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If the test pattern consists of two apostrophes alone (’’ or G’’) or two apostrophes enclosing only DBCS
shift-out and shift-in characters (’s/os/i’ or G’s/os/i’), the test pattern is treated as an empty string.
These patterns will select records in which the field contains an empty string.
Using more than one comparison test in Query for iSeries
When you use more than one comparison, you need to tell Query how to connect them by typing a
connection in the AND/OR column. The two types of connections are:
v AND connections
v OR connections
If you do not specify anything in the AND/OR column between comparisons, Query assumes AND. All of
the comparisons that are connected by ANDs must be true for the record to be selected by that group of
comparisons.
For example, to select records for all customers with the last name of ’Clarke’ and who live in Arizona
(‘AZ’) requires an AND connection:
Select Records
Type comparisons, press Enter. Specify OR to start each new group.
Tests: EQ, NE, LE, GE, LT, GT, RANGE, LIST, LIKE, IS, ISNOT...
AND/OR Field Test Value (Field, Number, or ’Characters’)
LASTNAME EQ ’Clarke’
AND STATE EQ ’AZ’
____ ______________ _____ ______________________________
____ ______________ _____ ______________________________
____ ______________ _____ ______________________________
____ ______________ _____ ______________________________
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________________________________________________________________________
ACCTNUMBER STREETADDR CRLIMIT YEAR
COMPANY CITY BALDUE MONTH
FIRSTNAME STATE PASTDUE
MIDDLEINIT ZIPCODE DATEPAID
LASTNAME TELENUMBER CURRENTDAT
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Although this example shows the AND typed in the AND/OR column, it is not necessary. (If you leave the
AND/OR column blank, Query assumes an AND connection.) Comparisons connected with one or more
ANDs are considered a group of comparisons.
The other kind of connection between comparisons is OR; that is, one or more of the comparisons (or
groups of comparisons) must be true for the record to be selected.
Because Query assumes AND connections unless told otherwise, you must specify OR in the AND/OR
column whenever you want an OR connection.
For example, to select records in which the last name is Kingsbury or the credit limit is greater than or
equal to $5,000 requires an OR connection:
Chapter 7. Selecting records in Query for iSeries 101