SQLITE3CHANGESET_PK(3) Library Functions Manual SQLITE3CHANGESET_PK(3)

sqlite3changeset_pk
Obtain The Primary Key Definition Of A Table

int
sqlite3changeset_pk(sqlite3_changeset_iter *pIter, unsigned char **pabPK, int *pnCol );

For each modified table, a changeset includes the following:

This function is used to find which columns comprise the PRIMARY KEY of the table modified by the change that iterator pIter currently points to. If successful, *pabPK is set to point to an array of nCol entries, where nCol is the number of columns in the table. Elements of *pabPK are set to 0x01 if the corresponding column is part of the tables primary key, or 0x00 if it is not.

If argument pnCol is not NULL, then *pnCol is set to the number of columns in the table.

If this function is called when the iterator does not point to a valid entry, SQLITE_MISUSE is returned and the output variables zeroed. Otherwise, SQLITE_OK is returned and the output variables populated as described above.

December 19, 2018 NetBSD 9.2