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Add Tabular function showcase
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‎showcases/data/Store/Relational Store/Database Specification/Tabular Function/code.pure‎

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###Relational
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Database demo::udtf::DemoDb
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(
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Schema Org
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(
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Table Firm
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(
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firmId INTEGER,
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legalname VARCHAR(200)
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)
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TabularFunction Person
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(
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firstname VARCHAR(200),
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lastname VARCHAR(200),
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age INTEGER,
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associatedFirmId INTEGER
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)
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TabularFunction Person2
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(
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firstname VARCHAR(200),
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lastname VARCHAR(200),
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age INTEGER,
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associatedFirmId INTEGER
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)
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TabularFunction ParentAndChildren
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(
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firstname VARCHAR(200),
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lastname VARCHAR(200),
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id INTEGER,
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age INTEGER,
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parentId INTEGER
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)
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)
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Join firm_person(Org.Firm.firmId = Org.Person.associatedFirmId)
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Join firm_person2(Org.Firm.firmId = Org.Person2.associatedFirmId)
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Join relationship(Org.ParentAndChildren.parentId = {target}.id)
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)
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###Pure
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Class demo::udtf::Org::Firm
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{
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firmId: Integer[1];
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legalname: String[1];
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}
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Class demo::udtf::Org::Person
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{
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firstname: String[1];
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lastname: String[1];
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age: Integer[1];
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associatedFirmId: Integer[1];
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id: Integer[1];
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}
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Association demo::udtf::Person_person
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{
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parent: demo::udtf::Org::Person[1];
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children: demo::udtf::Org::Person[1..*];
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}
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Association demo::udtf::firm_person
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{
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assoacitedFirm: demo::udtf::Org::Firm[1];
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associatedPerson: demo::udtf::Org::Person[1..*];
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}
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function demo::udtf::Org::FirmToPerson(): meta::pure::tds::TabularDataSet[1]
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{
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demo::udtf::Org::Firm.all()
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->project(
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[
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x|$x.firmId,
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x|$x.associatedPerson.age
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],
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[
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'Firm Id',
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'Associated Person/Age'
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]
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)->from(
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demo::udtf::DemoMapping,
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demo::runtimes::DemoRuntime
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)
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}
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function demo::udtf::Org::FirmToPersonWithFilterOnPerson(): meta::pure::tds::TabularDataSet[1]
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{
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demo::udtf::Org::Firm.all()->filter(
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x|$x.associatedPerson->exists(
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x_1|$x_1.firstname == 'David'
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)
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)->project(
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[
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x|$x.firmId,
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x|$x.associatedPerson.age
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],
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[
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'Firm Id',
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'Associated Person/Age'
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]
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)->from(
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demo::udtf::DemoMapping,
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demo::runtimes::DemoRuntime
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)
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}
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function demo::udtf::Org::FirmToPersonWithFilterOnPersonUsingUnion(): meta::pure::tds::TabularDataSet[1]
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{
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demo::udtf::Org::Firm.all()->filter(
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x|$x.associatedPerson->exists(
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x_1|$x_1.firstname == 'David'
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)
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)->project(
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[
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x|$x.firmId,
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x|$x.associatedPerson.age
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],
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[
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'Firm Id',
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'Associated Person/Age'
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]
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)->from(
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demo::udtf::DemoMappingUnion,
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demo::runtimes::DemoRuntime
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)
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}
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function demo::udtf::Org::FetchChildrenViaSelfJoin(): meta::pure::tds::TabularDataSet[1]
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{
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demo::udtf::Org::Person.all()->project(
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[
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x|$x.firstname,
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x|$x.id,
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x|$x.children.age,
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x|$x.children.id,
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x|$x.children.firstname
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],
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[
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'Firstname',
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'Id',
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'Children/Age',
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'Children/Id',
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'Children/Firstname'
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]
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)->from(
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demo::udtf::DemoMappingSelfJoin,
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demo::runtimes::DemoRuntime
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)
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}
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###Mapping
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Mapping demo::udtf::DemoMapping
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(
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*demo::udtf::Org::Firm[f]: Relational
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{
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~primaryKey
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(
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[demo::udtf::DemoDb]Org.Firm.firmId,
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[demo::udtf::DemoDb]Org.Firm.legalname
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)
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~mainTable [demo::udtf::DemoDb]Org.Firm
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firmId: [demo::udtf::DemoDb]Org.Firm.firmId,
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legalname: [demo::udtf::DemoDb]Org.Firm.legalname
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}
