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#1
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What does this Mean?????
What does 5 or 7 mean?
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#2
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What does this Mean?????
In the Criteria of a query, it means you field does not equal 5 or it DOES
equal 7. This will basically return every value except 5, so the "or" does nothing. What do you want it to mean? -- --Roger Carlson MS Access MVP Access Database Samples: www.rogersaccesslibrary.com Want answers to your Access questions in your Email? Free subscription: http://peach.ease.lsoft.com/scripts/...UBED1=ACCESS-L wrote in message ... What does 5 or 7 mean? |
#3
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What does this Mean?????
I was looking at query someone else wrote and was trying to figure out
what was going on. Thanks On Jan 29, 12:03*pm, "Roger Carlson" wrote: In the Criteria of a query, it means you field does not equal 5 or it DOES equal 7. *This will basically return every value except 5, so the "or" does nothing. What do you want it to mean? -- --Roger Carlson * MS Access MVP * Access Database Samples:www.rogersaccesslibrary.com * Want answers to your Access questions in your Email? * Free subscription: *http://peach.ease.lsoft.com/scripts/...UBED1=ACCESS-L wrote in message ... What does 5 or 7 *mean?- Hide quoted text - - Show quot |
#4
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What does this Mean?????
As Roger says it should be "and" not "or"
SELECT TableName.YourNumberField FROM TableName WHERE (((TableName.YourNumberField)5 And (TableName.YourNumberField)=7)); But as you as saying Not = 5 and = 7 all you will get is 7 So, even when typed correctly, it still should just be 7 (forget the 5) or foget the 7 -- Wayne Trentino, Italia. "Roger Carlson" wrote: In the Criteria of a query, it means you field does not equal 5 or it DOES equal 7. This will basically return every value except 5, so the "or" does nothing. What do you want it to mean? -- --Roger Carlson MS Access MVP Access Database Samples: www.rogersaccesslibrary.com Want answers to your Access questions in your Email? Free subscription: http://peach.ease.lsoft.com/scripts/...UBED1=ACCESS-L wrote in message ... What does 5 or 7 mean? |
#5
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What does this Mean?????
Its difficult to know just what the original developer had in mind with this
criterion. AND and OR are Boolean logical operators. AND means both conditions must be True for the expression as a whole to be True, OR means either one can be True for the expression as a whole to be True. As written the expression 5 or 7, if in the criteria row of a column MyField in a query in design view, would be the same as the following statement: WHERE MyField 5 OR MyField = 7 This question would be asked of every row and if True the row is returned. The first part will be True for any row where MyField does not equal 5, i.e. every row apart from those where MyField = 5. The second part will be True for those rows where MyField equals 7. But as an OR operator is used here any row where MyField = 7 will already be returned because it doesn't equal 5, so the first part of the expression is already True. As an OR operation requires only one part to be True then the second part of the expression is doing nothing. If the developer meant that only rows where MyField was equal to neither 5 or 7, i.e. all rows bar those with one of those values in MyField then another Boolean operator can be brought into p[lay, the NOT operator, which as you'd expect negatives the expression so it would be: WHERE NOT(Myfield= 5 OR MyField = 7) in query d4sign vie this can be entered in the criteria row of MyField as: Not(5 Or 7) As rule of thumb think of OR operations being used on one column; to return rows with either value. Think of AND operations being used on combinations of columns; to return rows with a value in each, e.g. all employees in London with salaries greater than 30,000 GBP: WHERE City = "London" AND Salary 30000 In query design view you'd do this by putting "London" in the first criteria row of the City column and 30000 in the criteria row of the Salary column. To return all employees in London or Manchester regardless of salary would be: WHERE City = "London" OR City = "Manchester" In query design row you'd put each city name on separate criteria rows of the city column. Note that in everyday English we might well say "all employees in London and Manchester" when meaning the above. Boolean logic however requires an OR. If we wanted to combine the two the expression would be: WHERE (City = "London" OR City = "Manchester") AND Salary 30000 Note that the OR operation is included in parentheses here to force it to evaluate independently of the AND operation. In query design view the city names would again be entered on separate criteria rows of the city column, but in this case 30000 would have to be entered twice, on two separate criteria rows of the Salary column, each alongside one of the criteria on the City column. Ken Sheridan Stafford, England " wrote: I was looking at query someone else wrote and was trying to figure out what was going on. Thanks On Jan 29, 12:03 pm, "Roger Carlson" wrote: In the Criteria of a query, it means you field does not equal 5 or it DOES equal 7. This will basically return every value except 5, so the "or" does nothing. What do you want it to mean? -- --Roger Carlson MS Access MVP Access Database Samples:www.rogersaccesslibrary.com Want answers to your Access questions in your Email? Free subscription: http://peach.ease.lsoft.com/scripts/...UBED1=ACCESS-L wrote in message ... What does 5 or 7 mean?- Hide quoted text - - Show quot |
#6
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What does this Mean?????
not equal to 5 or does equal 7
Seems strange criteria For FREE Access ebook and videos click here http://access-databases.com/ebook On 29 Jan, 16:20, wrote: What does 5 or 7 *mean? |
#7
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What does this Mean?????
But than I would read it as
If Control 5 Or Control 7 Then 'do something else wrote: What does 5 or 7 mean? -- Please Rate the posting if helps you. Message posted via AccessMonster.com http://www.accessmonster.com/Uwe/For...arted/200901/1 |
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