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[QODBC-Desktop] QODBC Function List
Posted by Juliet (QODBC Support) on 28 July 2009 09:29 AM
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QODBC Functions QODBC FunctionsThis is a list of all of the SQL functions supported by the QODBC Driver and their associated syntax. QODBC String FunctionsASCII ( string_exp ) Instruction: Returns the ASCII code value of the leftmost character of string_exp as integer. Example: SELECT {fn ASCII("Name")} AS "ASCII", "Name" FROM Customer Returns:
CHAR ( code ) Instruction: Returns the character that has the ASCII code value specified by code. The value of code should be between 0 and 255; otherwise, the return value is data source-dependent. Example: SELECT {fn CHAR(65)} + {fn CHAR(66)} AS "APlusB", "Name" FROM Customer Returns:
CONCAT ( string_exp1, string_exp2 ) Instruction: Returns a character string that is the result of concatenating string_exp2 to string_exp1. If the column represented by string_exp1 or string_exp2 contains a NULL value, a NULL value will be returned. Example: SELECT {fn CONCAT("BillAddressState", "BillAddressPostalCode")} AS "STZip", "Name" FROM Customer Returns:
DIFFERENCE ( string_exp1, string_exp2 ) Instruction: Returns an integer value that indicates the difference between the values returned by the SOUNDEX function for string_exp1 and string_exp2. Example: SELECT {fn DIFFERENCE("Name", 'Abercrombie, Kristy')} AS "Difference", "Name" FROM Customer Returns:
INSERT ( string_exp1, start, length, string_exp2 ) Instruction: Returns a character string where length characters have been deleted from the string_exp1 beginning at the start and where string_exp2 has been inserted into string_exp1, beginning at start. Example: SELECT {fn INSERT("Name", 3, 2, '*Inserted*')} AS "Inserted", "Name" FROM Customer Returns:
LCASE ( string_exp ) Instruction: Converts all uppercase characters in string_exp to lower case. Example: SELECT {fn LCASE("Name")} AS "LCase", "Name" FROM Customer Returns:
UCASE ( string_exp ) Instruction: Converts all lower case characters in string_exp to upper case. Example: SELECT {fn UCASE("Name")} AS "UCase", "Name" FROM Customer Returns:
LEFT ( string_exp, count ) Instruction: Returns the leftmost count of characters of string_exp . Example: SELECT {fn LEFT("Name", 5)} AS "Left5", "Name" FROM Customer Returns:
RIGHT ( string_exp, count ) Instruction: Returns the rightmost count of characters of string_exp . Example: SELECT {fn RIGHT(“Name”, 5)} AS "Right5", "Name" FROM Customer Returns:
LENGTH ( string_exp ) Instruction: Returns the number of characters in string_exp , excluding trailing blanks and the string termination character. Example: SELECT {fn LENGTH("Name")} AS "Length", "Name" FROM Customer Returns:
BIT_LENGTH ( string_exp ) Instruction: Returns the bit length of string_exp , excluding trailing blanks and the string termination character. Example: SELECT {fn BIT_LENGTH("Name")} AS "BitLength", "Name" FROM Customer Returns:
CHAR_LENGTH ( string_exp ) Instruction: Returns the number of chars in string_exp , excluding trailing blanks and the string termination character. Example: SELECT {fn CHAR_LENGTH("Name")} AS "CharLength", "Name" FROM Customer Returns:
CHARACTER_LENGTH ( string_exp ) Instruction: Returns the number of characters in string_exp , excluding trailing blanks and the string termination character. (Almost the same as LENGTH function) Example: SELECT {fn CHARACTER_LENGTH("Name")} AS "CharacterLength", "Name" FROM Customer Returns:
OCTET_LENGTH ( string_exp ) Instruction: Returns the octet length of string_exp , excluding trailing blanks and the string termination character. (Almost the same as LENGTH function) Example: SELECT {fn OCTET_LENGTH("Name")} AS "OctetLength", "Name" FROM Customer Returns:
