Indexes on VFP tables--when do they get updated

Author: mbsoftwaresolutions@mbsoftwaresolutions.com

Posted: 2018-01-24 at 12:29:09

Question for you legends of the Fox (data):

Say Table1 has "X" number of indexes. Program code does something like

the following:

IF Condition1 THEN

REPLACE Field1 with SomeValue in Table1

ENDIF

IF Condition2 THEN

REPLACE Field48 with Datetime() in Table1

ENDIF

Are each of the "X" indexes updated for each replace, even if those

indexes do not include any reference to Field1 or Field48, or only

indexes that are affected by the data value change?

I understand that ADDing and DELETEing records updated all indexes; I

would think the UPDATEs--regardless of what fields updated--would cause

index updates for every indexed field on every update as well.

tia,

--Michael

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