Escaping regular expressions in plperl
How should one escape regular expressions in plperl?
In the following chunk of PlPerl code the date doesn't match the regex:
my $endby = '2009-06-13';
my $t = spi_exec_query(qq|SELECT CASE WHEN '$endby' ~ E'.*\\d\\d\\d\\d
\\-\\d\\d?\\-\\d\\d?.*'
THEN '$endby'::timestamptz ELSE CURRENT_DATE::timestamptz END AS
test|);
die "$t->{rows}[0]{test}";
However, when I run the following query using PgAdmin, the date DOES
match the regex.
SELECT CASE WHEN '$endby' ~ E'.*\\d\\d\\d\\d\\-\\d\\d?\\-\\d\\d?.*'
THEN '$endby'::timestamptz ELSE CURRENT_DATE::timestamptz END AS
test
Toomas Vendelin <pg@vendelin.com> writes:
In the following chunk of PlPerl code the date doesn't match the regex:
my $endby = '2009-06-13';
my $t = spi_exec_query(qq|SELECT CASE WHEN '$endby' ~ E'.*\\d\\d\\d\\d
\\-\\d\\d?\\-\\d\\d?.*'
THEN '$endby'::timestamptz ELSE CURRENT_DATE::timestamptz END AS
test|);
Backslash is an active escape character in qq constants, no? You'd need
to double all those backslashes, or choose a different quoting method
for the query. (And I hope this is all encased in dollar quoting for
the function body...)
regards, tom lane