SQL_IS_EMPTY     121806 third_party/sqlite/amalgamation/sqlite3.c   rc = fts3SqlStmt(p, SQL_IS_EMPTY, &pStmt, apVal);
SQL_IS_EMPTY     1900 third_party/sqlite/src/ext/fts3/fts3_write.c   rc = fts3SqlStmt(p, SQL_IS_EMPTY, &pStmt, apVal);