as 03:33.5 but when I use the time type it removes the decimal but I really need it to keep it in.

At the moment I am using a char(10) type and converting it in my scripts. Is there a way I can add it in using the correct type? I couldn't see anything in the documentation on the time type except that you could enter it in the form I want but it will convert it.

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Need To Insert Data From A Text File Into A Medium Text Field.
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Text Data Type
Just how big a file can the Text data type contain (in kilobytes or Megabytes)? How big a file can a MediumText data type contain (in kilobytes or Megabytes)?

'Text' = 64 KB
'Mediumtext' = 16384 KB = 16 MB

There are a few bytes needed to store information about the field itself.

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Text Type Records
I posted this problem in another forum and nobody seems to know how I might go about solving it. I have a number of records stored in a database and I've enabled full-text indexing and have indexed the columns that have the text types in them. I am able to do selections with contains(subject, '<keywords>') and freetext(subject, '<keywords>').
What I would like to do now is add a little functionality to my search engine program (oh yes-I use a java applet to connect to my db with JDBC) so that I can select a record that is returned by one of my keyword searches and search the rest of the stored records for similar records.
I suspect this can be done using the indexing features but I am not sure where I can go to find information on how to do this (I'm also not 100% convinced that it can be done with indexing)

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Text And Varchar Type
What is the main difference of these two types,
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Data Type TEXT
I created a form that user can enter comment .In database i create a culomn comment TEXT NOT NULL,
When the user enter the comments, comments dint record completely in database .for example user enterd 500 word but database store only 200 words,Whats the problem.I use TEXT as data type but it dosent work

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#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?

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Null And The Text Data Type
Why do we use null values? Why is it better than an empty field?
What would be a real life situation were nulls are important to have?
If I have a paragraph of text in a field of data type: TEXT. Can I
search in this field? Maybe i mean, could i use SELECT on a table
and get rows on the basis of a string or substring in the TEXT field?

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WHICH ONE TO USE TEXT TYPE OR VARCHAR(5000)
In my project I have a note(Comment) field. Which Data type much suits for the note column ? let me know the advantages and disadvantage of both type when it comes to performance.

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Best Column Type To Use For Storing Text
Pretending i have 1k chars of text i want to store in a db.

What would be prefered to use.
One 'text', 10x char(100) or maybe 10x varchar(100) ?

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Size Of TEXT Data Type.
How big is the TEXT datatype by default? 0 bytes? I.e. if you declare a column to be of type TEXT but do not populate that column in a given row, will it then occupy 0 bytes of memory in that row? (if it defaults to NULL).

For that matter, will any column occupy 0 bytes of memory in any given row in which that column is not populated and where that column default to NULL?

(I am thinking in terms of C/C++ where a pointer does not point to anything unless memory is explicitly allocated and referenced to it).

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Insert Text File In A Text Field
2 questions:

1) How can I insert a text file into a TEXT field (of a table)
by a mysql instruction ?;

2) How can I insert a microsoft word file into a BLOB field (of a table)
by a mysql instruction?

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Data Type :: Difference Between The TEXT And BLOB
if i want to using TEXT and BLOB datatype, which is the best to use? and what the differentiate to use? benefit to use?

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TEXT Column Type Storage Capability
I know that a MySQL column type TEXT holds L+2 bytes, where L < 2^16 from the maunal. and 2^16 = 65536 bytes. But how many text characters would that work out to be?

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Text, Ntext, Or Image Data Type
I have you use the DISTINCT in my sql select statement.
here is what I did:

Set RS=Condata.Execute("SELECT DISTINCT course,title,Name,CRhr,inst_type,COU_DESC,long_desc FROM schedule WHERE subj='" & tsubj & "' ORDER BY course,title")

I got the error: Microsoft OLE DB Provider for SQL Server (0x80040E14)
The text, ntext, or image data type cannot be selected as DISTINCT.
There is a field, Cou_Desc, uses Ntext datatype. If I change this field to Varchar then asp app works fine. The problem that if I change this field datatype, then something else will not work.The question is: Is there a way to make the sql statement works without changing the field datatype?

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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.

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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?

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Field Doesn't Have A Default Value
i m trying to get started with mysql but i m getting error on mysql console when i insert into coloumn like i m insterting data into title col which has type text but when i hit enter after query i get this error
Field 'pdate' doesn't have a default value

to my knowledge isnt default value is type ? coz pdate is date type

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MYSQL VARCHAR(5000) Vs.TEXT Data Type
I notices that the MYSQL folks define a varchar as being able to only store up to 255 characters. Obviously there must have been a change because I was able to create a Varchar(5000) data type and store information in it.

Can someone verify that the varchar data type was altered and what are the performance impact of using a Varchar(5000) vs. a TEXT dataype. my assumption is that using this Varchar(5000) datatype would be more efficient but you never know...

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Any Issues With Changing Data Type From Blob To Text?
If I alter a column's data type from blob to text, will the data be okay? or will it change somehow? Currently the column is of type blob and all the data in this column is text.

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Default Field Values
I am trying to devise a procedure to delete rows wherein all the fields have
been set to their default values (either null, or in the case of a not null
default value for a row, that default value). Is there a means in MySQL
which allows me to obtain what the defaults are for all fields in a table?

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Set Default Value For Datetime Field
How can I set a datetime field to have a default value of the time the record is inserted?

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Default Value For DATETIME Field
I am trying to install a WordPress blog and the install script is failing as several of the tables contain a declaration like:

Code:

my_field datetime NOT NULL default '0000-00-00 00:00:00'

I am getting the message "Invalid default value for 'my_field'". Is there is a setting I can change to allow for this declaration, bad as it may be?

