Automatically turn on text protocol when connecting to redshift

.github/workflows/Linux.yml

@@ -27,6 +27,18 @@ jobs:
       VCPKG_TOOLCHAIN_PATH: ${{ github.workspace }}/vcpkg/scripts/buildsystems/vcpkg.cmake
 
     steps:
+    - name: Free disk space 1
+      uses: endersonmenezes/free-disk-space@v2.1.1
+      continue-on-error: true
+      with:
+#          remove_android: true # ~9.5GB in #52s
+#          remove_dotnet: true
+        remove_haskell: true # ~6.5GB in ~3s
+        remove_tool_cache: true # ~4.8GB in ~17s
+#          remove_swap: true
+#          remove_packages_one_command: true # ~7.5 GB in ~94s
+        testing: false
+
     - name: Install required ubuntu packages
       run: |
         sudo apt-get update -y -qq

src/include/postgres_version.hpp

@@ -12,7 +12,7 @@
 
 namespace duckdb {
 
-enum class PostgresInstanceType { UNKNOWN, POSTGRES, AURORA };
+enum class PostgresInstanceType { UNKNOWN, POSTGRES, AURORA, REDSHIFT };
 
 struct PostgresVersion {
 	PostgresVersion() {

src/postgres_connection.cpp

@@ -128,10 +128,14 @@ PostgresVersion PostgresConnection::GetPostgresVersion() {
 		version.type_v = PostgresInstanceType::UNKNOWN;
 		return version;
 	}
-	auto version = PostgresUtils::ExtractPostgresVersion(result->GetString(0, 0));
+	auto pg_version_string = result->GetString(0, 0);
+	auto version = PostgresUtils::ExtractPostgresVersion(pg_version_string);
 	if (result->GetInt64(0, 1) > 0) {
 		version.type_v = PostgresInstanceType::AURORA;
 	}
+	if (StringUtil::Contains(pg_version_string, "Redshift")) {
+		version.type_v = PostgresInstanceType::REDSHIFT;
+	}
 	return version;
 }
 

src/postgres_scanner.cpp

@@ -130,6 +130,9 @@ void PostgresScanFunction::PrepareBind(PostgresVersion version, ClientContext &c
 	}
 	bind_data.SetTablePages(approx_num_pages);
 	bind_data.version = version;
+	if (version.type_v == PostgresInstanceType::REDSHIFT) {
+		bind_data.use_text_protocol = true;
+	}
 }
 
 PostgresBindData::PostgresBindData(ClientContext &context) {