Caché Transact-SQL (TSQL) Migration Guide - InterSystems ...

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TSQL FunctionsWhen expression is a time value string, such as '1:35PM' and datatype is datetime or timestamp,the time is converted to a 24-hour clock, the AM or PM suffix is removed, a missingseconds interval is filled in with zeros, and the default date value of '1900–01–01' is supplied.Thus '1:35PM' is converted to '1900–01–01 13:35:00'.See CONVERT.4.1.4 CEILINGCEILING(num)Returns the closest integer greater than or equal to num. Thus 123.99 returns 124, –123.99returns –123.4.1.5 CHARCHAR(num)Returns the character corresponding to the ASCII value num.4.1.6 CHARINDEXCHARINDEX(seekstring,target[,startpoint])Returns the position in target (counting from 1) corresponding to first character of the firstoccurrence of seekstring. You can use the optional startpoint integer to specify where to beginthe search. The return value counts from the beginning of target, regardless of the startpoint.If startpoint is not specified, specified as 0, 1, or as a negative number, target is searchedfrom the beginning. CHARINDEX returns 0 if seekstring is not found.4.1.7 CONVERTCONVERT(datatype,expression[,style])Returns the expression converted to the specified datatype.When expression is a date value string, such as '2004–11–23' and datatype is datetime ortimestamp, a time value of '00:00:00' is supplied.When expression is a time value string, such as '1:35PM' and datatype is datetime or timestamp,the time is converted to a 24-hour clock, the AM or PM suffix is removed, a missing28 Caché Transact-SQL (TSQL) Migration Guide
seconds interval is filled in with zeros, and the default date value of '1900–01–01' is supplied.Thus '1:35PM' is converted to '1900–01–01 13:35:00'.The optional style argument is used to specify a date/time format when converting a datetimeor timestamp value to a string. By specifying various style codes you can return a dates andtimes in a variety of different formats. The available style codes are 0 through 14 (100 through114), 20 & 21 (120 & 121), 126, 130, and 131. The default style is 120:yyyy-mm-dd hh:mm:ssSee CAST.4.1.8 CURRENT_TIMESTAMPCURRENT_TIMESTAMPReturns the current local date and time in the following format:yyyy-mm-dd hh:mm:ssTime is specified using a 24-hour clock, Fractional seconds are not returned.Note that no parentheses are used with this function.4.1.9 CURRENT_USERCURRENT_USERReturns the name of the current user.Note that no parentheses are used with this function.4.1.10 DATALENGTHDATALENGTH(expression)Supported FunctionsReturns an integer specifying the number of bytes used to represent expression. Thus 'fred'returns 4, and +007.500 returns 3.Caché Transact-SQL (TSQL) Migration Guide 29
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Page 7 and 8: 1OverviewCaché TSQL is an implemen
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Page 14 and 15: Caché TSQL ConstructsDECLARE C CUR
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Page 20 and 21: TSQL Commands3.1.2 DROP TABLEDelete
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Page 24 and 25: TSQL CommandsThe WAITFOR command is
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Page 38 and 39: TSQL Functionsyyyy, yyqq, qmm, mdy,
Page 40 and 41: TSQL Functions4.1.20 ISNUMERICISNUM
Page 42 and 43: TSQL Functions4.1.30 POWERPOWER(num
Page 44 and 45: TSQL Functions4.1.41 SPACESPACE(num
Page 46 and 47: TSQL Functions4.1.50 YEARYEAR(date)
Page 48 and 49: TSQL Variables5.2 Special Variables
Page 51 and 52: 6Using the TSQL Shell6.1 Getting St
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