alter table `quote`
modify column `timestamp`
DEFAULT CURRENT_TIMESTAMP
ON UPDATE CURRENT_TIMESTAMP
NOT NULL
What's wrong with the above mysql query?
I am trying to change my timestamp column to default and update with the current timestamp.
#1064 - 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 'DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP NOT NULL' at line 1
After MODIFY COLUMN col_name the syntax requires a column_definition which in turn requires a type. Add the current type of this column (e.g. DATETIME) before DEFAULT to resolve the syntax error.
This is not so much an answer as it is a tip. In MySQL workbench 6.3 community build, if you want to modify the column using the table edit screen, make certain the "Data Type:" for your timestamp column is for sure set to TIMESTAMP and then make ON UPDATE CURRENT_TIMESTAMP the default value (on my screen, it is just below the "Data Type:").
Related
SQL Statement:
ALTER TABLE `Trade`.`details`
ADD COLUMN `datetime` TIMESTAMP(3) NOT NULL DEFAULT TIMESTAMP(3) AFTER `Result`
ERROR 1064: 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 '(3) AFTER Result' at line 2
i am new to mysql any help.Please
timestamp doesn't need length, also you are defining a default value but provided a datetype instead !!
here is what I mean
ALTER TABLE `Trade`.`details`
ADD COLUMN `datetime` TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP AFTER `Result`
I'm building registration form for my teacher's website.
I have created database called "students" with various rows like "name, surname etc."
Now I would like to add a column named "date_submitted" which will automatically insert current date and time to the row when data is submitted.
For example a student submits his data, the data is inserted into the table and mysql automatically fills the date and time when this insertion occured.
I tried #MLBDG answer from this question MySQL date column auto fill with current date but it doesn't work.
This is the way I do it:
Query:
ALTER TABLE `students` ADD `date_submitted` TIMESTAMP on update CURRENT_TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP AFTER ;
The error I'm receiving:
#1064 - 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 1
Server version: 5.5.34 - MySQL Community Server (GPL)
Remove AFTER keyword at the end of your query:
ALTER TABLE `students` ADD `date_submitted` TIMESTAMP on update CURRENT_TIMESTAMP
NOT NULL DEFAULT CURRENT_TIMESTAMP;
Syntax: ALTER TABLE
If using the AFTER keyword in your ALTER TABLE query, it must be followed by the name of a field in the table you are modifying.
Remove After Keyword at the end of your query
ALTER TABLEstudentsADDdate_submittedTIMESTAMP on update CURRENT_TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP;
ALTER TABLE `mysystem`.`projects`
MODIFY COLUMN `project_capture_date` DATE NOT NULL DEFAULT CURRENT_DATE();
gives:
Error Code: 1064. 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 'CURRENT_DATE()'
at line 2
Current row definition:
project_capture_date, date, NO, , 0000-00-00
Just recently changed the engine to InnoDB from MyISAM.
As per the mysql document
http://dev.mysql.com/doc/refman/5.0/en/data-type-defaults.html
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
To solve this you may need to define the datatype as TIMESTAMP column with DEFAULT CURRENT_TIMESTAMP
DEMO
If you do not want TIMESTAMP then you have do while inserting by setting the column value as Now()
I'm trying to change the existing column "time_sent" to default to the time during insertion. My SQL is:
ALTER TABLE `email_history` alter `time_sent` set DEFAULT CURRENT_TIMESTAMP
I'm getting this error though:
MySQL said:
#1064 - 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 'CURRENT_TIMESTAMP' at line 1
I've read the documentation and other (similar, but not identical) examples, and no luck.
My version of MySQL is 5.0.67 I believe.
It should be ..
ALTER TABLE 'table' MODIFY collumn_1 TIMESTAMP DEFAULT CURRENT_TIMESTAMP;
I'm using MySQL (nobody's perfect), version 4.1 and I'm used to define some timestamp columns like that:
ALTER TABLE foo ADD creation TIMESTAMP DEFAULT NOW() ;
I'd like to do exactly the same thing, but for a DATE field. The reason being I don't need a TIMESTAMP precision and since no functional index exists in MySQL, I cannot access quickly to the rows with a given date (regardless of time of day). So I tried the following but it just does not work:
ALTER TABLE foo ADD creation_date DATE DEFAULT CURDATE() ;
ERROR 1067 (42000): Invalid default value for 'creation_date'
Or even
ALTER TABLE foo ADD creation_date DATE DEFAULT DATE(NOW()) ;
ERROR 1064 (42000): 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 '(now())' at line 1
Which does not work either.
Any Ideas?
In MySQL default values have to be constant.
Functions or expressions are not allowed.
The exception ist the TIMESTAMP type, for which CURRENT_TIMESTAMP is a valid non constant default value.
See 4.1 manual: Data Type Default Values