LOCATE ( string_exp1, string_exp2[, start] ) Instruction: Returns the starting position of the first occurrence of string_exp1 within string_exp2 . The search for the first occurrence of string_exp1 begins with the first position in string_exp2 unless the optional argument, start is specified. If start is specified, the search begins with the character position indicated by the value of start . The first character position in string_exp2 is indicated by the value 1. If string_exp1 is not found within string_exp2 , the value 0 is returned. Example: SELECT {fn LOCATE('a', "Name", 2)} AS "LocationOfA", "Name" FROM Customer Returns:
LTRIM ( string_exp ) Instruction: Returns the characters of string_exp , with leading blanks removed. Example: SELECT {fn LTRIM("Name")} AS "LTrim", "Name" FROM Customer Returns:
RTRIM ( string_exp ) Instruction: Returns the characters of string_exp , with trailinging blanks removed. Example: SELECT {fn RTRIM("Name")} AS "RTrim", "Name" FROM Customer Returns:
REPEAT ( string_exp1, repeattimes ) Instruction: Returns the characters of string_exp1, with repeating it repeattimes. Example: SELECT {fn REPEAT("Name",2)} as "Repeat2","Name" FROM Customer Returns:
POSITION ( string_exp1, string_exp2 ) Instruction: Returns a integer value that shows the position where string_exp1 first begins in string_exp2 (including spaces) Example: SELECT {fn POSITION('a' IN "Name")} As "PositionOfA", "Name" FROM Customer Returns:
REPLACE ( string_exp1, string_exp2,string_exp3 ) Instruction: Returns the characters of string_exp3 which takes the place of string_exp2 value in column string_exp1 . Example: SELECT {fn REPLACE("NAME",'330 Main St','abc')} AS "Replace","Name" FROM Customer Returns:
SOUNDEX ( string_exp ) Instruction: Returns a character string representing the sound of the words in string_exp . Example: SELECT {fn SOUNDEX("Name")} AS "Soundex", "Name" FROM Customer Returns:
SPACE ( count ) Instruction: Returns a character string consisting of count spaces. Example: SELECT '[' + {fn SPACE(10)} + ']' AS "TenSpaces", "Name" FROM Customer Returns:
SUBSTRING ( string_exp, start, length ) Instruction: Returns a character string that is derived from string_exp beginning at the character position specified by start for length characters. Example: SELECT {fn SUBSTRING("Name", 2, 5)} AS "Middle5Characters", "Name" FROM Customer Returns:
QODBC Numeric FunctionsABS ( numeric_exp|float_exp|integer_exp ) Instruction: Returns the absolute value of numeric_exp . Example: SELECT "Name", {fn ABS(Balance)} AS "ABSBalance", "Balance" FROM Customer Returns:
ACOS ( float_exp ) Instruction: Returns the arccosine of float_exp as an angle, expressed in radians. Example: SELECT {fn ACOS({fn CONVERT(0, SQL_FLOAT)})} AS "ACOSValue", CompanyName AS "CompanyName" FROM Company Returns:
ASIN ( float_exp ) Instruction: Returns the arcsine of float_exp as an angle, expressed in radians. Example: SELECT {fn ASIN({fn CONVERT(0, SQL_FLOAT)})} AS "ASINValue", CompanyName AS "CompanyName" FROM Company Returns:
ATAN ( float_exp ) Instruction: Returns the arctangent of float_exp as an angle, expressed in radians. Example: SELECT {fn ATAN({fn CONVERT(1, SQL_FLOAT)})} AS "ATANValue", CompanyName AS “CompanyName” FROM Company Returns:
ATAN2 ( float_exp1, float_exp2 ) Instruction: Returns the arctangent of the x and y coordinates specified by float_exp1 and float_exp2 , respectively, as an angle, expressed in radians. Example: SELECT {fn ATAN2({fn CONVERT(1, SQL_FLOAT)}, {fn CONVERT(2, SQL_FLOAT)})} AS "ATAN2Value", CompanyName AS “CompanyName” FROM Company Returns:
COS ( float_exp ) Instruction: Returns the cosine of float_exp, where float_exp is an angle expressed in radians. Example: SELECT {fn COS({fn CONVERT(1, SQL_FLOAT)})} AS "COSValue", CompanyName AS “CompanyName” FROM Company Returns:
