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问题		答案
Asc 开始学习		Returns the ASCII value for the specific character
Chr 开始学习		Returns the character for the specified ASCII number code
Concat with & 开始学习		Adds two or more strings together
CurDir 开始学习		Returns the full path for a specified drive
Format 开始学习		Formats a value with the specified format
InStr 开始学习		Gets the position of the first occurrence of a string in another
InstrRev 开始学习		Gets the position of the first occurrence of a string in another, from the end of string
LCase 开始学习		Converts a string to lower-case
Left 开始学习		Extracts a number of characters from a string (starting from left)
Len 开始学习		Returns the length of a string
LTrim 开始学习		Removes leading spaces from a string
Mid 开始学习		Extracts some characters from a string (starting at any position)
Replace 开始学习		Replaces a substring within a string, with another substring, a specified number of times
Right 开始学习		Extracts a number of characters from a string (starting from right)
RTrim 开始学习		Removes trailing spaces from a string
Space 开始学习		Returns a string of the specified number of space characters
Split 开始学习		Splits a string into an array of substrings
Str 开始学习		Returns a number as string
StrComp 开始学习		Compares two strings
StrConv 开始学习		Returns a converted string
StrReverse 开始学习		Reverses a string and returns the result
Trim 开始学习		Removes both leading and trailing spaces from a string
UCase 开始学习		Converts a string to upper-case
Abs 开始学习		Returns the absolute value of a number
Atn 开始学习		Returns the arc tangent of a number
Avg 开始学习		Returns the average value of an expression
Cos 开始学习		Returns the cosine of an angle
Count 开始学习		Returns the number of records returned by a select query
Exp 开始学习		Returns e raised to the power of a specified number
Fix 开始学习		Returns the integer part of a number
Format 开始学习		Formats a numeric value with the specified format
Int 开始学习		Returns the integer part of a number
Max 开始学习		Returns the maximum value in a set of values
Min 开始学习		Returns the minimum value in a set of values
Randomize 开始学习		Initializes the random number generator (used by Rnd()) with a seed
Rnd 开始学习		Returns a random number
Round 开始学习		Rounds a number to a specified number of decimal places
Sgn 开始学习		Returns the sign of a number
Sqr 开始学习		Returns the square root of a number
Sum 开始学习		Calculates the sum of a set of values
Val 开始学习		Reads a string and returns the numbers found in the string
Date 开始学习		Returns the current system date
DateAdd 开始学习		Adds a time/date interval to a date and then returns the date
DateDiff 开始学习		Returns the difference between two dates
DatePart 开始学习		Returns a specified part of a date (as an integer)
DateSerial 开始学习		Returns a date from the specified parts (year, month, and day values)
DateValue 开始学习		Returns a date based on a string
Day 开始学习		Returns the day of the month for a given date
Format 开始学习		Formats a date value with the specified format
Hour 开始学习		Returns the hour part of a time/datetime
Minute 开始学习		Returns the minute part of a time/datetime
Month 开始学习		Returns the month part of a given date
MonthName 开始学习		Returns the name of the month based on a number
Now 开始学习		Returns the current date and time based on the computer's system date and time
Second 开始学习		Returns the seconds part of a time/datetime
Time 开始学习		Returns the current system time
TimeSerial 开始学习		Returns a time from the specified parts (hour, minute, and second value)
TimeValue 开始学习		Returns a time based on a string
Weekday 开始学习		Returns the weekday number for a given date
WeekdayName 开始学习		Returns the weekday name based on a number
Year 开始学习		Returns the year part of a given date
CurrentUser 开始学习		Returns the name of the current database user
Environ 开始学习		Returns a string that contains the value of an operating system environment variable
IsDate 开始学习		Checks whether an expression can be converted to a date
IsNull 开始学习		Checks whether an expression contains Null (no data)
IsNumeric 开始学习		Checks whether an expression is a valid number

MS Access functions from W3S

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