chore: 恢复旧布局基线（迁移改动丢失后重建，apps/packages 布局暂存）

server/internal/db/sqlparse_test.go

@@ -0,0 +1,57 @@
+package db
+
+import (
+	"strings"
+	"testing"
+)
+
+func TestSplitStatements(t *testing.T) {
+	cases := []struct {
+		in   string
+		want []string
+	}{
+		{"SELECT 1", []string{"SELECT 1"}},
+		{"SELECT 1; SELECT 2;", []string{"SELECT 1", "SELECT 2"}},
+		{"SELECT ';'; SELECT 2", []string{"SELECT ';'", "SELECT 2"}},
+		{"SELECT 1; -- c;mt\nSELECT 2", []string{"SELECT 1", "-- c;mt\nSELECT 2"}},
+		{"/* a;b */ SELECT 1; SELECT 2", []string{"/* a;b */ SELECT 1", "SELECT 2"}},
+		{`SELECT "a;b"; SELECT 2`, []string{`SELECT "a;b"`, "SELECT 2"}},
+		{";;", nil},
+		{"", nil},
+	}
+	for _, tc := range cases {
+		got := SplitStatements(tc.in)
+		if len(got) != len(tc.want) {
+			t.Fatalf("SplitStatements(%q) = %#v, want %#v", tc.in, got, tc.want)
+		}
+		for i := range got {
+			if got[i] != tc.want[i] {
+				t.Fatalf("SplitStatements(%q)[%d] = %q, want %q", tc.in, i, got[i], tc.want[i])
+			}
+		}
+	}
+}
+
+func TestStripComments(t *testing.T) {
+	cases := []struct {
+		in      string
+		has     string // 结果应包含(大小写敏感原文)
+		missing string // 结果不应包含
+	}{
+		{"SELECT 1 -- WHERE x", "SELECT 1", "WHERE x"},
+		{"UPDATE t SET x=1 # note\nWHERE id=1", "WHERE id=1", "note"},
+		{"SELECT /* hint */ 1", "SELECT", "hint"},
+		{"SELECT /*!50000 DROP TABLE t*/", "DROP TABLE t", "/*!"},
+		{"SELECT 'DROP TABLE x'", "SELECT", "DROP TABLE x"},
+		{`SELECT "col;drop" FROM t`, "FROM t", "col;drop"},
+	}
+	for _, tc := range cases {
+		got := StripComments(tc.in)
+		if tc.has != "" && !strings.Contains(got, tc.has) {
+			t.Fatalf("StripComments(%q) = %q, 应包含 %q", tc.in, got, tc.has)
+		}
+		if tc.missing != "" && strings.Contains(got, tc.missing) {
+			t.Fatalf("StripComments(%q) = %q, 不应包含 %q", tc.in, got, tc.missing)
+		}
+	}
+}