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... are above 90% then for choosing all male employees direct table scan is faster and for choosing female employees, index scan is faster. Rule based optimization which was prevalent long time back always used indexes. Oracle moved from RBO to Cost Based Optimization long time back (I think around ...

What is less known is that most SQL functions totally ignore indexes and incite a full table scan. Any decent SQL engine use indexes for query optimization. This is a well known fact since the 70's. Or that adding indexes like pepper and salt can actually SLOW down a database. This is true. Any ...

... RDD to optimize filters. Even if I know that I may not be knowing how to build a filter expression (or index expression) to take advantage of the optimization. It is from this stage many of us need to learn. I will again learn my mistakes after I start adding indexes like salt and pepper. I consider ...

... viz., desktop, tablet and mobile phone. - Related issues. RDBMS ===== RDBMS SQL Ansi SQL Database Design Data Normalisation Data Integrity Optimization Reduction of load on Server and Network Query Optimization Indexes ADO Connection Object RecordSet object Command Object FWH Classes TRecSet ...

... viz., desktop, tablet and mobile phone. - Related issues. RDBMS ===== RDBMS SQL Ansi SQL Database Design Data Normalisation Data Integrity Optimization Reduction of load on Server and Network Query Optimization Indexes ADO Connection Object RecordSet object Command Object FWH Classes TRecSet ...

Well, using regexp and index custom, ey now in memory, not is very dificult.
Remenber , regexp is your friend

Regards

Changes in Google search While Google is still the undisputed leader of traffic generation, recent changes in their search results page layout have changed the balance between paid and non paid real estate on the page, which means a reliance on Google for website traffic has now become more expensi...

You can use SQL with DBF also

It's a normal FWH program with dbf files that I use to upload in Prestashop. No SQL involved. I'm thinking of using a 2 Xbrowse's, left where all the individual words are listed, and write the xbrowse with the resolt combination of words. I the left listbox I can select the words with the selector t...

You may do a SQL query

Has anyone created SEO's words, sentences from products in a database ? In a webshop, filled with products names, descriptions, options there is a lot of info that Google search can index, if provided the right way. In Prestashop (webshop) you can give each products the folowing info : Meta Title (7...

... (Build 20160705) xHarbour built on..: Jul 8 2016 15:17:55 C/C++ compiler.....: Pelles ISO C Compiler 3.0 (32-bit) Multi Threading....: NO VM Optimization....: 2 Current Area ......:1 -------------------------- Environmental Information -------------------------- SET ALTERNATE......: OFF SET ...

... cSql, [aParams], [lShow] ) --> lValidSql Can be used to check validity of sql without executing Can also be used to view execution plan for optimization * RICHEDIT5 - New METHOD SaveToPDF( cName, cFile, lView ) cName := <Optional - Name of report - Not used yet> cFile := File of PDF ...

... in TMenu Now is possible use of all type images ( .ico included ) If not clausule ADJUST is added, images they are adjusted a left space of menu Optimization and clean code Samples Mnu01.prg and Mnu02.prg for test - New clausule NOCENTER in MENU BAR for align item to LEFT - Images painted gray ...

... 2015, _2015> ]; - Bug Fixed: when style is 2013 or 2015 and STARTBTN <> 0, folder say with white color * XBrowse: - Fix: A speed optimization introduced in FWH 16.05 is not compatible with ADS. While this is taken care of in SetRDD(), it effected navigation of ADS with TDatabase. ...