![]() Don't worry about 1000, it only assures that we will have the rest of the string, not any less. Consider the following two ways to convert a datetime varchar string into a date field: SELECT convert (date, ' 21:12:00', 20) - Only date is needed SELECT cast (' 21:12:00' as date) - Only date is needed Both return what I expect: The date excluding the time, in as a date datatype. If the day of week part may have variable length. ![]() Example This example converts a string to a datetime value. The most upvoted answer here are guravgs and Taptronics.However, theres one contribution Id like to make. Use CONVERT or TRYCONVERT to perform this operation. Or even better substring(myDatetimeString, charindex(' ', myDatetimeString), 1000) Converting a string to a datetime value is a common requirement. So all you need to do is cut out the Fri part: substring(myDatetimestring, 5, 1000) It's your format except it doesn't include unnecessary in this case day of week information. One of the first considerations is the actual date/time value needed. ![]() There you can find, that the closest date format is indicated by 100: 0 100 mon dd yyyy hh:miAM/PM Default SQL Server provides a number of options you can use for formatting a date/time string in SQL queries and stored procedures either from an input file (Excel, CSV, etc.) or a date column (datetime, datetime2, smalldatetime, etc.) from a table. >= CONVERT(datetime, ' 00:00:00', 120)ĪND < CONVERT(datetime, ' 00:00:00', 120) īeing explicit about types is a very good habit to get into, particularly when dealing with dates and times.When dealing with non-standard date formats, I usually lookup CONVERT function in SQL Server, as it io very "elastic": you can provide various formats to it, so it recognizes them appropriately. That said, there are good reasons (as Aaron points out in his answer) to use a half-open range instead of BETWEEN (I use style 120 below just for variety): SELECT COUNT(*) Being explicit about the data type and string style results in the following: SELECT COUNT(*) To convert a datetime to a string, you use the CONVERT () function as follows: CONVERT (VARCHAR, datetime ,style) Code language: SQL (Structured Query Language) (sql) In this syntax: VARCHAR is the first argument that represents the string type. (And, of course, I agree with the comments that dates should be stored in DATE data types in the database. An undelimited string of integers is assumed to be Year-Month-Day order. The question uses strings in ODBC canonical (with milliseconds) format (style 121). 3 Answers Sorted by: 5 I understand your problem to be how to successfully convert the string into a DATE value. When working with strings and date/time types, CONVERT is to be preferred because it provides a style parameter to explicitly define the string format. ![]() SQL Server provides the CAST and CONVERT functions for this purpose. In my view, the neatest way to avoid these types of issues is to be explicit about types. Without explicit information about the format of the strings, SQL Server follows its convoluted rules for interpreting strings as datetimes. SELECT CategoryId, Convert (datetime, '', 103), Content, GetDate () FROM Item i JOIN Category c ON i.CategoryId c.Id JOIN Division d ON d.Id c.DivisionId WHERE Date Convert (datetime, '', 103) AND d.Id '142aaddf-5b63-4d53-a331-8eba9b0556c4' I get the correct date being: 00:00:00.000. To compare those literals with the datetime column, SQL Server attempts to convert the strings to datetime types, according to the rules of data type precedence. The literals you are providing for comparison to the Created column are strings. I do not understand why the data is being converted from varchar to datetime when 'Created' is set to datetime Converting a string to a datetime value is a common requirement. ![]()
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