ddltablelockmode.out

derby database source code.good for you.

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: 
Delete ResultSet using row locking:
deferred: false
Rows deleted = 0
Indexes updated = 0
Execute Time = 0
	Project-Restrict ResultSet (1):
	Number of opens = 1
	Rows seen = 0
	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:
		Table Scan ResultSet for ROW1 at read committed isolation level using exclusive row locking chosen by the optimizer
		Number of opens = 1
		Rows seen = 0
		Rows filtered = 0
		Fetch Size = 1
			constructor time (milliseconds) = 0
			open time (milliseconds) = 0
			next time (milliseconds) = 0
			close time (milliseconds) = 0
		scan information: 
			Bit set of columns fetched=All
			Number of columns fetched=1
			Number of pages visited=1
			Number of rows qualified=0
			Number of rows visited=0
			Scan type=heap
			start position: 
null			stop position: 
null			qualifiers:
Column[0][0] Id: 0
Operator: =
Ordered nulls: false
Unknown return value: false
Negate comparison result: false
ij> CALL WAIT_FOR_POST_COMMIT();
0 rows inserted/updated/deleted
ij> delete from table1;
1 row inserted/updated/deleted
ij> values SYSCS_UTIL.SYSCS_GET_RUNTIMESTATISTICS();
1                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Statement Name: 
	null
Statement Text: 
	delete from table1
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: 
Delete ResultSet using table locking:
deferred: false
Rows deleted = 1
Indexes updated = 0
Execute Time = 0
	Project-Restrict ResultSet (1):
	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:
		Table Scan ResultSet for TABLE1 at read committed isolation level using exclusive table 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={}
			Number of columns fetched=0
			Number of pages visited=1
			Number of rows qualified=1
			Number of rows visited=1
			Scan type=heap
			start position: 
null			stop position: 
null			qualifiers:
None
ij> CALL WAIT_FOR_POST_COMMIT();
0 rows inserted/updated/deleted
ij> delete from table1 where c1 = 1;
0 rows inserted/updated/deleted
ij> values SYSCS_UTIL.SYSCS_GET_RUNTIMESTATISTICS();
1                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Statement Name: 
	null
Statement Text: 
	delete from table1 where c1 = 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: 
Delete ResultSet using table locking:
deferred: false
Rows deleted = 0
Indexes updated = 0
Execute Time = 0
	Project-Restrict ResultSet (1):
	Number of opens = 1
	Rows seen = 0
	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:
		Table Scan ResultSet for TABLE1 at read committed isolation level using exclusive table locking chosen by the optimizer
		Number of opens = 1
		Rows seen = 0
		Rows filtered = 0
		Fetch Size = 1
			constructor time (milliseconds) = 0
			open time (milliseconds) = 0
			next time (milliseconds) = 0
			close time (milliseconds) = 0
		scan information: 
			Bit set of columns fetched=All
			Number of columns fetched=1
			Number of pages visited=1
			Number of rows qualified=0
			Number of rows visited=0
			Scan type=heap
			start position: 
null			stop position: 
null			qualifiers:
Column[0][0] Id: 0
Operator: =
Ordered nulls: false
Unknown return value: false
Negate comparison result: false
ij> CALL WAIT_FOR_POST_COMMIT();
0 rows inserted/updated/deleted
ij> -- REPEATABLE READ tests
--   repeatable read works the same as serializable when no indexes are involved
-- create tables with different lock modes
drop   table default1;
0 rows inserted/updated/deleted
ij> create table default1(c1 int);
0 rows inserted/updated/deleted
ij> drop   table row1;
0 rows inserted/updated/deleted
ij> create table row1(c1 int);
0 rows inserted/updated/deleted
ij> alter table row1 locksize row;
0 rows inserted/updated/deleted
ij> drop   table table1;
0 rows inserted/updated/deleted
ij> create table table1(c1 int);
0 rows inserted/updated/deleted
ij> alter table table1 locksize table;
0 rows inserted/updated/deleted
ij> set current isolation RS;
0 rows inserted/updated/deleted
ij> -- all selects should be row locked except for table1
select * from default1;
C1         
-----------
ij> values SYSCS_UTIL.SYSCS_GET_RUNTIMESTATISTICS();
1