xo::db::DB-postgresql instproc get_value

 <instance of xo::db::DB-postgresql> get_value

Defined in

Partial Call Graph (max 5 caller/called nodes):

Testcases:

xotcl_core_tutorial_1, xotcl-core, xotcl_core_tutorial_2, xotcl_core_tutorial_4, test_xo_db_object, test_cr_items, xowiki_test_cases, path_resolve

Source code:

if {$sql eq ""} {set sql [:get_sql $qn]}
set prepOpt [expr {[info exists prepare] ? [list -prepare $prepare] : ""}]
set answers [uplevel [list [self] exec_0or1row {*}$prepOpt -bind $bind $sql]]
if {$answers ne ""} {
  set result [ns_set value $answers 0]
  ns_set free $answers
  return $result
}
return $default

XQL Not present:

Generic, PostgreSQL, Oracle