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SQL TOP, RANK, ROW_NUMBER ,DENSE_RANK Functions

To use  SQL TOP, RANK,  ROW_NUMBER ,DENSE_RANK Functions  you can see below image. Select top 5 records from table. In below query We used SQL TOP, RANK,  ROW_NUMBER ,DENSE_RANK .You can check this with your table.

How to find distinct from number of list in string

How to find distinct from number of list in string in SQL Solution: SELECT LTRIM(H,',') OUTPUT FROM (SELECT sys_connect_by_path(K,',') H, L val FROM (SELECT K, ROW_NUMBER() OVER (ORDER BY K) L FROM (SELECT UNIQUE TO_NUMBER(REPLACE(SUBSTR(G,1,INSTR(G,',',1)),',','')) K FROM (SELECT B, J, A, (LTRIM(SUBSTR(A,B,J),',')) G FROM ( SELECT DISTINCT b, LEAD(b)over (order by b ASC) j, A FROM (SELECT instr(a,',',level)b, A FROM (SELECT ('1,2,0,2,432,445,3,3,-1,10099,-2,0.32,0.3432,.3432,4,4,5,6,0.32,-2,432,32,21029,10099,3209839') ||',' a FROM dual ) CONNECT BY level <=LENGTH(A)+1 ORDER BY b ) ) WHERE B<>J ORDER BY B ) ORDER BY 1 ) ORDER BY K ) WHERE connect_by_isleaf=1 START WITH L =1 CONNECT BY L = prior L+1 );