Unable to use crosstab in Postgres

Question

Postgres 9.2.1 on OSX 10.9.2.

If I run the following crosstab example query:

CREATE EXTENSION tablefunc; 

CREATE TABLE ct(id SERIAL, rowid TEXT, attribu         


        

Answer 1

There's a misconception in your answer:

and not accessible to all schemas in it.

All schemas inside the same database are accessible to all sessions in that same database, (as long as privileges are given). It's a matter of setting the search_path. Schemas work much like directories / folders in the file system.

Alternatively, you can schema-qualify the function (and even operators) to access it independently of the search_path:

SELECT *
FROM my_extension_schema.crosstab(
    $$select rowid, attribute, "value"
      from   ct
      where  attribute IN ('att2', 'att3')
      order  by 1,2$$
   ,$$VALUES ('att2'), ('att3')$$
   ) AS ct(row_name text, category_2 text, category_3 text);

Recent related answer with more Info:
How to use % operator from the extension pg_trgm?

Dubious crosstab()

Your query returned attributes 'att2' and 'att3', but the column definition list had three categories (category_1, category_2, category_3) that do not match the query.
I removed category_1 and added the second parameter to crosstab() - the "safe" version. More details here:
PostgreSQL Crosstab Query

Aside: Don't use value as column name. Even if Postgres tolerates it. It's a reserved word in standard SQL.