I cannot change databases column
My Env
MacOS Mojave, MySQL Server version: 10.1.39-MariaDB Source distribution
why
Making a CRUD app, but I want to change table column,
from text to desc, so I searched and used alter
command, but right SQL command returns error messages.
My table
MariaDB [cake_cms]> describe interns;
+----------+--------------+------+-----+---------+----------------+
| Field | Type | Null | Key | Default | Extra |
+----------+--------------+------+-----+---------+----------------+
| id | int(11) | NO | PRI | NULL | auto_increment |
| email | varchar(255) | NO | | NULL | |
| name | varchar(64) | NO | | NULL | |
| text | varchar(255) | NO | | NULL | |
| location | varchar(64) | YES | | NULL | |
+----------+--------------+------+-----+---------+----------------+
MariaDB [cake_cms]> Alter Table interns Rename Column text to desc;
ERROR 1064 (42000): You have an error in your SQL syntax;
check the manual that corresponds to your MariaDB server version
for the right syntax to use near 'Column text to desc' at line 1
Refered
https://www.dbonline.jp/mysql/table/index18.html
says to use
ALTER TABLE table_name
CHANGE COLUMN old_name TO new_name;
Rename a column in MySQL
This site says:
ALTER TABLE tableName RENAME COLUMN "oldcolname" TO "newcolname" datatype(length);
So I write
alter table interns rename column "name" to "newname" varchar(255);
But returned syntax error message....
I do not know what to do. Please help me!
desc is a sql command so you can't name your table like this
There's something very very wrong with Doctrine/MySQL or I'm just completly dumb. I'm trying to execute a simple update query on Question entity:
+---------------+--------------+------+-----+---------+----------------+
| Field | Type | Null | Key | Default | Extra |
+---------------+--------------+------+-----+---------+----------------+
| id | int(11) | NO | PRI | NULL | auto_increment |
| form_id | int(11) | YES | MUL | NULL | |
| name | varchar(255) | NO | | NULL | |
| question_type | varchar(255) | NO | | NULL | |
| validation | longtext | YES | | NULL | |
| required | tinyint(1) | YES | | NULL | |
| order | int(11) | NO | | NULL | |
+---------------+--------------+------+-----+---------+----------------+
With:
public function buildForm(FormBuilderInterface $builder, array $options) {
$builder
->add('order', IntegerType::class)
->add('name', TextType::class)
->add('questionType', TextType::class)
->add('validation', TextType::class)
->add('required', CheckboxType::class)
;
}
and
...
$em->persist($question);
...
I'm getting this error:
Uncaught PHP Exception Doctrine\DBAL\Exception\SyntaxErrorException: "An exception occurred while executing 'UPDATE questions SET order = ? WHERE id = ?' with params [1, 12]
Every other field validates with no problem!
When I'm trying to run the same query in the console, this is the result:
mysql> UPDATE questions SET order=1 WHERE id=14;
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 'order=1 WHERE id=14' at line 1
When I run the same query in Workbench, everything is ok:
UPDATE `questions` SET `order`='2' WHERE `id`='7';
Finally, updating another column in this table (also integer!), like so:
update questions set form_id=5 where id=7;
Goes as expected.
What is going on?
EDIT:
To simplify, why this works:
UPDATE questions SET form_id=5 WHERE id=7;
And this doesn't:
UPDATE questions SET order=3 WHERE id=7;
order is a reserved word for Mysql
That's why it runs when (escaped with backticks)
It goes without saying that choosing another name would be safer
See this answer for more informations
I got tables like below and I am trying to INSERT data.
mysql> desc subscribers
-> ;
+---------+-------------+------+-----+---------+----------------+
| Field | Type | Null | Key | Default | Extra |
+---------+-------------+------+-----+---------+----------------+
| id | smallint(6) | NO | PRI | NULL | auto_increment |
| email | varchar(32) | NO | | NULL | |
| comment | text | NO | | NULL | |
+---------+-------------+------+-----+---------+----------------+
Data insert
INSERT INTO `subscribers` VALUES (1, ‘someone#gmail.com’, ‘thanks’);
But It gives me an 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 '#gmail.com’, ‘ thanks’)' at line 1
Does anybody see an error??
