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Session Module C Interface

Obtain new.* Values From A Changeset Iterator

int sqlite3changeset_new(
  sqlite3_changeset_iter *pIter,  /* Changeset iterator */
  int iVal,                       /* Column number */
  sqlite3_value **ppValue         /* OUT: New value (or NULL pointer) */

The pIter argument passed to this function may either be an iterator passed to a conflict-handler by sqlite3changeset_apply(), or an iterator created by sqlite3changeset_start(). In the latter case, the most recent call to sqlite3changeset_next() must have returned SQLITE_ROW. Furthermore, it may only be called if the type of change that the iterator currently points to is either SQLITE_UPDATE or SQLITE_INSERT. Otherwise, this function returns SQLITE_MISUSE and sets *ppValue to NULL.

Argument iVal must be greater than or equal to 0, and less than the number of columns in the table affected by the current change. Otherwise, SQLITE_RANGE is returned and *ppValue is set to NULL.

If successful, this function sets *ppValue to point to a protected sqlite3_value object containing the iVal'th value from the vector of new row values stored as part of the UPDATE or INSERT change and returns SQLITE_OK. If the change is an UPDATE and does not include a new value for the requested column, *ppValue is set to NULL and SQLITE_OK returned. The name of the function comes from the fact that this is similar to the "new.*" columns available to update or delete triggers.

If some other error occurs (e.g. an OOM condition), an SQLite error code is returned and *ppValue is set to NULL.

See also lists of Objects, Constants, and Functions.

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