大约有 42,000 项符合查询结果(耗时:0.0149秒) [XML]

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Remove all spaces from a string in SQL Server

... Simply replace it; SELECT REPLACE(fld_or_variable, ' ', '') Edit: Just to clarify; its a global replace, there is no need to trim() or worry about multiple spaces for either char or varchar: create table #t ( c char(8), v varchar(8))...
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Is SQL or even TSQL Turing Complete?

...(0); -- Initialization of temporary variables DECLARE @CodeLength INT = (SELECT COUNT(*) FROM @CodeTable); DECLARE @CodeIndex INT = 0; DECLARE @Pointer INT = 1; DECLARE @InputIndex INT = 0; DECLARE @Command CHAR(1); DECLARE @Depth INT; -- Main calculation cycle WHILE @CodeIndex < @...
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What's the difference between VARCHAR and CHAR?

...CHAR(10), Street VARCHAR(10)); Insert into temp values('Pune','Oxford'); select length(city), length(street) from temp; Output will be length(City) Length(street) 10 6 Conclusion: To use storage space efficiently must use VARCHAR Instead CHAR if variable length is ...
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Pad a string with leading zeros so it's 3 characters long in SQL Server 2008

... If the field is already a string, this will work SELECT RIGHT('000'+ISNULL(field,''),3) If you want nulls to show as '000' It might be an integer -- then you would want SELECT RIGHT('000'+CAST(field AS VARCHAR(3)),3) As required by the question this answer only w...
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Formatting Numbers by padding with leading zeros in SQL Server

... Change the number 6 to whatever your total length needs to be: SELECT REPLICATE('0',6-LEN(EmployeeId)) + EmployeeId If the column is an INT, you can use RTRIM to implicitly convert it to a VARCHAR SELECT REPLICATE('0',6-LEN(RTRIM(EmployeeId))) + RTRIM(EmployeeId) And the code to re...
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How to convert int to char with leading zeros?

... Try this: select right('00000' + cast(Your_Field as varchar(5)), 5) It will get the result in 5 digits, ex: 00001,...., 01234 share | ...
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MySQL - How to select data by string length

... select LENGTH('Ö'); results 2!! András Szepesházi's answer is the correct one! – fubo Oct 24 '13 at 13:59 ...
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How do you create a random string that's suitable for a session ID in PostgreSQL?

...sion verification using PostgreSQL. I know I can get a random number with SELECT random() , so I tried SELECT md5(random()) , but that doesn't work. How can I do this? ...
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How to round an average to 2 decimal places in PostgreSQL?

... round that takes a precision is only available for numeric. regress=> SELECT round( float8 '3.1415927', 2 ); ERROR: function round(double precision, integer) does not exist regress=> \df *round* List of functions Schema | Name | Result data type | Argument...
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How to print VARCHAR(MAX) using Print Statement?

...ent. It works well in combination with the SQL Server Management Studio. SELECT CAST('<root><![CDATA[' + @MyLongString + ']]></root>' AS XML) You can click on the returned XML to expand it in the built-in XML viewer. There is a pretty generous client side limit on the displaye...