You are surrounding your strings to be inserted with some sort of apostrophe instead of a single quote. Use this instead (and copy it verbatim from this answer):
INSERT INTO `subscribers`
VALUES (1, 'someone#gmail.com', 'thanks');
Your problem is the curly single quote. But, to prevent future errors, you should always include the column list in the insert:
INSERT INTO `subscribers`(id, email, comment)
VALUES (1, 'someone#gmail.com', 'thanks');
In fact, a natural way to create the table is using an auto-incremented id. If you did then, then the INSERT would look like:
INSERT INTO `subscribers`(email, comment)
VALUES ('someone#gmail.com', 'thanks');
The id would be assigned automatically.
This is a very simple MySQL query.
INSERT INTO users_questions (user_id, question_id, mcopt_id,timestamp)
VALUES (50053, 875, 3092, '2015-08-22 18:01:44');
When I use it I get
ERROR 1054 (42S22): Unknown column 'marks' in 'field list'
marks is a column in the same table whose default value is set to NULL and in the above query I don't even use the column name marks.
So why exactly am i getting the error?
Structure of table:
+-------------+-----------+------+-----+-------------------+-------+
| Field | Type | Null | Key | Default | Extra |
+-------------+-----------+------+-----+-------------------+-------+
| user_id | int(11) | NO | PRI | NULL | |
| question_id | int(11) | NO | PRI | NULL | |
| mcopt_id | int(11) | NO | | NULL | |
| timestamp | timestamp | NO | | CURRENT_TIMESTAMP | |
| marks | int(11) | NO | | NULL | |
+-------------+-----------+------+-----+-------------------+-------+
Just to make it clear I also get the error when I provide the value of marks
INSERT INTO users_questions (user_id, question_id, mcopt_id, timestamp, marks) VALUES (50053, 875, 3094, '2015-08-22 19:15:07', 1)
`
Sometimes, when you implement wrong trigger, it happens.
So just drop your trigger by using:
DROP TRIGGER [IF EXISTS] [schema_name.]trigger_name
and it actually worked in my Mysql case. Maybe helpful for some of you.
A:
create table users_questions2
( user_id int not null,
question_id int not null,
mcopt_id int not null,
timestamp timestamp not null,
marks int not null
);
describe users_questions2;
+-------------+-----------+------+-----+-------------------+-----------------------------+
| Field | Type | Null | Key | Default | Extra |
+-------------+-----------+------+-----+-------------------+-----------------------------+
| user_id | int(11) | NO | | NULL | |
| question_id | int(11) | NO | | NULL | |
| mcopt_id | int(11) | NO | | NULL | |
| timestamp | timestamp | NO | | CURRENT_TIMESTAMP | on update CURRENT_TIMESTAMP |
| marks | int(11) | NO | | NULL | |
+-------------+-----------+------+-----+-------------------+-----------------------------+
INSERT INTO users_questions2 (user_id, question_id, mcopt_id, timestamp) VALUES (50053, 875, 3092, '2015-08-22 18:01:44');
Error Code: 1364. Field 'marks' doesn't have a default value 0.047 sec
INSERT INTO users_questions2 (user_id, question_id, mcopt_id, timestamp,marks) VALUES (50053, 875, 3092, '2015-08-22 18:01:44',1);
-- 1 row(s) affected
INSERT INTO users_questions2 (user_id, question_id, mcopt_id, timestamp,marks) VALUES (50053, 875, 3092, '2015-08-22 18:01:44',null);
Error Code: 1048. Column 'marks' cannot be null 0.000 sec
B:
drop table users_questions2;
create table users_questions2
( user_id int null,
question_id int null,
mcopt_id int null,
timestamp timestamp null,
marks int null
);
describe users_questions2;
+-------------+-----------+------+-----+---------+-------+
| Field | Type | Null | Key | Default | Extra |
+-------------+-----------+------+-----+---------+-------+
| user_id | int(11) | YES | | NULL | |
| question_id | int(11) | YES | | NULL | |
| mcopt_id | int(11) | YES | | NULL | |
| timestamp | timestamp | YES | | NULL | |
| marks | int(11) | YES | | NULL | |
+-------------+-----------+------+-----+---------+-------+
INSERT INTO users_questions2 (user_id, question_id, mcopt_id, timestamp) VALUES (50053, 875, 3092, '2015-08-22 18:01:44');
1 row(s) affected
So the only way I can get my describe table to look like yours is if they are not null columns (section A above).
