what is Wildcards ?

2010-10-17 8:00 am
about Database

what is Wildcards ?



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回答 (1)

2010-10-18 5:48 am
✔ 最佳答案
wildcard means "all" in that application using asterisk, i.e. *.

In database, when using SQL to retrieve the data. If you want to select all fields of the table, you can use "select * from tablename".

When searching file from Explorer, you can mention *.doc, that is all documents with file extension of doc.


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