Fixed #25687 -- Documented how to add database function support to third-party backends.
Fixed #25687 -- Documented how to add database function support to third-party backends.

Thanks Kristof Claes for the initial patch.

auready/django,ifduyue/django,darkryder/django,MoritzS/django,frankvdp/django,elena/django,rlugojr/django,darkryder/django,erikr/django,takis/django,yewang15215/django,tysonclugg/django,EmadMokhtar/Django,pauloxnet/django,shacker/django,sergei-maertens/django,zsiciarz/django,camilonova/django,sjlehtin/django,whs/django,fenginx/django,hobarrera/django,tomchristie/django,frankvdp/django,labcodes/django,mattseymour/django,harisibrahimkv/django,jpic/django,rsalmaso/django,sarthakmeh03/django,rynomster/django,etos/django,baylee/django,jarshwah/django,georgemarshall/django,mathspace/django,auready/django,carljm/django,atul-bhouraskar/django,Beauhurst/django,apollo13/django,timgraham/django,ebar0n/django,sgzsh269/django,theo-l/django,hobarrera/django,lwiecek/django,wkschwartz/django,dracos/django,guettli/django,camilonova/django,jarshwah/django,alimony/django,darjeeling/django,elena/django,ghedsouza/django,atul-bhouraskar/django,monetate/django,gitaarik/django,rlugojr/django,ifduyue/django,frankvdp/django,alexallah/django,MoritzS/django,mojeto/django,mathspace/django,monetate/django,blighj/django,dfunckt/django,mathspace/django,takis/django,zsiciarz/django,timgraham/django,elky/django,labcodes/django,koniiiik/django,wkschwartz/django,rynomster/django,googleinterns/django,taaviteska/django,bak1an/django,twz915/django,auvipy/django,treyhunner/django,django/django,arun6582/django,kosz85/django,jpic/django,blindroot/django,django/django,mjtamlyn/django,koniiiik/django,loic/django,mjtamlyn/django,whs/django,krisys/django,peterlauri/django,filias/django,takis/django,arun6582/django,elena/django,dgladkov/django,ebar0n/django,phalt/django,jarshwah/django,treyhunner/django,edmorley/django,daniponi/django,dfdx2/django,vincepandolfo/django,schinckel/django,auvipy/django,fenginx/django,baylee/django,elky/django,indevgr/django,loic/django,savoirfairelinux/django,dfdx2/django,evansd/django,darjeeling/django,manhhomienbienthuy/django,tbeadle/django,mlavin/django,taaviteska/django,alexallah/django,Leila20/django,sarthakmeh03/django,evansd/django,wkschwartz/django,avneesh91/django,tomchristie/django,uranusjr/django,lwiecek/django,elky/django,denys-duchier/django,loic/django,filias/django,freakboy3742/django,dracos/django,django/django,sgzsh269/django,solarissmoke/django,blindroot/django,piquadrat/django,kutenai/django,bak1an/django,pauloxnet/django,koordinates/django,googleinterns/django,mitya57/django,MarkusH/django,felixxm/django,Endika/django,tysonclugg/django,charettes/django,adamchainz/django,guettli/django,techdragon/django,dfunckt/django,pauloxnet/django,lwiecek/django,tysonclugg/django,elky/django,frankvdp/django,etos/django,ghickman/django,twz915/django,shacker/django,treyhunner/django,dracos/django,asser/django,mjtamlyn/django,sgzsh269/django,harisibrahimkv/django,Leila20/django,yewang15215/django,nemesisdesign/django,mjtamlyn/django,techdragon/django,piquadrat/django,rhertzog/django,koordinates/django,theo-l/django,uranusjr/django,mlavin/django,monetate/django,timgraham/django,ghedsouza/django,reinout/django,frishberg/django,evansd/django,avneesh91/django,dgladkov/django,erikr/django,guettli/django,darkryder/django,Endika/django,frishberg/django,intgr/django,denys-duchier/django,mitya57/django,auvipy/django,shaib/django,tbeadle/django,MoritzS/django,jscn/django,guettli/django,claudep/django,savoirfairelinux/django,techdragon/django,adamchainz/django,indevgr/django,monetate/django,simonw/django,savoirfairelinux/django,darjeeling/django,ghedsouza/django,peterlauri/django,schinckel/django,sergei-maertens/django,jarshwah/django,georgemarshall/django,camilonova/django,whs/django,lwiecek/django,blighj/django,syphar/django,peterlauri/django,intgr/django,aisipos/django,fenginx/django,rlugojr/django,willhardy/django,tomchristie/django,aisipos/django,adamchainz/django,filias/django,filias/django,twz915/django,darjeeling/django,phalt/django,rynomster/django,krisys/django,willhardy/django,loic/django,peterlauri/django,manhhomienbienthuy/django,manhhomienbienthuy/django,harisibrahimkv/django,Beauhurst/django,adamchainz/django,baylee/django,ghedsouza/django,sarthakmeh03/django,frishberg/django,taaviteska/django,dracos/django,willhardy/django,syphar/django,syphar/django,mojeto/django,rynomster/django,mitya57/django,avneesh91/django,ifduyue/django,schinckel/django,koniiiik/django,alimony/django,simonw/django,dgladkov/django,claudep/django,sadaf2605/django,charettes/django,dfunckt/django,mattseymour/django,krisys/django,tomchristie/django,arun6582/django,savoirfairelinux/django,sarthakmeh03/django,Beauhurst/django,sgzsh269/django,gitaarik/django,willhardy/django,sergei-maertens/django,bak1an/django,auready/django,erikr/django,MarkusH/django,tysonclugg/django,dfunckt/django,dsanders11/django,syphar/django,indevgr/django,rsalmaso/django,claudep/django,felixxm/django,django/django,Leila20/django,georgemarshall/django,ifduyue/django,gitaarik/django,schinckel/django,ghickman/django,treyhunner/django,charettes/django,blighj/django,alexallah/django,dfdx2/django,arun6582/django,gitaarik/django,freakboy3742/django,rhertzog/django,apollo13/django,rsalmaso/django,aisipos/django,jpic/django,freakboy3742/django,asser/django,sadaf2605/django,labcodes/django,bak1an/django,auvipy/django,daniponi/django,sjlehtin/django,piquadrat/django,hobarrera/django,simonw/django,kutenai/django,blindroot/django,hobarrera/django,ghickman/django,mitya57/django,sadaf2605/django,kaedroho/django,googleinterns/django,reinout/django,vincepandolfo/django,labcodes/django,uranusjr/django,solarissmoke/django,reinout/django,solarissmoke/django,mlavin/django,jscn/django,MarkusH/django,evansd/django,frishberg/django,fenginx/django,shaib/django,MoritzS/django,theo-l/django,Beauhurst/django,denys-duchier/django,etos/django,kosz85/django,intgr/django,jscn/django,felixxm/django,alimony/django,rlugojr/django,dsanders11/django,takis/django,edmorley/django,nemesisdesign/django,krisys/django,nemesisdesign/django,Leila20/django,vincepandolfo/django,indevgr/django,phalt/django,daniponi/django,kaedroho/django,yewang15215/django,shaib/django,felixxm/django,kaedroho/django,ebar0n/django,claudep/django,kutenai/django,edmorley/django,edmorley/django,elena/django,dsanders11/django,sjlehtin/django,rsalmaso/django,googleinterns/django,koordinates/django,etos/django,mojeto/django,jscn/django,apollo13/django,dgladkov/django,rhertzog/django,koordinates/django,phalt/django,EmadMokhtar/Django,denys-duchier/django,vincepandolfo/django,charettes/django,sergei-maertens/django,intgr/django,dfdx2/django,blindroot/django,asser/django,atul-bhouraskar/django,yewang15215/django,zsiciarz/django,kosz85/django,zsiciarz/django,Endika/django,blighj/django,asser/django,sadaf2605/django,dsanders11/django,mathspace/django,piquadrat/django,techdragon/django,shacker/django,taaviteska/django,tbeadle/django,auready/django,mojeto/django,atul-bhouraskar/django,carljm/django,avneesh91/django,alimony/django,Endika/django,georgemarshall/django,kutenai/django,darkryder/django,carljm/django,apollo13/django,koniiiik/django,carljm/django,mattseymour/django,whs/django,theo-l/django,camilonova/django,kosz85/django,MarkusH/django,mlavin/django,manhhomienbienthuy/django,tbeadle/django,daniponi/django,alexallah/django,harisibrahimkv/django,reinout/django,erikr/django,aisipos/django,simonw/django,solarissmoke/django,pauloxnet/django,wkschwartz/django,mattseymour/django,rhertzog/django,timgraham/django,sjlehtin/django,shacker/django,uranusjr/django,shaib/django,jpic/django,twz915/django,ghickman/django,nemesisdesign/django,EmadMokhtar/Django,ebar0n/django,baylee/django