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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LEARN ABOUT LINUX

alter_trigger

ALTER 
TRIGGER(7)						   SQL Commands 						  ALTER TRIGGER(7)

NAME

       ALTER TRIGGER - change the definition of a trigger

SYNOPSIS

       ALTER TRIGGER name ON table RENAME TO newname

DESCRIPTION

       ALTER TRIGGER changes properties of an existing trigger. The RENAME clause changes the name of the given trigger without otherwise changing
       the trigger definition.

       You must own the table on which the trigger acts to be allowed to change its properties.

PARAMETERS

       name   The name of an existing trigger to alter.

       table  The name of the table on which this trigger acts.

       newname
	      The new name for the trigger.

NOTES

       The ability to temporarily enable or disable a trigger is provided by ALTER TABLE [alter_table(7)], not by  ALTER  TRIGGER,  because  ALTER
       TRIGGER has no convenient way to express the option of enabling or disabling all of a table's triggers at once.

EXAMPLES

       To rename an existing trigger:

       ALTER TRIGGER emp_stamp ON emp RENAME TO emp_track_chgs;

COMPATIBILITY

       ALTER TRIGGER is a PostgreSQL extension of the SQL standard.

SEE ALSO

       ALTER TABLE [alter_table(7)]

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

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