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--   this work for additional information regarding copyright ownership.
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--
--      http://www.apache.org/licenses/LICENSE-2.0
--
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--
-- tests for system procedure SYSCS_COMPRESS_TABLE
-- that reclaims disk space to the OS

run resource 'createTestProcedures.subsql';
maximumdisplaywidth 512;
CREATE FUNCTION ConsistencyChecker() RETURNS VARCHAR(128)
EXTERNAL NAME 'org.apache.derbyTesting.functionTests.util.T_ConsistencyChecker.runConsistencyChecker'
LANGUAGE JAVA PARAMETER STYLE JAVA;


-- create tables
create table noindexes(c1 int, c2 char(30), c3 decimal(5,2));
create table indexes(c1 int, c2 char(30), c3 decimal(5,2));
create index i_c1 on indexes(c1);
create index i_c2 on indexes(c2);
create index i_c3 on indexes(c3);
create index i_c3c1 on indexes(c3, c1);
create index i_c2c1 on indexes(c2, c1);

create table oldconglom(o_cnum bigint, o_cname long varchar);
create table newconglom(n_cnum bigint, n_cname long varchar);

create view v_noindexes as select * from noindexes;

autocommit off;

-- test with heap only
-- test with empty table
insert into oldconglom
select conglomeratenumber, conglomeratename 
from sys.systables t, sys.sysconglomerates c
where t.tablename = 'NOINDEXES' and t.tableid = c.tableid;
select count(*) from oldconglom;
call SYSCS_UTIL.SYSCS_COMPRESS_TABLE('APP', 'NOINDEXES', 0);
insert into newconglom
select conglomeratenumber, conglomeratename 
from sys.systables t, sys.sysconglomerates c
where t.tablename = 'NOINDEXES' and t.tableid = c.tableid;
select * from oldconglom, newconglom where o_cnum = n_cnum;
select count(*) from newconglom;
select * from noindexes;
-- do consistency check on scans, etc.
values ConsistencyChecker();
rollback;

-- test with various sizes as we use bulk fetch
insert into noindexes values (1, '1', 1.1), (2, '2', 2.2), (3, '3', 3.3),
     (4, '4', 4.4), (5, '5', 5.5), (6, '6', 6.6), (7, '7', 7.7);
call SYSCS_UTIL.SYSCS_COMPRESS_TABLE('APP', 'NOINDEXES', 0);
select * from noindexes;
insert into noindexes values (8, '8', 8.8), (8, '8', 8.8), (9, '9', 9.9),
     (10, '10', 10.10), (11, '11', 11.11), (12, '12', 12.12), (13, '13', 13.13),
     (14, '14', 14.14), (15, '15', 15.15), (16, '16', 16.16);
call SYSCS_UTIL.SYSCS_COMPRESS_TABLE('APP', 'NOINDEXES', 0);
select * from noindexes;
insert into noindexes values (17, '17', 17.17), (18, '18', 18.18);
call SYSCS_UTIL.SYSCS_COMPRESS_TABLE('APP', 'NOINDEXES', 0);
select * from noindexes;
-- do consistency check on scans, etc.
values ConsistencyChecker();
rollback;

-- test with some indexes
-- test with empty table
insert into oldconglom
select conglomeratenumber, conglomeratename 
from sys.systables t, sys.sysconglomerates c
where t.tablename = 'INDEXES' and t.tableid = c.tableid;
select count(*) from oldconglom;
call SYSCS_UTIL.SYSCS_COMPRESS_TABLE('APP', 'INDEXES', 0);
insert into newconglom
select conglomeratenumber, conglomeratename 
from sys.systables t, sys.sysconglomerates c
where t.tablename = 'INDEXES' and t.tableid = c.tableid;
select * from oldconglom, newconglom where o_cnum = n_cnum;
select count(*) from newconglom;
select * from indexes;
-- do consistency check on scans, etc.
values ConsistencyChecker();
rollback;

-- test with various sizes as we use bulk fetch
insert into indexes values (1, '1', 1.1), (2, '2', 2.2), (3, '3', 3.3),
     (4, '4', 4.4), (5, '5', 5.5), (6, '6', 6.6), (7, '7', 7.7);
call SYSCS_UTIL.SYSCS_COMPRESS_TABLE('APP', 'INDEXES', 0);
select * from indexes;
insert into indexes values (8, '8', 8.8), (8, '8', 8.8), (9, '9', 9.9),
     (10, '10', 10.10), (11, '11', 11.11), (12, '12', 12.12), (13, '13', 13.13),
     (14, '14', 14.14), (15, '15', 15.15), (16, '16', 16.16);
call SYSCS_UTIL.SYSCS_COMPRESS_TABLE('APP', 'INDEXES', 0);
select * from indexes;
insert into indexes values (17, '17', 17.17), (18, '18', 18.18);
call SYSCS_UTIL.SYSCS_COMPRESS_TABLE('APP', 'INDEXES', 0);
select * from indexes;
-- do consistency check on scans, etc.
values ConsistencyChecker();
rollback;

