Executing queries
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## Executing queries

So let's execute an actual query. There is no "query class" in libpqxx™; we really do try to keep your life simple.

A query is executed within a transaction by passing the query string to the transaction object's `exec` method. If the query fails to complete successfully, this method will throw the appropriate exception.

The query itself is a standard C string in this case, ie. a `const char *` but you'll frequently want to use a C++ `string` to make it easy to include variables:

    	void DeleteEntry(work &T, string Table, long ID)
    	{
    	T.exec("DELETE FROM " + Table + " WHERE ID=" + ID);
    	}

In some places, even `stringstream`s will work, so you can use the full stream formatting capabilities, locales etc. in the standard C++ library to compose your SQL queries.

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