How do I enter a value in every record in a column of a table?

Question

I have the table 'category' and a column 'id', and this column has more than 100 records.

How do I add a value to all these records? In case the value would be '3'.

Answer 1

Whereas the field you want to update is called campo:

UPDATE categoria
SET campo = 3

Answer 2

update categoria set coluna='3' where coluna != '3'

I imagine it’s something like that. This only works on the console or if vc disable mysql security, because it does not leave security

Answer 3

An instruction of the kind UPDATE - when you have records in the table and want to update them - it is done as follows through the Mysql:

UPDATE nome_tabela SET campo = valor

• The instruction UPDATE updates columns of existing rows in the table with names with new values.
• The clause SET indicates which columns to modify and the values to be provided.

In your case, to update the value of all records you simply remove the clause WHERE - used to filter/restrict some records - and then just do a query similar to that:

UPDATE categoria SET campo = 3

Answer 4

Mysql Instruction:

UPDATE Categoria
SET Campo = 3

This causes all values in the "Field" column to be changed to "3". If there is a need to do this for specific lines, the use of a conditional (WHERE).

Hug.