Exactly what data does pspg receive from psql?
velle opened this issue · comments
Consider the following command:
$ psql -c "SELECT * FROM foo"
gid | id | geom
-----+----+----------------------------------------------------------------------------------------------------------------------------------------------------
1 | 1 | 01020000000400000000000000000024400000000000000000000000000000244000000000000049400000000000003440000000000000494000000000000034400000000000000000
2 | 2 | 0102000000040000000000000000003E4000000000000000000000000000003E4000000000008051400000000000004940000000000080514000000000000049400000000000000000
(2 rows)
I can use pspg in two ways
$ psql -c "SELECT * FROM cubetown.LS_c" | pspg
$ PAGER=pspg psql -c "SELECT * FROM cubetown.LS_c"
Are they equivalent?
In both cases, does pgsg simply receive the output as a ascii-formatted table (using vertical pipe symbol, spaces and newlines)? Or does pspg receive the data in another format? Does the data received by pgps contain data (in addition to what I can see when printed directly to terminal), eg metadata such as datatype for each column that could hint how to format the data in the most user-friendly way?
I am asking about this in order to figure out, if I can customize pspg to do what I am trying to achieve :)
Sincerely