**************   Case 1   ***************
	/*	trace_id=ABC	*/rpc_id=xxx
trace_id: ABC
**************   Case 2   ***************

/*
trace_id=ABC
rpc_id=xxx*/
trace_id: ABC
**************   Case 3   ***************
/*trace_id=ABCrpc_id=xxx*/
trace_id: ABC
**************   Case 4   ***************

/*
trace_id=ABC
rpc_id=xxx*/
trace_id: ABC
**************   Case 5   ***************
/*trace_id=xxx*/select * from t1;
trace_id: xxx
**************   Case 6   ***************
 /*TrAcE_Id=xxx read*/ select * from t1;
trace_id: xxx
**************   Case 7   ***************
/*+tRaCe_iD=abcd12 * read*/ select * from t1;
trace_id: abcd12
**************   Case 8   ***************
/* trace_id=a12db   rpc_id=xxxxx */ select * from t1;
trace_id: a12db
**************   Case 9   ***************
/*trace_id=xxx,rpc_id=xxx*/select * from t1;
trace_id: xxx
**************   Case 10   ***************
 /*rpc_id=xxx, TrAcE_Id=xxx, read*/ select * from t1;
trace_id: xxx
**************   Case 11   ***************
/*+tRaCe_iD=abcd12* read*/ select * from t1;
trace_id: abcd12
**************   Case 12   ***************
/* trace_id=a12db,   rpc_id=xxxxx */ select * from t1;
trace_id: a12db
**************   Case 13   ***************
/*trace_id=1111111122222222aaaaaaaabbbbbbbb5555555566666666cccccccc888888889999999 rpc_id=xxx*/ select * from t1;
trace_id: 1111111122222222aaaaaaaabbbbbbbb5555555566666666cccccccc88888888
**************   Case 14   ***************
/*trace_id=1111111122222222aaaaaaaabbbbbbbb5555555566666666cccccccc88888888 rpc_id=xxx*/ select * from t1;
trace_id: 1111111122222222aaaaaaaabbbbbbbb5555555566666666cccccccc88888888
**************   Case 15   ***************
/*trace_id=1111111122222222aaaaaaaabbbbbbbb5555555566666666cccccccc8888888 rpc_id=xxx*/ select * from t1;
trace_id: 1111111122222222aaaaaaaabbbbbbbb5555555566666666cccccccc8888888
**************   Case 16   ***************
/*trace_id=1111111122222222aaaaaaaabbbbbbbb5555555566666666cccccccc888888889 rpc_id=xxx*/ select * from t1;
trace_id: 1111111122222222aaaaaaaabbbbbbbb5555555566666666cccccccc88888888
**************   Case 17   ***************
/*trace_id=1 rpc_id=xxx*/ select * from t1;
trace_id: 1
**************   Case 18   ***************
/*trace_id=12QA  rpc_id=xxx*/ select * from t1;
trace_id: 12QA
**************   Case 19   ***************
  /*trace_id=12QA  rpc_id=xxx*/ select * from t1;
trace_id: 12QA
**************   Case 20   ***************
select /*trace_id=xx*/ * from t1;
trace_id: 
**************   Case 21   ***************
/*trace_id= abc read*/ select * from t1;
trace_id: 
**************   Case 22   ***************
/*trace_id= abc select * from t1;
trace_id: