When I try to UPDATE the column TipoAyuda of the table AyudaEcon I receive the message 'Invalid Column Name CodAyudaEcon' wich is the primary key. I can't INSERT rows neither.
However, if I do the following:
WHERE CodAyudaEcon = '0001'
I receive the expected results.
I can also select the column name from the Sysobjects table of the database.
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Nowadays, some of developer are too much worried about data. Who is using data, who is updating it etc. etc. Because, data is more costlier in term of money and information. So security of data is focusing concern in days.
Lets' understand the Au…
Using examples as well as descriptions, and references to Books Online, show the documentation available for date manipulation functions and by using a select few of these functions, show how date based data can be manipulated with these functions.