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|
ij> --
-- Licensed to the Apache Software Foundation (ASF) under one or more
-- contributor license agreements. See the NOTICE file distributed with
-- this work for additional information regarding copyright ownership.
-- The ASF licenses this file to You under the Apache License, Version 2.0
-- (the "License"); you may not use this file except in compliance with
-- the License. You may obtain a copy of the License at
--
-- http://www.apache.org/licenses/LICENSE-2.0
--
-- Unless required by applicable law or agreed to in writing, software
-- distributed under the License is distributed on an "AS IS" BASIS,
-- WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-- See the License for the specific language governing permissions and
-- limitations under the License.
--
-- DERBY-939
-- Test union and intersect/except with runtime statistics enabled.
CREATE TABLE t1 (i int);
0 rows inserted/updated/deleted
ij> CREATE TABLE t2 (j int);
0 rows inserted/updated/deleted
ij> CREATE TABLE t3 (k int);
0 rows inserted/updated/deleted
ij> INSERT INTO t1 VALUES 3,2,1;
3 rows inserted/updated/deleted
ij> INSERT INTO t2 VALUES 1,2,3,4;
4 rows inserted/updated/deleted
ij> INSERT INTO t3 VALUES 5,2,3,4,1;
5 rows inserted/updated/deleted
ij> CALL SYSCS_UTIL.SYSCS_SET_RUNTIMESTATISTICS(1);
0 rows inserted/updated/deleted
ij> MaximumDisplayWidth 7000;
ij> SELECT i FROM t1 UNION SELECT j FROM t2 INTERSECT SELECT k FROM t3;
1
-----------
1
2
3
4
ij> VALUES SYSCS_UTIL.SYSCS_GET_RUNTIMESTATISTICS();
1
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Statement Name:
null
Statement Text:
SELECT i FROM t1 UNION SELECT j FROM t2 INTERSECT SELECT k FROM t3
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 = 7
Rows returned = 4
Eliminate duplicates = true
In sorted order = false
Sort information:
Number of rows input=7
Number of rows output=4
constructor time (milliseconds) = 0
open time (milliseconds) = 0
next time (milliseconds) = 0
close time (milliseconds) = 0
Source result set:
Union ResultSet:
Number of opens = 1
Rows seen from the left = 3
Rows seen from the right = 4
Rows returned = 7
constructor time (milliseconds) = 0
open time (milliseconds) = 0
next time (milliseconds) = 0
close time (milliseconds) = 0
Left result set:
Table Scan ResultSet for T1 at read committed isolation level using instantaneous share row locking chosen by the optimizer
Number of opens = 1
Rows seen = 3
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=All
Number of columns fetched=1
Number of pages visited=1
Number of rows qualified=3
Number of rows visited=3
Scan type=heap
start position:
null
stop position:
null
qualifiers:
None
Right result set:
INTERSECT ResultSet:
Number of opens = 1
Rows seen from the left = 4
Rows seen from the right = 4
Rows returned = 4
constructor time (milliseconds) = 0
open time (milliseconds) = 0
next time (milliseconds) = 0
close time (milliseconds) = 0
Left result set:
Sort ResultSet:
Number of opens = 1
Rows input = 4
Rows returned = 4
Eliminate duplicates = false
In sorted order = false
Sort information:
Number of rows input=4
Number of rows output=4
constructor time (milliseconds) = 0
open time (milliseconds) = 0
next time (milliseconds) = 0
close time (milliseconds) = 0
Source result set:
Table Scan ResultSet for T2 at read committed isolation level using instantaneous share row locking chosen by the optimizer
Number of opens = 1
Rows seen = 4
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=All
Number of columns fetched=1
Number of pages visited=1
Number of rows qualified=4
Number of rows visited=4
Scan type=heap
start position:
null
stop position:
null
qualifiers:
None
Right result set:
Sort ResultSet:
Number of opens = 1
Rows input = 5
Rows returned = 4
Eliminate duplicates = false
In sorted order = false
Sort information:
Number of rows input=5
Number of rows output=5
constructor time (milliseconds) = 0
open time (milliseconds) = 0
next time (milliseconds) = 0
close time (milliseconds) = 0
Source result set:
Table Scan ResultSet for T3 at read committed isolation level using instantaneous share row locking chosen by the optimizer
Number of opens = 1
Rows seen = 5
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=All
Number of columns fetched=1
Number of pages visited=1
Number of rows qualified=5
Number of rows visited=5
Scan type=heap
start position:
null
stop position:
null
qualifiers:
None
ij> SELECT i FROM t1 UNION SELECT j FROM t2 EXCEPT SELECT k FROM t3;
1
-----------
ij> VALUES SYSCS_UTIL.SYSCS_GET_RUNTIMESTATISTICS();
1
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Statement Name:
null
Statement Text:
SELECT i FROM t1 UNION SELECT j FROM t2 EXCEPT SELECT k FROM t3
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:
EXCEPT ResultSet:
Number of opens = 1
Rows seen from the left = 4
Rows seen from the right = 4
Rows returned = 0
constructor time (milliseconds) = 0
open time (milliseconds) = 0
next time (milliseconds) = 0
close time (milliseconds) = 0
Left result set:
Sort ResultSet:
Number of opens = 1
Rows input = 7
Rows returned = 4
Eliminate duplicates = true
In sorted order = false
