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cursor_random.html
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<div class="textblock"><p>The <code>next_random</code> configuration to the <a class="el" href="struct_w_t___s_e_s_s_i_o_n.html#afb5b4a69c2c5cafe411b2b04fdc1c75d" title="Open a new cursor on a data source or duplicate an existing cursor.">WT_SESSION::open_cursor</a> method configures the cursor to return a pseudo-random record from a row-store object.</p>
<p>The ability to return a random record was added to support a particular application, and as a result has somewhat unusual semantics. First, the returned record may not be random at all in the case of objects with only a few rows (especially when the object has never been written to the backing store). In such objects, the <a class="el" href="struct_w_t___c_u_r_s_o_r.html#a0503f16bd8f3d05aa3552f229b3a8e1b" title="Return the next record.">WT_CURSOR::next</a> method for cursors configured with <code>next_random</code> may return the same row on each call. Additionally, even in larger objects, the <a class="el" href="struct_w_t___c_u_r_s_o_r.html#a0503f16bd8f3d05aa3552f229b3a8e1b" title="Return the next record.">WT_CURSOR::next</a> method usually returns the first record from a random page in the underlying file, not a random record from a random page. </p>
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