> diff --git a/extra/lempar.c b/extra/lempar.c
> index 00fd79c..d043e39 100644
> --- a/extra/lempar.c
> +++ b/extra/lempar.c
> @@ -336,8 +336,8 @@ void *ParseAlloc(void *(*mallocProc)(YYMALLOCARGTYPE)){
>    if( pParser ){
>  #ifdef YYTRACKMAXSTACKDEPTH
>      pParser->yyhwm = 0;
> -    pParser->is_fallback_failed = false;
>  #endif
> +    pParser->is_fallback_failed = false;

Could you please explain this code movement?

> +++ b/test/sql-tap/start-transaction.test.lua
> @@ -0,0 +1,266 @@
> +#!/usr/bin/env tarantool
> +test = require("sqltester")
> +test:plan(21)
> +
> +test:do_catchsql_test(
> +	"start-transaction-1.0",
> +	[[
> +		CREATE TABLE IF NOT EXISTS t(id int PRIMARY KEY);
> +		DELETE FROM t;
> +		BEGIN;
> +			INSERT INTO t VALUES (1);
> +			INSERT INTO t VALUES (2);
> +		COMMIT;
> +	]], {
> +		-- <start-transaction-1.0>
> +		1, "near \"BEGIN\": syntax error"
> +		-- <start-transaction-1.0>
> +	})
> +
> +test:do_execsql_test(
> +	"start-transaction-1.1",
> +	[[
> +		SELECT * FROM t;
> +	]], {
> +		-- <start-transaction-1.1>
> +
> +		-- <start-transaction-1.1>
> +	})
> +
> +test:do_catchsql_test(
> +	"start-transaction-1.2",
> +	[[
> +		CREATE TABLE IF NOT EXISTS t(id int primary key);
> +		delete from t;

We write SQL queries in upper-case. Fix it in other places too.