ttl: Add some tools to build SQLs for TTL (#39359)

close #39339

ttl/BUILD.bazel

@@ -0,0 +1,44 @@
+load("@io_bazel_rules_go//go:def.bzl", "go_library", "go_test")
+
+go_library(
+    name = "ttl",
+    srcs = [
+        "sql.go",
+        "table.go",
+    ],
+    importpath = "github.com/pingcap/tidb/ttl",
+    visibility = ["//visibility:public"],
+    deps = [
+        "//parser/ast",
+        "//parser/format",
+        "//parser/model",
+        "//parser/mysql",
+        "//types",
+        "//util/sqlexec",
+        "@com_github_pingcap_errors//:errors",
+        "@com_github_pkg_errors//:errors",
+    ],
+)
+
+go_test(
+    name = "ttl_test",
+    srcs = [
+        "main_test.go",
+        "sql_test.go",
+    ],
+    flaky = True,
+    deps = [
+        ":ttl",
+        "//kv",
+        "//parser",
+        "//parser/ast",
+        "//parser/model",
+        "//parser/mysql",
+        "//testkit",
+        "//testkit/testsetup",
+        "//types",
+        "//util/sqlexec",
+        "@com_github_stretchr_testify//require",
+        "@org_uber_go_goleak//:goleak",
+    ],
+)

ttl/main_test.go

@@ -0,0 +1,33 @@
+// Copyright 2022 PingCAP, 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 ttl_test
+
+import (
+	"testing"
+
+	"github.com/pingcap/tidb/testkit/testsetup"
+	"go.uber.org/goleak"
+)
+
+func TestMain(m *testing.M) {
+	testsetup.SetupForCommonTest()
+	opts := []goleak.Option{
+		goleak.IgnoreTopFunction("github.com/golang/glog.(*loggingT).flushDaemon"),
+		goleak.IgnoreTopFunction("github.com/lestrrat-go/httprc.runFetchWorker"),
+		goleak.IgnoreTopFunction("go.etcd.io/etcd/client/pkg/v3/logutil.(*MergeLogger).outputLoop"),
+		goleak.IgnoreTopFunction("go.opencensus.io/stats/view.(*worker).start"),
+	}
+	goleak.VerifyTestMain(m, opts...)
+}