Sort information:
Number of rows input=7
Number of rows output=4
constructor time (milliseconds) = 0
open time (milliseconds) = 0
next time (milliseconds) = 0
close time (milliseconds) = 0
Source result set:
Union ResultSet:
Number of opens = 1
Rows seen from the left = 3
Rows seen from the right = 4
Rows returned = 7
constructor time (milliseconds) = 0
open time (milliseconds) = 0
next time (milliseconds) = 0
close time (milliseconds) = 0
Left result set:
Table Scan ResultSet for T1 at read committed isolation level using instantaneous share row locking chosen by the optimizer
Number of opens = 1
Rows seen = 3
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=All
Number of columns fetched=1
Number of pages visited=1
Number of rows qualified=3
Number of rows visited=3
Scan type=heap
start position:
null
stop position:
null
qualifiers:
None
Right result set:
Table Scan ResultSet for T2 at read committed isolation level using instantaneous share row locking chosen by the optimizer
Number of opens = 1
Rows seen = 4
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=All
Number of columns fetched=1
Number of pages visited=1
Number of rows qualified=4
Number of rows visited=4
Scan type=heap
start position:
null
stop position:
null
qualifiers:
None
Right result set:
Sort ResultSet:
Number of opens = 1
Rows input = 5
Rows returned = 4
Eliminate duplicates = false
In sorted order = false
Sort information:
Number of rows input=5
Number of rows output=5
constructor time (milliseconds) = 0
open time (milliseconds) = 0
next time (milliseconds) = 0
close time (milliseconds) = 0
Source result set:
Table Scan ResultSet for T3 at read committed isolation level using instantaneous share row locking chosen by the optimizer
Number of opens = 1
Rows seen = 5
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=All
Number of columns fetched=1
Number of pages visited=1
Number of rows qualified=5
Number of rows visited=5
Scan type=heap
start position:
null
stop position:
null
qualifiers:
None
ij> SELECT i FROM t1 INTERSECT SELECT j FROM t2 EXCEPT SELECT k FROM t3;
1
-----------
ij> VALUES SYSCS_UTIL.SYSCS_GET_RUNTIMESTATISTICS();
1
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Statement Name:
null
Statement Text:
SELECT i FROM t1 INTERSECT SELECT j FROM t2 EXCEPT SELECT k FROM t3
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:
EXCEPT ResultSet:
Number of opens = 1
Rows seen from the left = 3
Rows seen from the right = 3
Rows returned = 0
constructor time (milliseconds) = 0
open time (milliseconds) = 0
next time (milliseconds) = 0
close time (milliseconds) = 0
Left result set:
INTERSECT ResultSet:
Number of opens = 1
Rows seen from the left = 3
Rows seen from the right = 3
Rows returned = 3
constructor time (milliseconds) = 0
open time (milliseconds) = 0
next time (milliseconds) = 0
close time (milliseconds) = 0
Left result set:
Sort ResultSet:
Number of opens = 1
Rows input = 3
Rows returned = 3
Eliminate duplicates = false
In sorted order = false
Sort information:
Number of rows input=3
Number of rows output=3
constructor time (milliseconds) = 0
open time (milliseconds) = 0
next time (milliseconds) = 0
close time (milliseconds) = 0
Source result set:
Table Scan ResultSet for T1 at read committed isolation level using instantaneous share row locking chosen by the optimizer
Number of opens = 1
Rows seen = 3
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=All
Number of columns fetched=1
Number of pages visited=1
Number of rows qualified=3
Number of rows visited=3
Scan type=heap
start position:
null
stop position:
null
qualifiers:
None
Right result set:
Sort ResultSet:
Number of opens = 1
Rows input = 4
Rows returned = 3
Eliminate duplicates = false
In sorted order = false
Sort information:
Number of rows input=4
Number of rows output=4
constructor time (milliseconds) = 0
open time (milliseconds) = 0
next time (milliseconds) = 0
close time (milliseconds) = 0
Source result set:
Table Scan ResultSet for T2 at read committed isolation level using instantaneous share row locking chosen by the optimizer
Number of opens = 1
Rows seen = 4
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=All
Number of columns fetched=1
Number of pages visited=1
Number of rows qualified=4
Number of rows visited=4
Scan type=heap
start position:
null
stop position:
null
qualifiers:
None
Right result set:
Sort ResultSet:
Number of opens = 1
Rows input = 5
Rows returned = 3
Eliminate duplicates = false
In sorted order = false
Sort information:
Number of rows input=5
Number of rows output=5
constructor time (milliseconds) = 0
open time (milliseconds) = 0
next time (milliseconds) = 0
close time (milliseconds) = 0
Source result set:
Table Scan ResultSet for T3 at read committed isolation level using instantaneous share row locking chosen by the optimizer
Number of opens = 1
Rows seen = 5
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=All
Number of columns fetched=1
Number of pages visited=1
Number of rows qualified=5
Number of rows visited=5
Scan type=heap
start position:
null
stop position:
null
qualifiers:
None
ij> CALL SYSCS_UTIL.SYSCS_SET_RUNTIMESTATISTICS(0);
0 rows inserted/updated/deleted
ij>
|
