216 typedef struct QTNode  struct
223 	struct QTNode **child;  argument
224 } QTNode;  typedef
241 extern QTNode *QT2QTN(QueryItem *in, char *operand);
242 extern TSQuery QTN2QT(QTNode *in);
243 extern void QTNFree(QTNode *in);
244 extern void QTNSort(QTNode *in);
245 extern void QTNTernary(QTNode *in);
246 extern void QTNBinary(QTNode *in);
247 extern int	QTNodeCompare(QTNode *an, QTNode *bn);
248 extern QTNode *QTNCopy(QTNode *in);
249 extern void QTNClearFlags(QTNode *in, uint32 flags);
250 extern bool QTNEq(QTNode *a, QTNode *b);
252 extern QTNode *findsubquery(QTNode *root, QTNode *ex, QTNode *subs,