Is it possible to insert columns into a MySQL table??
I've created a table and named it "my_table" - I do not understand, why MySQL does not eats my syntax...
INSERT INTO "my_table"(
"item" char(1) NOT NULL DEFAULT '',
"price" int(10) NOT NULL DEFAULT '3000',
"level" int(10) NOT NULL DEFAULT '1000',
"super" char(1) NOT NULL DEFAULT '',
"play" char(1) NOT NULL DEFAULT ''
)
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 '"my_table"( "item" char(1) NOT NULL DEFAULT '', "price" i' at line 1
So what's wrong with my syntax ?
If you're trying to add columns to an already created table you must use ALTER.
ALTER TABLE my_table ADD item char(1) NOT NULL DEFAULT '';
http://dev.mysql.com/doc/refman/5.1/en/alter-table.html
http://www.techiecorner.com/560/mysql-how-to-add-column-to-existing-table/
As the documentation says quite clearly, INSERT is for inserting rows of data, not altering the schema.
Look at ALTER instead.
And table/field names are delimited with backticks, not quotation marks.
Related
I am not able to find out what is the exact issue. When I remove index param from below mentioned query and try to insert the data it works fine, but trying to add index cause an error.
Here is my table schema:
CREATE TABLE IF NOT EXISTS `address_list` (
`email` varchar(100) NOT NULL,
`currency_name` varchar(50) NOT NULL,
`address` varchar(50) NOT NULL,
`label` varchar(100) NOT NULL,
`index` int DEFAULT 0,
`address_type` varchar(50) NOT NULL,
`balance` varchar(500) DEFAULT "0.0",
`timestamp` TIMESTAMP default CURRENT_TIMESTAMP
)
and here is my insert query :
insert into address_list (email,currency_name,address,label,index,address_type) Values ('abc#gmail.com','bitcoin','mgbtUQt7ppCEhxWmvicxrbEDYSom5kNk8X','test address',3,'wallet');
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 'index) Values ('abc#gmail.com','bitcoin','mgbtUQt7ppCEhxWmvicxrbEDYSom5kNk8X'' at line 1
index is a reserved word in mysql; rename your column to something else, or else place it in backticks where you want to use it:
insert into address_list (email,currency_name,address,label,`index`,address_type) Values ('abc#gmail.com','bitcoin','mgbtUQt7ppCEhxWmvicxrbEDYSom5kNk8X','test address',3,'wallet');
See https://dev.mysql.com/doc/refman/8.0/en/keywords.html
I'm toying around with MySQL Workbench, using its tools to create my database. When attempting to forward engineer the database, I keep getting this error.
Executing SQL script in server
ERROR: 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 '-01-01,
`PlateNum` CHAR(7) NOT NULL DEFAULT 'ABCDEFG',
`CellPhone` INT(10) U' at line 9
SQL Code:
-- -----------------------------------------------------
-- Table `MetalDelivery`.`Drivers`
-- -----------------------------------------------------
CREATE TABLE IF NOT EXISTS `MetalDelivery`.`Drivers` (
`DriverID` INT NOT NULL AUTO_INCREMENT,
`FName` CHAR(12) NOT NULL DEFAULT 'First',
`LName` CHAR(12) NOT NULL DEFAULT 'Last',
`Sex` CHAR(1) NOT NULL DEFAULT 'M',
`DOB` DATE NOT NULL DEFAULT 1900-01-01,
`PlateNum` CHAR(7) NOT NULL DEFAULT 'ABCDEFG',
`CellPhone` INT(10) UNSIGNED NOT NULL DEFAULT 5550000000,
PRIMARY KEY (`DriverID`))
ENGINE = InnoDB
SQL script execution finished: statements: 6 succeeded, 1 failed
In the SQL script preview, it does show a semicolon after InnoDB
Any kind of date needs to be specified as if a string:
`DOB` DATE NOT NULL DEFAULT '1900-01-01'
It's also worth expanding this schema a little. Names are frequently over 12 letters long. VARCHAR(255) is a good default for "string" fields.
