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1 Microsoft Access. 2 Specifying Query Criteria 3 Exact Matches and Literal values.

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Presentation on theme: "1 Microsoft Access. 2 Specifying Query Criteria 3 Exact Matches and Literal values."— Presentation transcript:

1 1 Microsoft Access

2 2 Specifying Query Criteria

3 3 Exact Matches and Literal values

4 4 Text Literal values for text must be enclosed in quotes: Example: "Smith"

5 5 Number, Currency Number and currency values should NOT be in quotes: Example: 9.70

6 6 Date/Time Date/Time values should be surrounded by hash signs (AKA number or pound signs) Example: #7/30/2005#

7 7 Inexact Matches

8 8 Relational operators DescriptionExample greater than>10 less than<10 greater than or equal to>=10 less than or equal to<=10 Not equal to<>10

9 9 between... and... between 3 and 5 includes 3, 4 and 5 between #1/1/2005# and #3/10/2006# includes all dates between Jan and March 10, 2006 between "cohen" and "cramden" inlcudes all text which sorts alphabetically between "cohen" and "cramden"

10 10 in ( ) Examples –in(3,5,6) –in("cohen","cramden","smith","jones") –in(#1/1/2005#, #1/1/2006#)

11 11 Wildcards

12 12 LIKE Like is used to match patterns of values Example: Like "s*" Will match all values that start with an "s"

13 13 Wildcards A wildcard is the pattern that specifies what will be matched.

14 14 Wildcard characters Wildcards use special characters to specify the types of information to match: see next few slides

15 15 asterisk: * asterisk ( * ) - matches any number of any character (including zero characters) examples on next slide...

16 16 examples of * like "s*"Matches all values that start with "s". (e.g. "smith", "schwartz", but not "cohen" or "davies") like "*s"Matches all values that end with "s" (e.g. "davies" but not "smith" or "schwartz") like "c*n" Matches all values that start with "c" and end with "n". (e.g. "cohen", "cramden", "cohan" and "cohain") like "c*a*n"Matches all values that start with c, have an "a" somewhere in the middle and end with an "n". (e.g. "cohain" and "cohan") like "c*an"Matches all values that start with "c" and end with "an". (e.g. "cohan" but not "cohain")

17 17 question mark: ? question mark ( ? ) matches a single character. Examples like "a??" matches "ape", "aaa" and "ark" but not "apple". like "*a?" matches "bread" and "lean" but not "apple" and not "fella"

18 18 number sign: # number sign ( # ) matches a single numerical digit Examples: like "###abc"(there are 3 number signs) matches "123abc" and "456abc" but not "a123abc" and not "abc123" and not "1234abc".


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