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Default Value For A Date Field
I am trying to create a column inside a preexisting table. The column has a type of date. Is there a way to set the default value to now() or curdate()? In MSSQL the default value would be 'getdate()', but when i try to use the MySQL varient an error returns saying this is an invalid default value.

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Now() In Default Value Of Date Field
I have been using the MySQL Administrator in order to create tables and have been unable to set the default value of any date fields to the current date by using the Now() function. When I attempt to do so, I receive the error message: MySQL error number 1067.

Has anyone experienced this problem? If so, how do I set the default property of a date field to the current date?

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Revert Field Value To Default
I wish to have an option for users to revert their settings to their default values, which will be the default values of the database columns.

Is it possible to set the field values to their default without explicitly stating that value in the query. I want to reset all values in the row except for a select few that contain vital information for administration purposes.

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Datetime Field Default Now() Fails
I have a mySQL database table with a column field datatype of datetime that I set up in the original create table statement like this:

create table nnet_usermetadata (
....
nnet_record_entered datetime default 'now()'
)

However, upon execution, each time a record is entered into nnet_usermetadata the results are:

00-00-0000 00:00:00

Is there a way I can always ensure that the current date and time are always entered into the datetime field?

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Setting DEFAULT Value After Creation Of Field
I've been searching all over w3schools to no avail.

I have a column whos domain is varchar(6). I want to set the default value to 'active'. I already have a whole lot of values in there. Some are 'active', some are 'closed'. I just figured it would be nice to have a default value in case someone added an entity and didn't specify this particular field.

So, how do I set the default value for a column after I've already created and populated the dbase?
And are there any better resources on the web than w3schools?

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Update All Instances Of A Field To Default Value
Is there a statement or way in MySQL to update a several fields in a database to the default value? Basically reseting the value with out deleting it.

I can go through an manually do that by looking at the number and manually setting it to that but it would be easier to just say:

Update table set field=default

That didn't work but that's what I'm trying to do.

While at it is there any easy way to do it with PHPMYADMIN which is what I manage my DB's with.

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Not Able Give Default Value For DATE Field
I would like to specify a default value for "DATE" datatype as a system
date. But i could find from the help tutorial, "default value cannot be
added for a DATE datatype". But i could specify in Oracle. I have found
below statment from the help documents.

"The DEFAULT value clause in a data type specification indicates a default
value for a column. With one exception, the default value must be a
constant; it cannot be a function or an expression. This means, for
example, that you cannot set the default for a date column to be the value
of a function such as NOW() or CURRENT_DATE. The exception is that you can
specify CURRENT_TIMESTAMP as the default for a TIMESTAMP column."

Why cant we use a functions or variable values in date? Is this the
limitation or didnot explore this functionality yet?
Is this limitation applicable for only DATE type or any other datatypes?

I have such a situation to use this "default" feature for a date column
with value as system date.

is there a way to do that?

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Orderby A Text Field As It Were An Integer Field
Is it possible to construct a query so that the orderby 'field' returns the rows as though the 'field' were an integer field, even though it is a text field? I do not want e.g. 10 to be before 2.

The field in question is called 'lagerantal' and is of type 'text'

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Field Type
i create a table:
mysql>create table a(a float);
mysql>insert into a values('39923.56');
mysql> select * from a;
+---------+
| a |
+---------+
| 39923.6 |
+---------+
1 row in set (0.00 sec)
//////////////////////////////
i do not want the round result!
i want get the values like *.??
i do not want use the DECIMAL(5,2) because it can not caculated by the cpu.
one way maybe i can use bigint then /100 get the float num!
any other ways?

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Type Field
At this moment I have a field with the type DATE using by default 0000-00-00. I want modify to correspond to the next example: 2006-06-06 15:30 PM. Can I register in the same field or I want to separate by other fields?

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What Field Type
I'm using a credit system in my database

what is the best field type to use for numbers which will have values added and deducted.

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General Error: Field 'event_date_time' Doesn't Have A Default Value
im posting the code of my page and i want to submit a date and time in my database for now eveyrthing is working but when i try to submit it it shows me this error and i really donr know why: (if someone can help me i will be very thankfull!!!)

The web site you are accessing has experienced an unexpected error.
Please contact the website administrator.

The following information is meant for the website developer for debugging purposes.
Error Occurred While Processing Request
Error Executing Database Query.
General error: Out of range value adjusted for column 'type' at row 1

The error occurred in C:CFusionMX7wwwrootexamplesdatetimeprompt.cfm: line 18

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TIME Field Type
Within PHP I have the time data of 01:32 or 1:32 - this refers to a mm:ss / m:ss format. My MySQL Field type is a TIME field - I require it to be a time format so I can perform functions upon the row. The time format is 00:00:00 (hh:mm:ss) - is there any way of having the field correspond with my format, or is there a way of converting it upon entry. If not it means I'll have to use string functions in PHP to convert the data into the neccessary format - which frankly is a pain the ***. Then again, I'm confident there's a solution available in MySQL, and I'm uber-confident that you guys will be the people to ask too.

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Year Field Type
My question is, how do I prevent default data being entered into this field when I don't want to enter a year for the given row?

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Speed Vs Field Type/value
I have an integer field in a table or view, and that field is used in the WHERE clause of a SELECT statement. Will the query take longer if the field values are in the upper range of the max vs. the lower range ( 200000000 vs 1, 2, 3), or is a 32 bit integer queried at the same speed regardless of the value?

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