Pořadí funkce v sql
Příklady kódu
jak používat hodnost, funkce v sql
BY LOVE SINGH,
Here, name and id is the column name of the table tbltest.
SELECT
name,
RANK () OVER (
ORDER BY id DESC
) price_rank
FROM
tbltest;pořadí funkce v sql
ROW_NUMBER() -- 1,2,3,4,5 (different rank no. to same value)
RANK() -- 1,2,2,4,5 (same rank no. to same value but next rank is skipped)
DENSE_RANK() -- 1,2,2,3,4 (same rank no. to same value but no skip in rank no.)
RANKING FUNCTION NAME() OVER([PARTITION BY <COLUMN NAME>] ORDER BY
<COLUMN NAME> [ASC / DESC])
-- PARTITION BY ------> OPTIONAL (ON GROUP OF ROWS).
-- ORDER BY -------> MANADATORY CLAUSE.Související stránky
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