You may find that these defaults are a huge mistake. It's possible someone's actual last name is "Last" in which case it's like they're using a default, or they simply don't have a last name. NULL values serve a purpose, so embrace them.
everyone! I'm newbie to MySQL. I've created a new model using Workbench tools(I mean, that I haven't written any string of code by myself).
When trying to forward engineer it I get:
Executing SQL script in server
ERROR: 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 'COMMENT '')
ENGINE = InnoDB' at line 8
SQL Code:
-- -----------------------------------------------------
-- Table `university`.`CITY`
-- -----------------------------------------------------
CREATE TABLE IF NOT EXISTS `university`.`CITY` (
`ID_CITY` INT NOT NULL COMMENT '',
`CNAME` TEXT(15) NULL COMMENT '',
`POPULATION` INT NULL COMMENT '',
PRIMARY KEY (`ID_CITY`) COMMENT '')
ENGINE = InnoDB
SQL script execution finished: statements: 5 succeeded, 1 failed
Fetching back view definitions in final form.
Nothing to fetch
Moreover, when trying to forward engineer default Workbench model "sakila_full" i get the same thing:
Executing SQL script in server
ERROR: 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 'COMMENT '',
INDEX `idx_actor_last_name` (`last_name` ASC) COMMENT '')
ENGINE ' at line 9
SQL Code:
-- -----------------------------------------------------
-- Table `sakila`.`actor`
-- -----------------------------------------------------
CREATE TABLE IF NOT EXISTS `sakila`.`actor` (
`actor_id` SMALLINT UNSIGNED NOT NULL AUTO_INCREMENT COMMENT '',
`first_name` VARCHAR(45) NOT NULL COMMENT '',
`last_name` VARCHAR(45) NOT NULL COMMENT '',
`last_update` TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP COMMENT '',
PRIMARY KEY (`actor_id`) COMMENT '',
INDEX `idx_actor_last_name` (`last_name` ASC) COMMENT '')
ENGINE = InnoDB
DEFAULT CHARACTER SET = utf8
SQL script execution finished: statements: 5 succeeded, 1 failed
Fetching back view definitions in final form.
Could not get definition for sakila.customer_list from server
Could not get definition for sakila.film_list from server
Could not get definition for sakila.nicer_but_slower_film_list from server
Could not get definition for sakila.staff_list from server
Could not get definition for sakila.sales_by_store from server
Could not get definition for sakila.sales_by_film_category from server
Could not get definition for sakila.actor_info from server
7 views were read back.
Thanks in advance!
Well, the BIG probleme is that Mysql Workbench adds itself indexes comments that generate an error, when using "Forward Engineer" or "Synchronize Model"
This problem did not exist when I was using version 6.0.
It looks like you've taken the COMMENT strings a little too far. According to the MySQL CREATE TABLE syntax, a COMMENT attribute is only permitted on a column definition. That means it's invalid on the INDEX or PRIMARY KEY definitions you have listed near the end of your CREATE statements.
The COMMENT '' aren't necessary and can be omitted entirely, especially since you are leaving them blank. Otherwise, they would be used for a little bit of extra human-readable metadata on your column definitions.
To get this working with what you have, remove the COMMENT attributes from your index and primary key definitions.
