diff --git a/.github/workflows/checks.yml b/.github/workflows/checks.yml
index e86d57304..e53f4c538 100644
--- a/.github/workflows/checks.yml
+++ b/.github/workflows/checks.yml
@@ -8,6 +8,10 @@ env:
   GO_VERSION: 1.19
   CGO_ENABLED: 0
 
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
 jobs:
   tests:
     name: tests
@@ -15,7 +19,7 @@ jobs:
     timeout-minutes: 30
     strategy:
       matrix:
-        pg_version: [12, 13, 14]
+        pg_version: [9.6, 10, 11, 12, 13, 14, 15]
 
     services:
       postgres:
@@ -32,6 +36,13 @@ jobs:
             --health-timeout 5s
             --health-retries 5
     steps:
+      - name: Install latest Postgres client
+        run: |
+          sudo rm -f /etc/apt/sources.list.d/pgdg.list
+          curl --silent https://www.postgresql.org/media/keys/ACCC4CF8.asc | sudo apt-key add
+          echo "deb http://apt.postgresql.org/pub/repos/apt/ `lsb_release -cs`-pgdg main" | sudo tee /etc/apt/sources.list.d/pgdg.list
+          sudo apt-get update && sudo apt-get install -y postgresql-client-15
+
       - uses: actions/checkout@v3
         with:
           fetch-depth: 0
diff --git a/data/booktown.sql b/data/booktown.sql
index aecccac6c..a7345f2be 100644
--- a/data/booktown.sql
+++ b/data/booktown.sql
@@ -10,7 +10,7 @@
 DROP DATABASE IF EXISTS "booktown";
 CREATE DATABASE "booktown";
 
-\connect booktown postgres
+-- \connect booktown postgres
 --
 -- TOC Entry ID 2 (OID 2991542)
 --
@@ -1293,7 +1293,7 @@ CREATE VIEW "recent_shipments" as SELECT count(*) AS num_shipped, max(shipments.
 
 
 COPY "publishers"  FROM stdin;
-150	Kids Can Press	Kids Can Press, 29 Birch Ave. Toronto, ON  M4V 1E2
+150	Kids Can Press	Kids Can Press, 29 Birch Ave. Toronto,�ON��M4V 1E2
 91	Henry Holt & Company, Inc.	Henry Holt & Company, Inc. 115 West 18th Street New York, NY 10011
 113	O'Reilly & Associates	O'Reilly & Associates, Inc. 101 Morris St, Sebastopol, CA 95472
 62	Watson-Guptill Publications	1515 Boradway, New York, NY 10036
diff --git a/docker-compose-pg.yml b/docker-compose-pg.yml
new file mode 100644
index 000000000..c07f9d018
--- /dev/null
+++ b/docker-compose-pg.yml
@@ -0,0 +1,48 @@
+---
+version: "3.9"
+
+x-base: &base
+  environment: &env
+    POSTGRES_DB: pgweb
+    POSTGRES_PASSWORD: pgweb
+    POSTGRES_USER: pgweb
+  healthcheck:
+    test: pg_isready -U pgweb -h 127.0.0.1
+    interval: 5s
+
+services:
+  postgres15:
+    <<: *base
+    image: postgres:15
+    ports:
+      - 5433:5432
+  postgres14:
+    <<: *base
+    image: postgres:14
+    ports:
+      - 5434:5432
+  postgres13:
+    <<: *base
+    image: postgres:13
+    ports:
+      - 5435:5432
+  postgres12:
+    <<: *base
+    image: postgres:12
+    ports:
+      - 5436:5432
+  postgres11:
+    <<: *base
+    image: postgres:11
+    ports:
+      - 5437:5432
+  postgres10:
+    <<: *base
+    image: postgres:10
+    ports:
+      - 5438:5432
+  postgres9.6:
+    <<: *base
+    image: postgres:9.6
+    ports:
+      - 5439:5432
diff --git a/pkg/client/client_test.go b/pkg/client/client_test.go
index 7072b9f39..252c4db25 100644
--- a/pkg/client/client_test.go
+++ b/pkg/client/client_test.go
@@ -7,6 +7,7 @@ import (
 	"os/exec"
 	"runtime"
 	"sort"
+	"strings"
 	"testing"
 	"time"
 
@@ -143,7 +144,7 @@ func teardownClient() {
 	}
 }
 
-func teardown() {
+func teardown(t *testing.T, allowFail bool) {
 	output, err := exec.Command(
 		testCommands["dropdb"],
 		"-U", serverUser,
@@ -152,9 +153,13 @@ func teardown() {
 		serverDatabase,
 	).CombinedOutput()
 
-	if err != nil {
-		fmt.Println("Teardown error:", err)
-		fmt.Printf("%s\n", output)
+	if err != nil && strings.Contains(err.Error(), "does not exist") {
+		t.Log("Teardown error:", err)
+		t.Logf("%s\n", output)
+
+		if !allowFail {
+			assert.NoError(t, err)
+		}
 	}
 }
 
@@ -602,7 +607,7 @@ func TestAll(t *testing.T) {
 
 	initVars()
 	setupCommands()
-	teardown()
+	teardown(t, false)
 	setup()
 	setupClient()
 
@@ -632,5 +637,5 @@ func TestAll(t *testing.T) {
 	testDumpExport(t)
 
 	teardownClient()
-	teardown()
+	teardown(t, true)
 }
diff --git a/pkg/statements/sql/function.sql b/pkg/statements/sql/function.sql
index 4eede756d..b2473b806 100644
--- a/pkg/statements/sql/function.sql
+++ b/pkg/statements/sql/function.sql
@@ -1,5 +1,8 @@
 SELECT
-  p.*,
+  p.oid,
+  p.proname,
+  p.pronamespace,
+  p.proowner,
   pg_get_functiondef(oid) AS functiondef
 FROM
   pg_catalog.pg_proc p
diff --git a/pkg/statements/sql/objects.sql b/pkg/statements/sql/objects.sql
index 43e73d6a6..d9707109c 100644
--- a/pkg/statements/sql/objects.sql
+++ b/pkg/statements/sql/objects.sql
@@ -40,7 +40,6 @@ WITH all_objects AS (
   WHERE
     n.nspname !~ '^pg_toast'
     AND n.nspname NOT IN ('information_schema', 'pg_catalog')
-    AND p.prokind = 'f'
 )
 SELECT * FROM all_objects
 ORDER BY 1, 2