From 544338dd4601406f878f1314428f4c8a31d38893 Mon Sep 17 00:00:00 2001
From: Kyle Carberry <kyle@carberry.com>
Date: Tue, 18 Oct 2022 00:37:04 +0000
Subject: [PATCH 1/2] chore: Enforce PostgreSQL >=13

Fixes #4608.
---
 cli/server.go | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

diff --git a/cli/server.go b/cli/server.go
index b9861bf141f42..5a5d69bbd0ab2 100644
--- a/cli/server.go
+++ b/cli/server.go
@@ -33,6 +33,7 @@ import (
 	"github.com/spf13/afero"
 	"github.com/spf13/cobra"
 	"go.opentelemetry.io/otel/trace"
+	"golang.org/x/mod/semver"
 	"golang.org/x/oauth2"
 	xgithub "golang.org/x/oauth2/github"
 	"golang.org/x/sync/errgroup"
@@ -389,6 +390,22 @@ func Server(dflags *codersdk.DeploymentFlags, newAPI func(context.Context, *code
 					return xerrors.Errorf("dial postgres: %w", err)
 				}
 				defer sqlDB.Close()
+				// Ensure the PostgreSQL version is >=13.0.0!
+				version, err := sqlDB.QueryContext(ctx, "SHOW server_version;")
+				if err != nil {
+					return xerrors.Errorf("get postgres version: %w", err)
+				}
+				if !version.Next() {
+					return xerrors.Errorf("no rows returned for version select")
+				}
+				var versionStr string
+				err = version.Scan(&versionStr)
+				if err != nil {
+					return xerrors.Errorf("scan version: %w", err)
+				}
+				if semver.Compare("v"+versionStr, "v13") < 0 {
+					return xerrors.New("PostgreSQL version must be v13.0.0 or higher!")
+				}
 
 				err = sqlDB.Ping()
 				if err != nil {

From 46ebc86b4bdf764082c52a9e25e4fe3fc56acc74 Mon Sep 17 00:00:00 2001
From: Kyle Carberry <kyle@carberry.com>
Date: Tue, 18 Oct 2022 00:46:46 +0000
Subject: [PATCH 2/2] Fix version string parsing

---
 cli/server.go      | 1 +
 cli/server_test.go | 3 +++
 2 files changed, 4 insertions(+)

diff --git a/cli/server.go b/cli/server.go
index 5a5d69bbd0ab2..25b435ed6c673 100644
--- a/cli/server.go
+++ b/cli/server.go
@@ -403,6 +403,7 @@ func Server(dflags *codersdk.DeploymentFlags, newAPI func(context.Context, *code
 				if err != nil {
 					return xerrors.Errorf("scan version: %w", err)
 				}
+				versionStr = strings.Split(versionStr, " ")[0]
 				if semver.Compare("v"+versionStr, "v13") < 0 {
 					return xerrors.New("PostgreSQL version must be v13.0.0 or higher!")
 				}
diff --git a/cli/server_test.go b/cli/server_test.go
index fe71da93094bb..d91e2e8889352 100644
--- a/cli/server_test.go
+++ b/cli/server_test.go
@@ -60,6 +60,9 @@ func TestServer(t *testing.T) {
 			"--postgres-url", connectionURL,
 			"--cache-dir", t.TempDir(),
 		)
+		pty := ptytest.New(t)
+		root.SetOutput(pty.Output())
+		root.SetErr(pty.Output())
 		errC := make(chan error, 1)
 		go func() {
 			errC <- root.ExecuteContext(ctx)