CREATE TABLE IF NOT EXISTS `university`.`CITY` (
`ID_CITY` INT NOT NULL COMMENT '',
`CNAME` TEXT(15) NULL COMMENT '',
`POPULATION` INT NULL COMMENT '',
-- No COMMENT on PK
PRIMARY KEY (`ID_CITY`)
) ENGINE = InnoDB;
CREATE TABLE IF NOT EXISTS `sakila`.`actor` (
`actor_id` SMALLINT UNSIGNED NOT NULL AUTO_INCREMENT COMMENT '',
`first_name` VARCHAR(45) NOT NULL COMMENT '',
`last_name` VARCHAR(45) NOT NULL COMMENT '',
`last_update` TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP COMMENT '',
-- No COMMENT on PK or INDEX
PRIMARY KEY (`actor_id`),
INDEX `idx_actor_last_name` (`last_name` ASC)
) ENGINE = InnoDB
DEFAULT CHARACTER SET = utf8;
Or the whole thing without any blank COMMENTs:
CREATE TABLE IF NOT EXISTS `university`.`CITY` (
`ID_CITY` INT NOT NULL COMMENT 'A comment that is not blank!',
`CNAME` TEXT(15) NULL,
`POPULATION` INT NULL,
PRIMARY KEY (`ID_CITY`)
) ENGINE = InnoDB;
(Same for the other table)
MySQL is generally quite good at pointing you directly to the source of your syntax error with the error message:
check the manual that corresponds to your MySQL server version for the right syntax to use near 'COMMENT ''),
With the exception of errors occurring at the end of the statement, which get a little ambiguous, the right syntax to use near will show you exactly what's amiss. In the above case, the COMMENT '') should direct you to the only COMMENT attribute followed by a ), which was the one at PRIMARY KEY. From there, check the manual (linked above) for legal syntax in each segment of your statement.
Remove "VISIBLE" and "INVISIBLE" words from all INDEX
I am trying to alter a table and set a default value for a nullable column. But i get the following error.
Here is the command:
ALTER TABLE `questiontboard`.`questions`
CHANGE COLUMN `status` `status` (11) NULL DEFAULT 1 ;
Here is the error:
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 '(11) NULL DEFAULT 1' at line 2
SQL Statement:
ALTER TABLE `questionboard`.`questions`
CHANGE COLUMN `status` `status` (11) NULL DEFAULT 1
ERROR: Error when running failback script. Details follow.
ERROR 1050: Table 'question' already exists
What am i doing wrong?
You forgot the data type. Did you mean
ALTER TABLE `questiontboard`.`questions`
CHANGE COLUMN `status` `status` INT(11) NULL DEFAULT 1 ;
^^^
Your query should be this:
ALTER TABLE `questiontboard`.`questions`
CHANGE COLUMN `status` `status` int(11) NULL DEFAULT 1 ;
^^ here add int as you want the datatype
You are missing datatype of field in the query.
I got the same error when altering a table. I did the exact same thing you did (minus the code typo).
I got the error when altering a column from a SMALLINT to a varchar(n). It gives the "1050 Table already exists..." error. The error was confusing. Of course the table exists, that's why I'm trying to alter it!
In the end, I found out that the problem was that my new varchar(2) was not big enough to hold all the original smallint data. I had one row that had a 4 digit number, so varchar(2) wouldn't work. I changed it to use varchar(4), and it worked.
ALTER TABLE omiccom_wp.myTable
CHANGE COLUMN myColumn myColumn VARCHAR(2) NOT NULL DEFAULT '0' ;
I have to add a column whose default value is not null by default to the table after particular column using Alter table.
ALTER TABLE tblechecklistrevision ADD COLUMN IWorkFlowOrder INT(10) DEFAULT NOT NULL AFTER fState;
When I Execute the query I will get the below error
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 AFTER fState' at line 1
You should remove DEFAULT:
ALTER TABLE tblechecklistrevision
ADD COLUMN IWorkFlowOrder INT(10) NOT NULL AFTER fState;
DEFAULT is for setting initial value to new rows where a value for that column isn't specified, when you write ...INT(10) NOT NULL what you mean is actually that that column can never contain a NULL, not only at initialization time.
If you want the default value not to equal NULL (example 0) you can do:
ALTER TABLE tblechecklistrevision
ADD COLUMN IWorkFlowOrder INT(10) NOT NULL DEFAULT 0 AFTER fState