From ad14a7ff237d2e532f1707b7919c89bf36501c8f Mon Sep 17 00:00:00 2001
From: Boris Tyshkevich <btyshkevich@altinity.com>
Date: Thu, 24 Sep 2026 10:53:36 +0200
Subject: [PATCH] parser: support SHOW ACCESS

---
 parser/altinity_show_access_test.go | 22 ++++++++++++++++++++++
 parser/parser_table.go              |  7 ++++++-
 2 files changed, 28 insertions(+), 1 deletion(-)
 create mode 100644 parser/altinity_show_access_test.go

diff --git a/parser/altinity_show_access_test.go b/parser/altinity_show_access_test.go
new file mode 100644
index 0000000..8000b47
--- /dev/null
+++ b/parser/altinity_show_access_test.go
@@ -0,0 +1,22 @@
+package parser
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/require"
+)
+
+func TestShowAccess(t *testing.T) {
+	stmts, err := NewParser("SHOW ACCESS").ParseStmts()
+	require.NoError(t, err)
+	require.Len(t, stmts, 1)
+	show, ok := stmts[0].(*ShowStmt)
+	require.True(t, ok)
+	require.Equal(t, "ACCESS", show.ShowType)
+	require.Equal(t, "SHOW ACCESS", Format(show))
+
+	for _, sql := range []string{"SHOW ACCESS JUNK", "SHOW ACCESS LIMIT 1", "SHOW ACCESS FROM system.users"} {
+		_, err := NewParser(sql).ParseStmts()
+		require.Error(t, err, sql)
+	}
+}
diff --git a/parser/parser_table.go b/parser/parser_table.go
index 6d962c5..30ef6bc 100644
--- a/parser/parser_table.go
+++ b/parser/parser_table.go
@@ -1780,8 +1780,13 @@ func (p *Parser) parseShowStmt(pos Pos) (*ShowStmt, error) {
 		showType = "TABLES"
 		_ = p.lexer.consumeToken()
 
+	case strings.EqualFold(p.currentTokenString(), "ACCESS"):
+		// SHOW ACCESS has no arguments or optional clauses.
+		showType = "ACCESS"
+		_ = p.lexer.consumeToken()
+
 	default:
-		return nil, fmt.Errorf("expected CREATE, DATABASES, or TABLES after SHOW, got %q", p.currentTokenString())
+		return nil, fmt.Errorf("expected ACCESS, CREATE, DATABASES, or TABLES after SHOW, got %q", p.currentTokenString())
 	}
 
 	stmt := &ShowStmt{