From 215727fb7c6785d76445295e3f86bb0ddfcdeee6 Mon Sep 17 00:00:00 2001
From: Brendan Gerrity <brendan.gerrity@cockroachlabs.com>
Date: Mon, 22 Dec 2025 21:04:41 -0500
Subject: [PATCH] sql: add row count interface for inspect checks

The interface allows checks to expose row counts of a span to other
checks.

Part of: #155472
Epic: CRDB-55075

Release note: None
---
 pkg/sql/inspect/BUILD.bazel        |  1 +
 pkg/sql/inspect/row_count_check.go | 15 +++++++++++++++
 2 files changed, 16 insertions(+)
 create mode 100644 pkg/sql/inspect/row_count_check.go

diff --git a/pkg/sql/inspect/BUILD.bazel b/pkg/sql/inspect/BUILD.bazel
index d8f659c001f8..edcfb2446b20 100644
--- a/pkg/sql/inspect/BUILD.bazel
+++ b/pkg/sql/inspect/BUILD.bazel
@@ -13,6 +13,7 @@ go_library(
         "issue.go",
         "log_sink.go",
         "progress.go",
+        "row_count_check.go",
         "runner.go",
         "span_source.go",
         "table_sink.go",
diff --git a/pkg/sql/inspect/row_count_check.go b/pkg/sql/inspect/row_count_check.go
new file mode 100644
index 000000000000..447a0f9a4c39
--- /dev/null
+++ b/pkg/sql/inspect/row_count_check.go
@@ -0,0 +1,15 @@
+// Copyright 2025 The Cockroach Authors.
+//
+// Use of this software is governed by the CockroachDB Software License
+// included in the /LICENSE file.
+
+package inspect
+
+// inspectCheckRowCount defines an inspectCheck that counts rows in addition to
+// its primary validation.
+type inspectCheckRowCount interface {
+	inspectCheck
+
+	// Rows returns the number of rows counted by the check.
+	Rows() uint64
+}