COT ( float_exp ) Instruction: Returns the cotangent of float_exp, where float_exp is an angle expressed in radians. Example: SELECT {fn COT({fn CONVERT(1, SQL_FLOAT)})} AS "COTValue", CompanyName AS “CompanyName” FROM Company Returns:
CEILING ( numeric_exp|float_exp|integer_exp ) Instruction: Returns the smallest integer greater than or equal to numeric_exp . Example: SELECT "Name", {fn CEILING("Balance")} AS "CeilingBalance", "Balance" FROM Customer Returns:
DEGREES ( numeric_exp|float_exp|integer_exp ) Instruction: Returns the number of degrees converted from numeric_exp radians. Example: SELECT {fn DEGREES(1)} AS "DegreesReturned", CompanyName AS “CompanyName” FROM Company Returns:
EXP ( float_exp ) Instruction: Returns the exponential value of float_exp . Example: SELECT {fn EXP({fn CONVERT(1, SQL_FLOAT)})} AS "ExpReturned", CompanyName AS “CompanyName” FROM Company Returns:
FLOOR (numeric_exp|float_exp|integer_exp) Instruction: Returns largest integer less than or equal to numeric_exp . Example: SELECT "Name", {fn FLOOR("Balance")} AS "FloorBalance", "Balance" FROM Customer Returns:
LOG ( float_exp ) Instruction: Returns the natural logarithm of float_exp . Example: SELECT {fn LOG({fn CONVERT(25, SQL_FLOAT)})} AS "LogReturned", CompanyName AS “CompanyName” FROM Company Returns:
LOG10 ( float_exp ) Instruction: Returns the base 10 logarithm of float_exp . Example: SELECT {fn LOG10({fn CONVERT(25, SQL_FLOAT)})} AS "Log10Returned", CompanyName AS “CompanyName” FROM Company Returns:
MOD ( integer_exp1, integer_exp2 ) Instruction: Returns the remainder (modulus) of integer_exp1 divided by integer_exp2 . Example: SELECT {fn MOD(27, 7)} AS "Mod7Returned", CompanyName AS “CompanyName” FROM Company Returns:
PI () Instruction: Returns the constant value of pi as a floating point value. Example: SELECT {fn PI()} AS "PI", CompanyName AS “CompanyName” FROM COMPANY Returns:
POWER ( numeric_exp|float_exp|integer_exp, integer_exp ) Instruction: Returns the value of numeric_exp to the power of integer_exp . Example: SELECT {fn POWER(4, 3)} AS "PowerValue", CompanyName AS "CompanyName" FROM COMPANY Returns:
RADIANS ( numeric_exp|float_exp|integer_exp ) Instruction: Returns the number of radians converted from numeric_exp degrees. Example: SELECT {fn RADIANS(57.29578)} AS "RadiansValue", CompanyName AS “CompanyName” FROM COMPANY Returns:
RAND ([ integer_exp|float_exp|numeric_exp ]) Instruction: Returns a random floating point value using integer_exp as optional seed value. Example: SELECT {fn RAND()} AS "RandValue" FROM COMPANY Returns:
ROUND ( numeric_exp|float_exp|integer_exp, integer_exp ) Instruction: Returns numeric_exp rounded to integer_exp places right of the decimal point. If integer_exp is negative, numeric_exp is rounded to | integer_exp | places to the left of the decimal point. Example: SELECT "Name", {fn ROUND(Balance, 1)} AS "RoundBalance", "Balance" FROM Customer Returns:
SIGN ( numeric_exp|float_exp|integer_exp ) Instruction: Returns an indicator or the sign of numeric_exp . If numeric_exp is less than zero, -1 is returned. If numeric_exp equals zero, 0 is returned. If numeric_exp is greater than zero, 1 is returned. Example: SELECT "Name", {fn SIGN(Balance)} AS "SignOfBalance", "Balance" FROM Customer Returns:
SIN ( float_exp ) Instruction: Returns the sine of float_exp, where float_exp is an angle expressed in radians. Example: SELECT {fn SIN({fn CONVERT(1, SQL_FLOAT)})} AS "SINValue", CompanyName AS “CompanyName” FROM Company Returns:
SQRT ( float_exp ) Instruction: Returns the square root of float_exp . Example: SELECT {fn SQRT({fn CONVERT(47, SQL_FLOAT)})} AS "SQRTValue", CompanyName AS “CompanyName” FROM Company Returns:
TAN ( float_exp ) Instruction: Returns the tangent of float_exp, where float_exp is an angle expressed in radians. Example: SELECT {fn TAN({fn CONVERT(1, SQL_FLOAT)})} AS "TANValue", CompanyName AS “CompanyName” FROM Company Returns:
TRUNCATE ( numeric_exp|float_exp|numeric_exp, integer_exp ) Instruction: Returns numeric_exp truncated to integer_exp places right of the decimal point. If integer_exp is negative, numeric_exp is truncated to | integer_exp | places to the left of the decimal point. Example: SELECT "Name", {fn TRUNCATE(Balance, 1)} AS "TruncateBalance", "Balance" FROM Customer Returns:
QODBC Time and Date FunctionsCURDATE () Instruction: Returns the current date as a date value. Example: SELECT {fn CURDATE()} AS "CurDate" FROM Company Returns:
CURRENT_DATE () Instruction: Returns the current date as a date value. Example: SELECT {fn CURDATE_DATE()} AS "CurrentDate" FROM Company Returns:
CURTIME() Instruction: Returns the local time as a time value. Example: SELECT {fn CURTIME()} AS "CurTime" FROM Company Returns:
CURRENT_ TIME() Instruction: Returns the current time as a time value. Example : SELECT {fn CURRENT_TIME()} AS "CurrentTime" FROM Company Returns:
CURRENT_ TIMESTAMP() Instruction: Returns the current date and time as a timestamp value. Example: SELECT {fn CURRENT_TIMESTAMP()} AS "CurrentTimeStamp" FROM Company Returns:
DAYNAME ( date_exp ) Instruction: Returns a character string containing the data source-specific name of the day (for example, Sunday, through Saturday or Sun. through Sat. for a data source that uses English) for the day portion of date_exp . Example: SELECT {fn DAYNAME({fn CURDATE()})} AS "CurDayName", CompanyName AS "CompanyName" FROM Company Returns:
DAYOFMONTH ( date_exp| string_exp|timestamp_exp ) Instruction: Returns the day of the month in date_exp as an integer value in the range of 1-31. Example: SELECT {fn DAYOFMONTH({fn CURDATE()})} AS "CurDayOfMonth" FROM Company Returns:
DAYOFWEEK ( date_exp ) Instruction: Returns the day to the week in date_exp as an integer value in the range of 1-7, where 1 represents Sunday. Example: SELECT {fn DAYOFWEEK({fn CURDATE()})} AS "CurDayOfWeek" FROM Company Returns:
DAYOFYEAR ( date_exp ) Instruction: Returns the day of the year in date_exp as an integer value in the range of 1-366. Example: SELECT {fn DAYOFYEAR({fn CURDATE()})} AS "CurDayOfYear" FROM Company Returns:
EXTRACT( date_exp|timestamp_exp ) Instruction: Returns the part of date_exp or timestamp_exp . Example: SELECT {fn EXTRACT(YEAR FROM{fn CURRENT_DATE()})} AS "Year",{fn EXTRACT(MONTH FROM{fn CURRENT_DATE()})} AS "Month",{fn EXTRACT(DAY FROM{fn CURRENT_DATE()})} AS "Day",CompanyName as "CompanyName" FROM Company Returns:
HOUR ( time_exp| string_exp|timestamp_exp ) Instruction: Returns the hour in time_exp or char_exp or timestamp_exp as an integer value in the range of 0-23. Example: SELECT {fn HOUR({fn CURTIME()})} AS "CurHour" FROM Company Returns:
MINUTE ( time_exp| string_exp|timestamp_exp ) Instruction: Returns the minute in time_exp as an integer value in the range of 0-59. Example: SELECT {fn MINUTE({fn CURTIME()})} AS "CurMinute" FROM Company Returns:
MONTH ( date_exp| string_exp|timestamp_exp ) Instruction: Returns the month in date_exp as an integer value in the range of 1-12. Example: SELECT {fn MONTH({fn CURDATE()})} AS "CurMonth" FROM Company Returns:
MONTHNAME ( date_exp| string_exp|timestamp_exp ) Instruction: Returns a character string containing the data source-specific name of the month (for example, January through December or Jan. through Dec. for a data source that uses English) for the month portion of date_exp . Example: SELECT {fn MONTHNAME({fn CURDATE()})} AS "CurMonthName” , CompanyName AS "CompanyName" FROM Company Returns:
NOW () Instruction: Returns the current date and time as a timestamp value. Example: SELECT {fn NOW()} AS "Now" FROM Company Returns:
QUARTER ( date_exp| string_exp|timestamp_exp ) Instruction: Returns the quarter in the date_exp as an integer value in the range of 1-4, where 1 represents January 1 through March 31. Example: SELECT {fn QUARTER({fn CURDATE()})} AS "CurQuarter", CompanyName AS "CompanyName" FROM Company Returns:
