I've the following structure in MySQL 5.6.19.
CREATE TABLE `metadata` (
`md5` char(32) NOT NULL,
`match` enum('none','md5','similarity') DEFAULT NULL
)
And I got an error doing a query like this:
select * from metadata where match = 'md5';
The error is:
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 '= 'md5'' at line 1
There're multiple entries in the table and rows that could match the query. But MySQL refuse to do it. Any idea about the reason?
Thanks!
MATCH is reserved keyword in MySQL: http://dev.mysql.com/doc/mysqld-version-reference/en/mysqld-version-reference-reservedwords-5-5.html. You should enclose your field name in backticks to make it work:
select * from metadata where `match` = 'md5';
Related
I basically want to select all columns of my MySQL table, but want to change the datatype of only one column namely Patient_Number using CAST function only. Here is a screenshot of my MySQL table
So as my output, I want a similar table as I have shown in the screenshot, just want to have the datatype of Patient_Number from INT to VARCHAR.
I tried executing the following queries:
select * cast(Patient_Number as varchar) from clinic_data;
select * from clinic_data cast(Patient_Number as varchar);
But only got the following error message:
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 'cast(Patient_Number as char)' at line 1
SELECT * is basically not a good idea
But you need a comma, between both statements
And it should be char for the cast
select *, cast(Patient_Number as char) from clinic_data;
db<>fiddle here
Im trying to update a longtext type field called 'comment' using a simple sql query in mysql client like this :
Update mytable set comment='Test' where id = 1;
But i'm getting this error
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 'comment='Test' where id = 1' at line 1
Am i missing something ?, thanks in advance.
comment is a reserved word, if you want to have a table/field with that name, you have to quote it (or use the table.fieldname syntax, in case of a field). default in mysql is the backtick for that, so:
update mytable set `comment`='Test' where id = 1;
Found it, it gets solved with this:
update mytable as a set a.comment='Test' where id = 1;
I got MySQL syntax Error 1064 while I am add new column.
ALTER TABLE `customerdetails` ADD `mobile` DOUBLE(12) NOT NULL ;
where customerdetails is the name of the table.
The Error message is " #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 ') NOT NULL' at line 1
Can somebody help me to solve this problem?
When you are defining column type as DOUBLE you have to define how many decimal places it will use
ALTER TABLE customerdetails ADD mobile DOUBLE(12,2) NOT NULL ;
Also first number (Characteristic) needs to be bigger than second number (Mantissa)
I am having trouble with something like this:
UPDATE `database` SET `col1` = 0 WHERE `col2` in (1,2,3,4);
Following is an actual failed query.
Error Message:
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 '#cc3.biz, sales#allservico.com)' at line 1
SQL:
UPDATE `CubeCart_customer` SET `optIn1st` = 0 WHERE `email` in (markscarts#cc3.biz, sales#allservico.com);
I have searched the web, and here, and tried several variations in my code to produce the query, but I just can't pinpoint where I'm failing.
Any light on this matter would be greatly appreciated.
You need quotes around your string values
UPDATE CubeCart_customer
SET optIn1st = 0
WHERE email in ('markscarts#cc3.biz', 'sales#allservico.com');
I have a script that is generating queries like this one by grabbing categories and keywords from the database. However something is wrong with the syntax it seems. here is the code first:
UPDATE `mrhowtos_main`.`eng-jap` SET `category` = 'travel' WHERE `eng` REGEXP 'abroad|country|sight seeing|foreign|plane|train|bus' and where `category` REGEXP 'misc|none';
and here is the error returned by mySQL:
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 'where category REGEXP 'misc|none'' at line 1
I have looked at it for a long time and still dont seem to see what is wrong with it. im certain the error is not in the table or column names in the DB.
The second where shouldn't be there. Try:
UPDATE `mrhowtos_main`.`eng-jap` SET `category` = 'travel' WHERE `eng` REGEXP 'abroad|country|sight seeing|foreign|plane|train|bus' and `category` REGEXP 'misc|none';