xo::db::sql::util proc foreign_key_exists (public)

 xo::db::sql::util foreign_key_exists [ -dbn dbn ] \
    -table_name table_name  -column column  -reftable reftable  \
    -refcolumn refcolumn 

Defined in packages/xotcl-core/tcl/05-db-procs.tcl

Automatically generated method

Switches:

-dbn

(optional)

-table_name

(required)

-column

(required)

-reftable

(required)

-refcolumn

(required)

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

Testcases:

No testcase defined.

Source code:

#function_args: {TABLE_NAME {}} {COLUMN {}} {REFTABLE {}} {REFCOLUMN {}}
foreach var [list TABLE_NAME COLUMN REFTABLE REFCOLUMN]  {
  set varname [string tolower $var]
  if {[info exists $varname]} {
    set $var [set $varname]
    set _$var :$var
  } else {
    set _$var null
  }
}
set sql "
select util__foreign_key_exists($_TABLE_NAME, $_COLUMN, $_REFTABLE, $_REFCOLUMN) 
    "
db_with_handle -dbn $dbn db {
  #ns_log notice "--sql=$sql"
  return [ ns_set value [ns_pg_bind 0or1row $db $sql] 0 ]
}

XQL Not present:

Generic, PostgreSQL, Oracle