Question

我有一个包含大写行的数据库，我需要使用TSQL中的存储过程转换为句子大小写。例如：原始字符串：

THIS IS THE FIRST SENTENCE. THIS IS THE SECOND SENTENCE!     THIS IS THE THIRD SENTENCE?  THIS IS THE FOURTH SENTENCE.

转换字符串：

This is the first sentence. This is the second sentence!     This is the third sentence?  This is the fourth sentence.

Answer 1

好吧，在CLR函数或表示层中可以更好地处理这种事情，但这里只有一种方法可以使用tsql：

<强>更新
我已经改进了我的代码以检测以数字开头的句子，以便忽略它们（即如果句子是4th sentence，t之后的4仍然是小写的。）

DECLARE @OriginalString varchar(200) = 'THIS IS THE FIRST SENTENCE. THIS IS THE SECOND SENTENCE!     THIS IS THE THIRD SENTENCE?  4TH SENTENCE.'

DECLARE @TargetString varchar(200),
        @Index int = 2,
        @CurrentChar CHAR(1),
        @FoundBeginingOfSentence bit = 0,
        @BeginingOfSentenceIsANumber bit = 0

SET @TargetString = LEFT(@OriginalString, 1) + LOWER(RIGHT(@OriginalString, LEN(@OriginalString)-1))


WHILE @Index < LEN(@OriginalString)
BEGIN

    SET @CurrentChar = SUBSTRING(@OriginalString, @Index, 1)
    SET @Index = @Index + 1
    IF @CurrentChar IN('.', '!', '?') 
    BEGIN
         WHILE @FoundBeginingOfSentence = 0 AND @Index < LEN(@OriginalString)
         BEGIN
             SET @CurrentChar = SUBSTRING(@OriginalString, @Index, 1)
             IF PATINDEX('[0-9]', @CurrentChar) = 1 
             BEGIN
                 SELECT @FoundBeginingOfSentence = 1,
                        @BeginingOfSentenceIsANumber = 1
             END
             IF @BeginingOfSentenceIsANumber = 0 
             BEGIN
                 IF PATINDEX('[A-Z]', @CurrentChar) = 1 BEGIN
                     SET @FoundBeginingOfSentence = 1
                     SET @TargetString = LEFT(@TargetString, @Index-1) + UPPER(SUBSTRING(@TargetString, @Index, 1)) + SUBSTRING(@TargetString, @Index+1, LEN(@TargetString))
                 END
                 SET @Index = @Index + 1
             END
         END
    END

    SELECT @FoundBeginingOfSentence = 0,
           @BeginingOfSentenceIsANumber = 0 
END

See fiddle here

注意：您可以将所需的任何句子分隔符添加到第一个if语句中。

使用TSQL存储过程将大写句子的字符串转换为句子

1 个答案: