嵌入式数据库sqlite 3.5.9的文档

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												Last Insert Rowid								body {				    margin: auto;				    font-family: "Verdana" "sans-serif";				    padding: 8px 1%;				}								a { color: #45735f }				a:visited { color: #734559 }								.logo { position:absolute; margin:3px; }				.tagline {				  float:right;				  text-align:right;				  font-style:italic;				  width:240px;				  margin:12px;				  margin-top:58px;				}								.toolbar {				  font-variant: small-caps;				  text-align: center;				  line-height: 1.6em;				  margin: 0;				  padding:1px 8px;				}				.toolbar a { color: white; text-decoration: none; padding: 6px 12px; }				.toolbar a:visited { color: white; }				.toolbar a:hover { color: #80a796; background: white; }								.content    { margin: 5%; }				.content dt { font-weight:bold; }				.content dd { margin-bottom: 25px; margin-left:20%; }				.content ul { padding:0px; padding-left: 15px; margin:0px; }								/* rounded corners */				.se  { background: url(../images/se.png) 100% 100% no-repeat #80a796}				.sw  { background: url(../images/sw.png) 0% 100% no-repeat }				.ne  { background: url(../images/ne.png) 100% 0% no-repeat }				.nw  { background: url(../images/nw.png) 0% 0% no-repeat }																  																												 border="0">								Small. Fast. Reliable.Choose any three.												  				  				    About				    Sitemap				    Documentation				    Download				    License				    News				    Developers				    Support				  								  				SQLite C Interface				Last Insert Rowid								sqlite3_int64 sqlite3_last_insert_rowid(sqlite3*);																Each entry in an SQLite table has a unique 64-bit signed				integer key called the "rowid". The rowid is always available				as an undeclared column named ROWID, OID, or _ROWID_ as long as those				names are not also used by explicitly declared columns. If				the table has a column of type INTEGER PRIMARY KEY then that column				is another alias for the rowid.								This routine returns the rowid of the most recent				successful INSERT into the database from the database connection				shown in the first argument.  If no successful inserts				have ever occurred on this database connection, zero is returned.								If an INSERT occurs within a trigger, then the rowid of the				inserted row is returned by this routine as long as the trigger				is running.  But once the trigger terminates, the value returned				by this routine reverts to the last value inserted before the				trigger fired.								An INSERT that fails due to a constraint violation is not a				successful insert and does not change the value returned by this				routine.  Thus INSERT OR FAIL, INSERT OR IGNORE, INSERT OR ROLLBACK,				and INSERT OR ABORT make no changes to the return value of this				routine when their insertion fails.  When INSERT OR REPLACE				encounters a constraint violation, it does not fail.  The				INSERT continues to completion after deleting rows that caused				the constraint problem so INSERT OR REPLACE will always change				the return value of this interface.								For the purposes of this routine, an insert is considered to				be successful even if it is subsequently rolled back.								Invariants:								F12221 								The 				sqlite3_last_insert_rowid() function returns the				rowid of the most recent successful insert done				on the same database connection and within the same				trigger context, or zero if there have				been no qualifying inserts on that connection.				F12223 								The 				sqlite3_last_insert_rowid() function returns				same value when called from the same trigger context				immediately before and after a ROLLBACK.												Limitations:								U12232 								If a separate thread does a new insert on the same				database connection while the 				sqlite3_last_insert_rowid()				function is running and thus changes the last insert rowid,				then the value returned by 				sqlite3_last_insert_rowid() is				unpredictable and might not equal either the old or the new				last insert rowid.												See also lists of				  Objects,				  Constants, and				  Functions.								This page last modified 2008/05/12 13:08:44 UTC											

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