I understand we can use a Standalone filter without individual column filters (https://akveo.github.io/ng2-smart-table/#/examples/using-filters) But is it possible to use both?
I tried to implement it but could not. See https://stackblitz.com/edit/angular-2cwakj?file=src%2Fapp%2Ffilter-poc%2Ffilter-poc.component.ts
Change your onSearch function with following function.
onSearch(query: string = '') {
this.source = new LocalDataSource(this.data.filter((obj)=>{
if(obj.id.toString().indexOf(query)>-1 || obj.name.indexOf(query)>-1 ||
obj.username.indexOf(query)>-1 ||obj.email.indexOf(query)>-1 ) return true;
else false;
}))
}