Simplify tpc-ds q34, q73 a bit to help an optimizer

[zverevgeny]

No description provided.

[github-actions]

⚪ 2024-08-18 15:13:00 UTC Pre-commit check for f6a4c98 has started.
⚪ 2024-08-18 15:15:21 UTC Check linux-x86_64-release-clang14 is running...
🟢 2024-08-18 15:17:46 UTC Build successful.

[github-actions]

⚪ 2024-08-18 15:13:22 UTC Pre-commit check for f6a4c98 has started.
⚪ 2024-08-18 15:15:39 UTC Check linux-x86_64-release-asan is running...
🟢 2024-08-18 15:22:30 UTC Tests successful.

Test history | Ya make output

TESTS	PASSED	ERRORS	FAILED	SKIPPED	MUTED?
612	610	0	0	2	0

🟢 2024-08-18 15:22:39 UTC Build successful.
🟢 2024-08-18 15:22:56 UTC ydbd size 5.5 GiB changed* by -96 Bytes, which is <= 0 Bytes vs main: OK

ydbd size dash	main: b524a82	merge: f6a4c98	diff	diff %
ydbd size	5 879 951 088 Bytes	5 879 950 992 Bytes	-96 Bytes	-0.000%
ydbd stripped size	1 477 322 352 Bytes	1 477 322 288 Bytes	-64 Bytes	-0.000%

^{*please be aware that the difference is based on comparing your commit and the last completed build from the post-commit, check comparation}

[github-actions]

⚪ 2024-08-18 15:13:22 UTC Pre-commit check for f6a4c98 has started.
⚪ 2024-08-18 15:15:40 UTC Check linux-x86_64-relwithdebinfo is running...
🟢 2024-08-18 15:22:08 UTC Tests successful.

Test history | Ya make output

TESTS	PASSED	ERRORS	FAILED	SKIPPED	MUTED?
628	626	0	0	2	0

🟢 2024-08-18 15:22:16 UTC Build successful.
🟢 2024-08-18 15:22:35 UTC ydbd size 8.1 GiB changed* by -32 Bytes, which is <= 0 Bytes vs main: OK

ydbd size dash	main: b524a82	merge: f6a4c98	diff	diff %
ydbd size	8 736 640 040 Bytes	8 736 640 008 Bytes	-32 Bytes	-0.000%
ydbd stripped size	475 548 424 Bytes	475 548 424 Bytes	0 Bytes	0.000%

^{*please be aware that the difference is based on comparing your commit and the last completed build from the post-commit, check comparation}