diff --git a/server/functions/init.go b/server/functions/init.go index 1fad127c0a..bc54766da6 100644 --- a/server/functions/init.go +++ b/server/functions/init.go @@ -94,5 +94,6 @@ func Init() { initTrimScale() initTrunc() initUpper() + initVersion() initWidthBucket() } diff --git a/server/functions/version.go b/server/functions/version.go new file mode 100644 index 0000000000..50ab90d4f0 --- /dev/null +++ b/server/functions/version.go @@ -0,0 +1,41 @@ +// Copyright 2024 Dolthub, Inc. +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +package functions + +import ( + "fmt" + + "github.com/dolthub/go-mysql-server/sql" + + "github.com/dolthub/doltgresql/server/functions/framework" + pgtypes "github.com/dolthub/doltgresql/server/types" +) + +const postgresVersion = "15.5" + +// initVersion registers the functions to the catalog. +func initVersion() { + framework.RegisterFunction(version) +} + +// version represents the PostgreSQL system information function of the same name, taking no parameters. +var version = framework.Function0{ + Name: "version", + Return: pgtypes.Text, + Strict: true, + Callable: func(ctx *sql.Context) (any, error) { + return fmt.Sprintf("PostgreSQL %s", postgresVersion), nil + }, +} diff --git a/testing/go/functions_test.go b/testing/go/functions_test.go index 9f33951d4b..13f6d7a842 100644 --- a/testing/go/functions_test.go +++ b/testing/go/functions_test.go @@ -321,5 +321,16 @@ func TestSystemInformationFunctions(t *testing.T) { }, }, }, + { + Name: "version", + Assertions: []ScriptTestAssertion{ + { + Query: `SELECT version();`, + Expected: []sql.Row{ + {"PostgreSQL 15.5"}, + }, + }, + }, + }, }) }