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24 paź 2014 · I would like to convert a datetime field to varchar so I can show a blank or a message when the date is NULL. This is what I have so far: select isnull(us.Date,0) as USDate, isnull(au.Date,0) as AUDate from ustable us left join autable au on us.column=au.column
21 mar 2013 · In this case you can't just set a DATETIME to an empty string. Try it: SELECT CONVERT(DATETIME, ''); One workaround is to present your date as a string: CASE WHEN CONVERT(DATE, CreatedDate) = '1900-01-01' -- to account for accidental time THEN '' ELSE CONVERT(CHAR(10), CreatedDate, 120) + ' ' + CONVERT(CHAR(8), CreatedDate, 108) END
17 lis 2015 · You can't get an empty string because you're returning the DATE value type from ISNULL. Per the docs, ISNULL. Returns the same type as check_expression. If a literal NULL is provided as check_expression, returns the datatype of the replacement_value.
21 lip 2018 · To convert a date to a string, you use the CAST() function as follows: CAST(date AS string) Code language: SQL (Structured Query Language) (sql) In this syntax: The date can be a literal or an expression that evaluates to a DATE value. The string can be any character string data type such as VARCHAR or TEXT. The CAST() function returns a string ...
SQL Server comes with the following data types for storing a date or a date/time value in the database: DATE - format YYYY-MM-DD. DATETIME - format: YYYY-MM-DD HH:MI:SS. SMALLDATETIME - format: YYYY-MM-DD HH:MI:SS. TIMESTAMP - format: a unique number.
20 sie 2012 · I need to display date and time in desired format in Unix/ Linux. My desired format is: dd/mm/yyyy hh:mm:ss:ms in Unix or Linux. I got close using the following command: echo $(date +%x_%r) This returns: 08/20/2012_02:26:14 PM.
String-valued functions return NULL if the length of the result would be greater than the value of the max_allowed_packet system variable. See Section 7.1.1, “Configuring the Server”.. For functions that operate on string positions, the first position is numbered 1. For functions that take length arguments, noninteger arguments are rounded to the nearest integer.
