Question

I want to return the unicode values from the values of a column in PostgreSQL.

Is this possible? How I do?

Example:

"Renato" : U+0022 U+0052 U+0065 U+006E U+0061 U+0074 U+006F U+0022

I want to do this because I want to discover the Unicode from some symbols and punctuations to add to a conversion regex to replace these values to others.

Answer 1

Get one Unicode code point:

SELECT ascii('ã')

Result:

227

More in the manual here. A quote:

For UTF8 returns the Unicode code point of the character.

Get Unicode code points for a string:

SELECT array_agg(t)
FROM (
       SELECT ascii(regexp_split_to_table('Conceição', '')) AS t
     ) x

Use string_agg instead if you want a text string as result. For it you have to cast the values to text.