Difference between TESTCYCL and RUN table results

I am new to ALM and tried really hard to find an answer to the following questions in the forum. But I couldn't

find one and I got confused about the following. Can anyone can please help me out?

1. If I have to get the number of test cases for each execution status, which of the below queries should I use?

SELECT TC_STATUS, COUNT(TC_TEST_ID)

FROM TESTCYCL

GROUP BY TC_STATUS

SELECT RN_STATUS, COUNT(RN_RUN_ID)

FROM RUN

GROUP BY RN_STATUS

2. If I have to find how many times each test case was executed, which of the below queries should I use?

SELECT DISTINCT TC_TEST_ID, COUNT(TC_TEST_ID)

FROM TESTCYCL

GROUP BY TC_TEST_ID 

SELECT RN_TEST_ID, COUNT(RN_RUN_ID)

FROM RUN

GROUP BY RN_TEST_ID 

If none of the above queries make sense, can you please direct me to the right post that I may have missed?

Thanks in advance!