use the mysql equivalent of array_to_string, #32548

[freeside.git] / FS / FS / Record.pm

diff --git a/FS/FS/Record.pm b/FS/FS/Record.pm
index 3e50b11..4623766 100644 (file)
--- a/FS/FS/Record.pm
+++ b/FS/FS/Record.pm
@@ -38,7 +38,8 @@ use Tie::IxHash;
 #export dbdef for now... everything else expects to find it here
 @EXPORT_OK = qw(
   dbh fields hfields qsearch qsearchs dbdef jsearch
-  str2time_sql str2time_sql_closing regexp_sql not_regexp_sql concat_sql
+  str2time_sql str2time_sql_closing regexp_sql not_regexp_sql
+  concat_sql group_concat_sql
   midnight_sql
 );
 
@@ -2487,8 +2488,8 @@ sub ut_alpha_lower {
 Check/untaint phone numbers.  May be null.  If there is an error, returns
 the error, otherwise returns false.
 
-Takes an optional two-letter ISO country code; without it or with unsupported
-countries, ut_phonen simply calls ut_alphan.
+Takes an optional two-letter ISO 3166-1 alpha-2 country code; without
+it or with unsupported countries, ut_phonen simply calls ut_alphan.
 
 =cut
 
@@ -3414,6 +3415,24 @@ sub concat_sql {
 
 }
 
+=item group_concat_sql COLUMN, DELIMITER
+
+Returns an SQL expression to concatenate an aggregate column, using 
+GROUP_CONCAT() for mysql and array_to_string() and array_agg() for Pg.
+
+=cut
+
+sub group_concat_sql {
+  my ($col, $delim) = @_;
+  $delim = dbh->quote($delim);
+  if ( driver_name() =~ /^mysql/i ) {
+    # DISTINCT(foo) is valid as $col
+    return "GROUP_CONCAT($col SEPARATOR $delim)";
+  } else {
+    return "array_to_string(array_agg($col), $delim)";
+  }
+}
+
 =item midnight_sql DATE
 
 Returns an SQL expression to convert DATE (a unix timestamp) to midnight