Qualifiers In MySQL
what do you mean by Qualifiers in MySQL ?
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Satyapriya NayakPosted Nov 22, 2011, 3:54 AM
MySQL permits names that consist of a single identifier or multiple identifiers. The components of a multiple-part name must be separated by period (".") characters. The initial parts of a multiple-part name act as qualifiers that affect the context within which the final identifier is interpreted.
In MySQL, you can refer to a table column using any of the following forms.
Please refer the below link
http://dev.mysql.com/doc/refman/5.0/en/identifier-qualifiers.html
Thanks