SECOND ( time_exp| string_exp|timestamp_exp ) Instruction: Returns the second in time_exp as an integer value in the range of 0-59. Example: SELECT {fn SECOND({fn CURTIME()})} AS "CurSecond" FROM Company Returns:
TIMESTAMPADD ( interval, integer_exp, timestamp_exp ) Instruction: Returns the timestamp calculated by adding integer_exp intervals of type interval to timestamp_exp . Valid values of interval are the following keywords: SQL_TSI_FRAC_SECOND, SQL_TSI_HOUR, SQL_TSI_SECOND, SQL_TSI_DAY, SQL_TSI_MINUTE, SQL_TSI_WEEK, SQL_TSI_MONTH, SQL_TSI_QUARTER, SQL_TSI_YEAR where fractional seconds are expressed in billionths of a second. Notes: If timestamp_exp is a time value and interval specifies days, weeks, months, quarters, or years, the date portion of timestamp_exp is set to the current date before calculating the resulting timestamp. If timestamp_exp is a date value and interval specifies fractional seconds, seconds, minutes, or hours, the time portion of timestamp_exp is set to 0 before calculating the resulting timestamp. Example: SELECT Name, {fn TIMESTAMPADD(SQL_TSI_YEAR, 1, HiredDate)} AS "Anniversary" FROM Employee Returns:
TIMESTAMPDIFF ( interval, timestamp_exp1, timestamp_exp2 ) Instruction: Returns the integer number of intervals of type interval by which timestamp_exp2 is greater than timestamp_exp1 . Valid values of interval are the following keywords: SQL_TSI_FRAC_SECOND, SQL_TSI_HOUR, SQL_TSI_SECOND, SQL_TSI_DAY, SQL_TSI_MINUTE, SQL_TSI_WEEK, SQL_TSI_MONTH, SQL_TSI_QUARTER, SQL_TSI_YEAR where fractional seconds are expressed in billionths of a second. Note: If either timestamp expression is a time value and interval specifies days, weeks, months, quarters, or years, the date portion of that timestamp is set to the current date before calculating the difference between the timestamps. If either timestamp expression is a date value and interval specifies fractional seconds, seconds, minutes, or hours, the time portion of that timestamp is set to 0 before calculating the difference between the timestamps. Example: SELECT Name, {fn TIMESTAMPDIFF(SQL_TSI_YEAR, {fn CURDATE()}, HiredDate)} AS "YearsWorked” FROM Employee Returns:
WEEK ( date_exp ) Instruction: Returns the week of the year in date_exp as an integer value in the range of 1-53. Example: SELECT {fn WEEK({fn CURDATE()})} AS "CurWeek" FROM Company Returns:
YEAR ( date_exp|string_exp|timestamp_exp ) Instruction: Returns the year in date_exp as an integer value. Example: SELECT {fn YEAR({fn CURDATE()})} AS "CurYear" FROM Company Returns:
QODBC System FunctionsDATABASE () Instruction: Returns the name of the database in use at the time this function is called. Example: SELECT {fn DATABASE()} AS "OpenDatabase" FROM Company Returns:
IFNULL ( exp, value ) Instruction: If exp is null, value is returned. If exp is not null, exp is returned. The possible data type(s) of value must be compatible with the data type of exp . Example: Select Name, {fn IFNULL(Fax, 'Missing Fax')} as "FixedFax" from Employee Returns:
PARENT( string_exp ) Instruction: Returns the characters before the colon it finds in string_exp Example : SELECT {fn PARENT(FullName)} AS “ParentValue”,FullName FROM Account CALLDIRECT Returns:
CHILD ( string_exp ) Instruction: Returns the characters after the colon it finds in string_exp Example: SELECT {fn CHILD(FullName)} AS “ChildValue”,FullName FROM Account CALLDIRECT Returns:
CONVERT (integer_exp, sqltype_exp) Instruction: Returns the slqtype value which is converted from an integer value and can be used in numeric functions. Example: SELECT {fn CONVERT(21,SQL_FLOAT)} AS "ConverValue", CompanyName AS "CompanyName" FROM Company Returns:
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