You can use data form the following two 4d tables without having to loop through each of your tables/fields
_USER_CONSTRAINTS and _USER_CONS_COLUMNS . You can find these defined on page 57 or so iof the v_15 sql reference manual Regards CHUCK On Thu, Jan 10, 2019 at 11:01 AM Arnaud de Montard via 4D_Tech <[email protected]> wrote: > > > > Le 8 janv. 2019 à 21:47, Chip Scheide via 4D_Tech <[email protected]> a > > écrit : > > > > given a pointer to a table, or a pointer to a field of a table, > > I want to be able, for the current record of this table, to : > > Hi Chip, > I use this for foreign keys: > > //DB_getForeignKeys (aTable_p) > $parentTable_l:=Table($1) > $FKarray_p:=$2 > CLEAR VARIABLE($FKarray_p->) > For ($table_l;1;Get last table number) > Case of > : (Not(Is table number valid($table_l))) > : ($table_l=$parentTable_l) > Else > For ($field_l;1;Get last field number($table_l)) > If (Is field number valid($table_l;$field_l)) > GET RELATION > PROPERTIES($table_l;$field_l;$destinationTable_l;$destinationField_l) > If ($parentTable_l=$destinationTable_l) > APPEND TO > ARRAY($FKarray_p->;Field($table_l;$field_l)) > End if > End if > End for > End case > End for > $0:=Size of array($FKarray_p->) > > Primary is easier, just loop through fields of the start table and check if a > relation exists for the current one (as above). > > -- > Arnaud de Montard > > > > ********************************************************************** > 4D Internet Users Group (4D iNUG) > Archive: http://lists.4d.com/archives.html > Options: https://lists.4d.com/mailman/options/4d_tech > Unsub: mailto:[email protected] > ********************************************************************** -- ----------------------------------------------------------------------------------------- Chuck Miller Voice: (617) 739-0306 Fax: (617) 232-1064 Informed Solutions, Inc. Brookline, MA 02446 USA Registered 4D Developer Providers of 4D, Sybase & SQL Server connectivity http://www.informed-solutions.com ----------------------------------------------------------------------------------------- This message and any attached documents contain information which may be confidential, subject to privilege or exempt from disclosure under applicable law. These materials are intended only for the use of the intended recipient. If you are not the intended recipient of this transmission, you are hereby notified that any distribution, disclosure, printing, copying, storage, modification or the taking of any action in reliance upon this transmission is strictly prohibited. Delivery of this message to any person other than the intended recipient shall not compromise or waive such confidentiality, privilege or exemption from disclosure as to this communication. ********************************************************************** 4D Internet Users Group (4D iNUG) Archive: http://lists.4d.com/archives.html Options: https://lists.4d.com/mailman/options/4d_tech Unsub: mailto:[email protected] **********************************************************************
