SQL Server ->> 斐波那契数列（Fibonacci sequence）

 斐波那契数列（Fibonacci sequence）的T-SQL实现

;WITH T AS (
SELECT 1 AS NUM, CAST(1 AS BIGINT) AS curr, CAST(NULL AS BIGINT) AS prv
UNION ALL
SELECT curr.NUM + 1 AS NUM, CAST(CASE WHEN prv IS NULL THEN curr ELSE curr + prv END AS BIGINT) AS curr, CAST(curr AS BIGINT) AS prv
FROM T curr
WHERE CAST(CASE WHEN prv IS NULL THEN curr + 1 ELSE curr + prv END AS BIGINT) <= CAST(POWER(2,16) AS BIGINT) * CAST(POWER(2,16) AS BIGINT)/2
)

SELECT curr FROM T