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*demo::udtf::Org::Person[p]: Relational
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{
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~mainTable [demo::udtf::DemoDb]Org.Person
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firstname: [demo::udtf::DemoDb]Org.Person.firstname,
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lastname: [demo::udtf::DemoDb]Org.Person.lastname,
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age: [demo::udtf::DemoDb]Org.Person.age
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}
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demo::udtf::firm_person: Relational
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{
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AssociationMapping
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(
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assoacitedFirm[p,f]: [demo::udtf::DemoDb]@firm_person,
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associatedPerson[f,p]: [demo::udtf::DemoDb]@firm_person
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)
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}
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)
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###Mapping
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Mapping demo::udtf::DemoMappingUnion
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(
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*demo::udtf::Org::Person: Operation
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{
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meta::pure::router::operations::union_OperationSetImplementation_1__SetImplementation_MANY_(p1,p2)
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}
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*demo::udtf::Org::Firm[f]: Relational
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{
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~primaryKey
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(
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[demo::udtf::DemoDb]Org.Firm.firmId,
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[demo::udtf::DemoDb]Org.Firm.legalname
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)
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~mainTable [demo::udtf::DemoDb]Org.Firm
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firmId: [demo::udtf::DemoDb]Org.Firm.firmId,
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legalname: [demo::udtf::DemoDb]Org.Firm.legalname
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}
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demo::udtf::Org::Person[p1]: Relational
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{
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~mainTable [demo::udtf::DemoDb]Org.Person
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firstname: [demo::udtf::DemoDb]Org.Person.firstname,
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lastname: [demo::udtf::DemoDb]Org.Person.lastname,
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age: [demo::udtf::DemoDb]Org.Person.age
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}
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demo::udtf::Org::Person[p2]: Relational
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{
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~mainTable [demo::udtf::DemoDb]Org.Person2
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firstname: [demo::udtf::DemoDb]Org.Person2.firstname,
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lastname: [demo::udtf::DemoDb]Org.Person2.lastname,
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age: [demo::udtf::DemoDb]Org.Person2.age
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}
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demo::udtf::firm_person: Relational
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{
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AssociationMapping
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(
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assoacitedFirm[p1,f]: [demo::udtf::DemoDb]@firm_person,
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assoacitedFirm[p2,f]: [demo::udtf::DemoDb]@firm_person2,
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associatedPerson[f,p1]: [demo::udtf::DemoDb]@firm_person,
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associatedPerson[f,p2]: [demo::udtf::DemoDb]@firm_person2
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)
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}
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)
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###Mapping
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Mapping demo::udtf::DemoMappingSelfJoin
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(
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*demo::udtf::Org::Person[p1]: Relational
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{
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~primaryKey
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(
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[demo::udtf::DemoDb]Org.ParentAndChildren.firstname
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)
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~mainTable [demo::udtf::DemoDb]Org.ParentAndChildren
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firstname: [demo::udtf::DemoDb]Org.ParentAndChildren.firstname,
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lastname: [demo::udtf::DemoDb]Org.ParentAndChildren.lastname,
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id: [demo::udtf::DemoDb]Org.ParentAndChildren.id,
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age: [demo::udtf::DemoDb]Org.ParentAndChildren.age
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}
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demo::udtf::Person_person: Relational
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{
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AssociationMapping
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(
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children[p1,p1]: [demo::udtf::DemoDb]@relationship,
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parent[p1,p1]: [demo::udtf::DemoDb]@relationship
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)
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}
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)
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###Connection
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RelationalDatabaseConnection demo::udtf::DemoSnowflakeConnection
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{
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store: demo::udtf::DemoDb;
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type: Snowflake;
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specification: Snowflake
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{
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name: 'SUMMIT_MDM_DATA';
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account: 'sfcedeawseast1d01';
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warehouse: 'DEMO_WH';
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region: 'us-east-1';
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};
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auth: SnowflakePublic
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{
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publicUserName: 'isThis';
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privateKeyVaultReference: 'Hi';
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passPhraseVaultReference: 'What';
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};
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}
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###Runtime
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Runtime demo::runtimes::DemoRuntime
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{
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mappings:
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[
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demo::udtf::DemoMapping
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];
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connections:
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[
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demo::udtf::DemoDb:
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[
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connection_2: demo::udtf::DemoSnowflakeConnection
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]
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];
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}
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###Snowflake
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SnowflakeApp demo::udtf::snowflakeApp::App1
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{
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applicationName : 'App1_revised';
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function : demo::udtf::Org::FirmToPersonWithFilterOnPersonUsingUnion():TabularDataSet[1];
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ownership : Deployment { identifier: '441143'};
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description : 'test App';
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activationConfiguration : demo::udtf::DemoSnowflakeConnection;
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}

‎showcases/data/Store/Relational Store/Database Specification/Tabular Function/info.md‎

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---
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title: Relational Database Specification with Tabular Functions
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description: Example of database specification with tabular Function.
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---
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Tabular functions are database objects that effectively function as parameterized views.
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This showcase gives examples of tabular functions that do not accept any parameters.

‎showcases/pom.xml‎

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<maven.compiler.target>1.8</maven.compiler.target>
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<maven.surefire.thread.count>3</maven.surefire.thread.count>
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<showcase.projects.location>data</showcase.projects.location>
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<legend.engine.version>4.54.1</legend.engine.version>
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<legend.engine.version>4.68.0</legend.engine.version>
2020

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</properties>
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