SQL - how to alter info of a cell in table Post: 302966956

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Special Forums UNIX and Linux Applications SQL - how to alter info of a cell in table Post 302966956 by baris35 on Thursday 18th of February 2016 08:48:20 AM

02-18-2016

Registered User

SQL - how to alter info of a cell in table

Hello,
I am newbie on mysql and trying to edit my database from terminal under linux.
What I need to do is to change the information written in a cell in table.
Let me explain what I tried:

Code:

$ mysql -u mysqluser -p
$ show databases;
$ USE catalogue;
$ show tables ;
$ select * from phonebook;

it shows something like this:

+-------------+------------+--------+
| id | friend_name | age |
+-------------+------------+--------+
| 1 | Jaxier | 18 |
| 2 | Johanna | 26 |
| 3 | Johny | 25 |
| 4 | Lacatus | 18 |
| 5 | Julia | 25 |
+-------------+------------+---------+

What I want to do is to set age of Lacatus from 18 to 58

I tried below commands:

1)

Code:

$ update phonebook set id 4 SET age 58;

gives syntax error.

2)

Code:

$  ALTER phonebook ALTER id ALTER 4 SET age 58;

I 'd appreciate if you could explain what I should run in terminal

Thanks in advance
Boris

baris35

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alter_type

ALTER 
TYPE(7)							   SQL Commands 						     ALTER TYPE(7)

NAME

       ALTER TYPE - change the definition of a type

SYNOPSIS

       ALTER TYPE name RENAME TO new_name
       ALTER TYPE name OWNER TO new_owner
       ALTER TYPE name SET SCHEMA new_schema

DESCRIPTION

       ALTER TYPE changes the definition of an existing type.

       You  must own the type to use ALTER TYPE.  To change the schema of a type, you must also have CREATE privilege on the new schema.  To alter
       the owner, you must also be a direct or indirect member of the new owning role, and that role must have	CREATE	privilege  on  the  type's
       schema.	(These restrictions enforce that altering the owner doesn't do anything you couldn't do by dropping and recreating the type.  How-
       ever, a superuser can alter ownership of any type anyway.)

PARAMETERS

       name   The name (possibly schema-qualified) of an existing type to alter.

       new_name
	      The new name for the type.

       new_owner
	      The user name of the new owner of the type.

       new_schema
	      The new schema for the type.

EXAMPLES

       To rename a data type:

       ALTER TYPE electronic_mail RENAME TO email;

       To change the owner of the type email to joe:

       ALTER TYPE email OWNER TO joe;

       To change the schema of the type email to customers:

       ALTER TYPE email SET SCHEMA customers;

COMPATIBILITY

       There is no ALTER TYPE statement in the SQL standard.

SQL - Language Statements					    2010-05-14							     ALTER TYPE(7)

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