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Faster way to get Memo line
Message
De
15/08/2006 17:12:41
Hilmar Zonneveld
Independent Consultant
Cochabamba, Bolivie
 
 
À
15/08/2006 15:27:39
Information générale
Forum:
Visual FoxPro
Catégorie:
Codage, syntaxe et commandes
Versions des environnements
Visual FoxPro:
VFP 8 SP1
OS:
Windows 2000 SP4
Network:
Windows 2000 Server
Database:
Visual FoxPro
Divers
Thread ID:
01145735
Message ID:
01145775
Vues:
27
>Hello again, Happy Fox'ers
>
>Massive amounts of data, held in a Master file and Sub-Master files, tied by a MasterID. Sub-Master structure is MasterID, Memo where the memo field can be up to 247 lines, each line being the equivalent of a data field.
>
>I want Lines NN and NN + 1 of this memo field to be pulled into an SQL:
>
>Select a.fld1, a.fld2, mline(b.MstrMemo, NN) as fld3, ;
> mline(b.MstrMemo, NN+1) as fld4 ;
>from myfile1 a, mysubfile b ;
>where b.MasterID = a.MasterID
>into cursor myCursor
>
>Timings on this are not bad for small myCursor, but get REAL bad for larger return files (400K records in 960 seconds). Is there a faster way to do this?
>
>Thanks

If you need to fetch consecutive lines from a memo, check the variable _mline - but this would be difficult to combine into a SQL-only approach.
Difference in opinions hath cost many millions of lives: for instance, whether flesh be bread, or bread be flesh; whether whistling be a vice or a virtue; whether it be better to kiss a post, or throw it into the fire... (from Gulliver's Travels)
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