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diff --git a/www/session/sqlite3changeset_invert.html b/www/session/sqlite3changeset_invert.html new file mode 100644 index 0000000..d97c44f --- /dev/null +++ b/www/session/sqlite3changeset_invert.html @@ -0,0 +1,151 @@ +<!DOCTYPE html> +<html><head> +<meta name="viewport" content="width=device-width, initial-scale=1.0"> +<meta http-equiv="content-type" content="text/html; charset=UTF-8"> +<link href="../sqlite.css" rel="stylesheet"> +<title>Invert A Changeset</title> +<!-- path=../ --> +</head> +<body> +<div class=nosearch> +<a href="../index.html"> +<img class="logo" src="../images/sqlite370_banner.gif" alt="SQLite" border="0"> +</a> +<div><!-- IE hack to prevent disappearing logo --></div> +<div class="tagline desktoponly"> +Small. Fast. 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Applying an inverted +changeset to a database reverses the effects of applying the uninverted +changeset. Specifically:</p> + +<p><ul> + <li> Each DELETE change is changed to an INSERT, and + <li> Each INSERT change is changed to a DELETE, and + <li> For each UPDATE change, the old.* and new.* values are exchanged. +</ul></p> + +<p>This function does not change the order in which changes appear within +the changeset. It merely reverses the sense of each individual change.</p> + +<p>If successful, a pointer to a buffer containing the inverted changeset +is stored in *ppOut, the size of the same buffer is stored in *pnOut, and +SQLITE_OK is returned. If an error occurs, both *pnOut and *ppOut are +zeroed and an SQLite error code returned.</p> + +<p>It is the responsibility of the caller to eventually call sqlite3_free() +on the *ppOut pointer to free the buffer allocation following a successful +call to this function.</p> + +<p>WARNING/TODO: This function currently assumes that the input is a valid +changeset. If it is not, the results are undefined. +</p><p>See also lists of + <a href="../session/objlist.html">Objects</a>, + <a href="../session/constlist.html">Constants</a>, and + <a href="../session/funclist.html">Functions</a>.</p> + |