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1.¾«È·ËÑË÷,¾ÍÊǰÑÓû§ÊäÈëµÄ¸÷¸ö´ÊÓïµ±³ÉÒ»¸öÕûÌå,²»·Ö¸îËÑË÷.
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1CREATE FUNCTION dbo.WordCount
2
3(@Word VARCHAR(15),
4
5 @Phrase VARCHAR(1000))
6
7RETURNS SMALLINT
8
9AS
10
11BEGIN
12
13/**//* Èç¹û@Word »òÕß@Phrase Ϊ¿Õ·µ»Ø 0 */
14
15IF @Word IS NULL OR @Phrase IS NULL RETURN 0
16
17/**//* @BiggerWord ±È@Word³¤Ò»¸ö×Ö·û */
18
19DECLARE @BiggerWord VARCHAR(21)
20
21SELECT @BiggerWord = @Word + 'x'
22
23/**//*ÔÚ @PhraseÓÃ@BiggerWordÌæ»»@Word */
24
25DECLARE @BiggerPhrase VARCHAR(2000)
26
27SELECT @BiggerPhrase = REPLACE (@Phrase, @Word, @BiggerWord)
28
29/**//* Ïà¼õ½á¹û¾ÍÊdzöÏֵĴÎÊýÁË */
30
31RETURN LEN(@BiggerPhrase) - LEN(@Phrase)
32
33END
34
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