distinctfiltering.out

derby database source code.good for you.

	Source result set:
		Project-Restrict ResultSet (3):
		Number of opens = 1
		Rows seen = 2
		Rows filtered = 0
		restriction = false
		projection = true
			constructor time (milliseconds) = 0
			open time (milliseconds) = 0
			next time (milliseconds) = 0
			close time (milliseconds) = 0
			restriction time (milliseconds) = 0
			projection time (milliseconds) = 0
		Source result set:
			Index Scan ResultSet for T1 using index T13 at read committed isolation level using instantaneous share row locking chosen by the optimizer
			Number of opens = 1
			Rows seen = 2
			Rows filtered = 0
			Fetch Size = 16
				constructor time (milliseconds) = 0
				open time (milliseconds) = 0
				next time (milliseconds) = 0
				close time (milliseconds) = 0
				next time in milliseconds/row = 0
			scan information: 
				Bit set of columns fetched={0, 1, 2}
				Number of columns fetched=3
				Number of deleted rows visited=0
				Number of pages visited=1
				Number of rows qualified=2
				Number of rows visited=3
				Scan type=btree
				Tree height=1
				start position: 
	>= on first 2 column(s).
	Ordered null semantics on the following columns: 
				stop position: 
	> on first 2 column(s).
	Ordered null semantics on the following columns: 
				qualifiers:
None
ij> -- equality predicate on all key columns, non unique
select distinct c3 from t1 where c1 = 1 and c2 = '1';
C3                                                
--------------------------------------------------
1                                                 
ij> values SYSCS_UTIL.SYSCS_GET_RUNTIMESTATISTICS();
1                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Statement Name: 
	null
Statement Text: 
	-- equality predicate on all key columns, non unique
select distinct c3 from t1 where c1 = 1 and c2 = '1'
Parse Time: 0
Bind Time: 0
Optimize Time: 0
Generate Time: 0
Compile Time: 0
Execute Time: 0
Begin Compilation Timestamp : null
End Compilation Timestamp : null
Begin Execution Timestamp : null
End Execution Timestamp : null
Statement Execution Plan Text: 
Sort ResultSet:
Number of opens = 1
Rows input = 2
Rows returned = 1
Eliminate duplicates = true
In sorted order = true
	constructor time (milliseconds) = 0
	open time (milliseconds) = 0
	next time (milliseconds) = 0
	close time (milliseconds) = 0
Source result set:
	Project-Restrict ResultSet (4):
	Number of opens = 1
	Rows seen = 2
	Rows filtered = 0
	restriction = false
	projection = true
		constructor time (milliseconds) = 0
		open time (milliseconds) = 0
		next time (milliseconds) = 0
		close time (milliseconds) = 0
		restriction time (milliseconds) = 0
		projection time (milliseconds) = 0
	Source result set:
		Project-Restrict ResultSet (3):
		Number of opens = 1
		Rows seen = 2
		Rows filtered = 0
		restriction = false
		projection = true
			constructor time (milliseconds) = 0
			open time (milliseconds) = 0
			next time (milliseconds) = 0
			close time (milliseconds) = 0
			restriction time (milliseconds) = 0
			projection time (milliseconds) = 0
		Source result set:
			Index Scan ResultSet for T1 using index T13 at read committed isolation level using instantaneous share row locking chosen by the optimizer
			Number of opens = 1
			Rows seen = 2
			Rows filtered = 0
			Fetch Size = 16
				constructor time (milliseconds) = 0
				open time (milliseconds) = 0
				next time (milliseconds) = 0
				close time (milliseconds) = 0
				next time in milliseconds/row = 0
			scan information: 
				Bit set of columns fetched={0, 1, 2}
				Number of columns fetched=3
				Number of deleted rows visited=0
				Number of pages visited=1
				Number of rows qualified=2
				Number of rows visited=5
				Scan type=btree
				Tree height=1
				start position: 
	>= on first 1 column(s).
	Ordered null semantics on the following columns: 
				stop position: 
	> on first 1 column(s).
	Ordered null semantics on the following columns: 
				qualifiers:
Column[0][0] Id: 2
Operator: =
Ordered nulls: false
Unknown return value: false
Negate comparison result: false
ij> -- equality predicate on all key columns, non unique
select distinct c3 from t2 where c1 = 1 and c2 = '1';
C3                                                
--------------------------------------------------
1                                                 
ij> values SYSCS_UTIL.SYSCS_GET_RUNTIMESTATISTICS();
1                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Statement Name: 
	null
Statement Text: 
	-- equality predicate on all key columns, non unique
select distinct c3 from t2 where c1 = 1 and c2 = '1'
Parse Time: 0
Bind Time: 0
Optimize Time: 0
Generate Time: 0
Compile Time: 0
Execute Time: 0
Begin Compilation Timestamp : null
End Compilation Timestamp : null
Begin Execution Timestamp : null
End Execution Timestamp : null
Statement Execution Plan Text: 
Project-Restrict ResultSet (3):
Number of opens = 1
Rows seen = 1
Rows filtered = 0
restriction = false
projection = true
	constructor time (milliseconds) = 0
	open time (milliseconds) = 0
	next time (milliseconds) = 0
	close time (milliseconds) = 0
	restriction time (milliseconds) = 0
	projection time (milliseconds) = 0
Source result set:
	Index Row to Base Row ResultSet for T2:
	Number of opens = 1
	Rows seen = 1
	Columns accessed from heap = {2}
		constructor time (milliseconds) = 0
		open time (milliseconds) = 0
		next time (milliseconds) = 0
		close time (milliseconds) = 0
		Index Scan ResultSet for T2 using index T21 at read committed isolation level using share row locking chosen by the optimizer
		Number of opens = 1
		Rows seen = 1
		Rows filtered = 0
		Fetch Size = 1
			constructor time (milliseconds) = 0
			open time (milliseconds) = 0
			next time (milliseconds) = 0
			close time (milliseconds) = 0
			next time in milliseconds/row = 0
		scan information: 
			Bit set of columns fetched=All
			Number of columns fetched=3
			Number of deleted rows visited=0
			Number of pages visited=1
			Number of rows qualified=1
			Number of rows visited=1
			Scan type=btree
			Tree height=1
			start position: 
	>= on first 2 column(s).
	Ordered null semantics on the following columns: 
			stop position: 
	> on first 2 column(s).
	Ordered null semantics on the following columns: 
			qualifiers:
None
ij> -- different orderings
select distinct c2, c1 from t1 where 1=1;
C2                                                |C1         
--------------------------------------------------------------
1                                                 |1          
11                                                |1          
2                                                 |2          
3                                                 |2          
3                                                 |3          
NULL                                              |NULL       
ij> values SYSCS_UTIL.SYSCS_GET_RUNTIMESTATISTICS();
1                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Statement Name: 
	null
Statement Text: 
	-- different orderings
select distinct c2, c1 from t1 where 1=1
Parse Time: 0
Bind Time: 0
Optimize Time: 0
Generate Time: 0
Compile Time: 0
Execute Time: 0
Begin Compilation Timestamp : null