I need to add an index tag to a VFP table (part of VFP database). The field is type C, 40. I am always concerned that if I create an index on the entire field (of 40 char length), it will slow down the opening/updating/maintaining the table. I thought that maybe I should create an index tag only on the first 20 characters. Like
index on upper(substr(MYFLD,1,20)) tag MYTAG
Is it better? Or by adding the SUBSTR() expression I am loading the index tag anyway? The table, by the way, will have max of about 10,000 records.
Thank you for any suggestions.
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