Function BenchmarkParseError

pkg/sql/parser/pipeline_bench_test.go:69–100

BenchmarkParseError benchmarks error handling performance for invalid SQL.

(b *testing.B)

// BenchmarkParseError benchmarks error handling performance for invalid SQL.
func BenchmarkParseError(b *testing.B) {
	queries := map[string]string{
		"missing_from":      "SELECT * WHERE x = 1",
		"missing_table":     "SELECT * FROM",
		"bad_syntax":        "SELECTT * FROM users",
		"incomplete_insert": "INSERT INTO users",
		"trailing_comma":    "SELECT a, b, FROM t",
		"unmatched_paren":   "SELECT (a + b FROM t",
		"empty":             "",
	}

	for name, sql := range queries {
		b.Run(name, func(b *testing.B) {
			b.ReportAllocs()
			sqlBytes := []byte(sql)

			b.ResetTimer()
			for i := 0; i < b.N; i++ {
				tkz := tokenizer.GetTokenizer()
				tokens, err := tkz.Tokenize(sqlBytes)
				tokenizer.PutTokenizer(tkz)
				if err != nil {
					continue // tokenizer error path
				}

				p := NewParser()
				_, _ = p.ParseFromModelTokensWithPositions(tokens)
				p.Release()
			}
		})
	}
}