Which means your columns do not accept nulls.
Edit:
show variables like "%version%";
+-------------------------+------------------------------+
| Variable_name | Value |
+-------------------------+------------------------------+
| innodb_version | 5.6.24 |
| protocol_version | 10 |
| slave_type_conversions | |
| version | 5.6.24-log |
| version_comment | MySQL Community Server (GPL) |
| version_compile_machine | x86_64 |
| version_compile_os | Win64 |
+-------------------------+------------------------------+
Column marks is defined as not nullable with default value NULL. I suppose that is the problem. You should assign a value in the insert or change default value
The table you are reference in the query does not have a column named marks. First check that you have to correct query which failed and not looking at a different query. Specially when the error message say the table doesn't have a marks column and your query doesn't even have this column written then you are looking at the wrong query. Then check the table you are using and that it has a column named marks. Your error message has nothing to do about NULL or NOT NULL.
I found a similar problem with the command:
INSERT INTO `rel_artsizeprice` (`art_id`, `artsize_id`, `price_tax`) VALUES (1, 3, 2.5);
ERROR 1054 (42S22): Unknown column ' 2.5' in 'field list'
If I delete the space before 2.5, it works:
INSERT INTO `rel_artsizeprice` (`art_id`, `artsize_id`, `price_tax`) VALUES (1, 3,2.5);
Query OK, 1 row affected (0.06 sec)
I a large list of such insert values there are only some places, which generates an error. So I think, that there is an error in the source of the commandline tool (readline or mysql).
I used:
mysql --version
mysql Ver 15.1 Distrib 10.0.26-MariaDB, for debian-linux-gnu (x86_64) using readline 5.2
The table You had created will not accept the Null value you have to define the value of marks. It cannot be null probably you have used the not null. if you want your column to be null better use simply null.
One more technical Mistake you are doing here is defining two primary keys. A table should only have one primary key it can have enormous unique keys but primary key should only be one.
You must use single quote marks before and after each record.
INSERT INTO users_questions (user_id, question_id, mcopt_id,timestamp)
VALUES ('50053', '875', '3092', '2015-08-22 18:01:44');
Ok, I'm stumped on this one:
mysql> INSERT INTO item (col1) VALUES ('testing') WHERE item_name = 'server1';
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 'WHERE item_name = 'server1'' at line 1
Here's the table desc (slightly sanitized):
mysql> desc item;
+--------------+--------------+------+-----+---------+----------------+
| Field | Type | Null | Key | Default | Extra |
+--------------+--------------+------+-----+---------+----------------+
| id | int(11) | NO | PRI | NULL | auto_increment |
| item_name | varchar(128) | YES | | | |
| active | int(11) | NO | | 0 | |
| col1 | varchar(512) | YES | | NULL | |
+--------------+--------------+------+-----+---------+----------------+
]I've tried some variations on the INSERT, but I've gotten nowhere. Look forward to someone revealing whatever obvious thing I'm missing!
Running: mysql Ver 14.12 Distrib 5.0.95, for redhat-linux-gnu (x86_64) using readline 5.1 (I know it's older, but I can't upgrade this box at the moment).
If you're looking to update an existing row, it's this:
UPDATE item
SET col1 = 'testing'
WHERE item_name = 'server1';
You're not using the INSERTstatement correctly, if you use VALUES clause you can't apply a WHERE condition on it.
Here is the same query with the appropriate syntax:
INSERT INTO item (col1)
SELECT 'testing'
FROM yourTable
WHERE item_name = 'server1';
Hope this will help you.