-- primary/foreign keys
create table p (c1 char(1), y int not null, c2 char(1) not null, x int not null, constraint pk primary key(x,y));
create table f (x int, t int, y int, constraint fk foreign key (x,y) references p);
insert into p values ('1', 1, '1', 1);
insert into f values (1, 1, 1), (1, 1, null);
call SYSCS_UTIL.SYSCS_COMPRESS_TABLE('APP', 'P', 0);
call SYSCS_UTIL.SYSCS_COMPRESS_TABLE('APP', 'F', 0);
insert into f values (1, 1, 1);
insert into f values (2, 2, 2);
insert into p values ('2', 2, '2', 2);
insert into f values (2, 2, 2);
-- do consistency check on scans, etc.
values ConsistencyChecker();
rollback;

-- self referencing table
create table pf (x int not null constraint p primary key, y int constraint f references pf);
insert into pf values (1,1), (2, 2);
call SYSCS_UTIL.SYSCS_COMPRESS_TABLE('APP', 'PF', 0);
insert into pf values (3,1), (4, 2);
insert into pf values (3,1);
insert into pf values (5,6);
-- do consistency check on scans, etc.
values ConsistencyChecker();
rollback;

-- multiple indexes on same column
call SYSCS_UTIL.SYSCS_SET_DATABASE_PROPERTY('derby.storage.pageSize','4096');
create table t (i int, s varchar(1500));
create index t_s on t(s);
create index t_si on t(s, i);
insert into t values (1, '1'), (2, '2');
call SYSCS_UTIL.SYSCS_COMPRESS_TABLE('APP', 'T', 0);
select * from t;
-- do consistency check on scans, etc.
values ConsistencyChecker();
rollback;

-- verify statements get re-prepared
create table t(c1 int, c2 int);
insert into t values (1, 2), (3, 4), (5, 6);
prepare p1 as 'select * from t where c2 = 4';
execute p1;
prepare s as 'select * from t where c2 = 6';
execute s;
call SYSCS_UTIL.SYSCS_COMPRESS_TABLE('APP', 'T', 0);
execute p1;
execute s;
remove p1;
remove s;
-- do consistency check on scans, etc.
values ConsistencyChecker();
rollback;

-- verify that space getting reclaimed
call SYSCS_UTIL.SYSCS_SET_DATABASE_PROPERTY('derby.storage.pageSize','4096');
create table t(c1 int, c2 varchar(1500));
insert into t values (1,PADSTRING('1', 1500)), (2,PADSTRING('2', 1500)), (3,PADSTRING('3', 1500)), (4, PADSTRING('4', 1500)),
	(5, PADSTRING('5', 1500)), (6, PADSTRING('6', 1500)), (7, PADSTRING('7', 1500)), (8, PADSTRING('8', 1500));
create table oldinfo (cname varchar(128), nap bigint);
insert into oldinfo select conglomeratename, numallocatedpages from new org.apache.derby.diag.SpaceTable('T') t;
delete from t where c1 in (1, 3, 5, 7);
call SYSCS_UTIL.SYSCS_COMPRESS_TABLE('APP', 'T', 0);
create table newinfo (cname varchar(128), nap bigint);
insert into newinfo select conglomeratename, numallocatedpages from new org.apache.derby.diag.SpaceTable('T') t;
-- verify space reclaimed, this query should return 'compressed!'
-- if nothing is returned from this query, then the table was not compressed
select 'compressed!' from oldinfo o, newinfo n where o.cname = n.cname and o.nap > n.nap;
rollback;

-- sequential
-- no indexes
-- empty table
call SYSCS_UTIL.SYSCS_COMPRESS_TABLE('APP', 'NOINDEXES', 1);
select * from v_noindexes;
-- full table
insert into noindexes values (1, '1', 1.1), (2, '2', 2.2), (3, '3', 3.3),
     (4, '4', 4.4), (5, '5', 5.5), (6, '6', 6.6), (7, '7', 7.7);
call SYSCS_UTIL.SYSCS_COMPRESS_TABLE('APP', 'NOINDEXES', 1);
select * from v_noindexes;
insert into noindexes values (8, '8', 8.8), (8, '8', 8.8), (9, '9', 9.9),
     (10, '10', 10.10), (11, '11', 11.11), (12, '12', 12.12), (13, '13', 13.13),
     (14, '14', 14.14), (15, '15', 15.15), (16, '16', 16.16);
call SYSCS_UTIL.SYSCS_COMPRESS_TABLE('APP', 'NOINDEXES', 1);
select * from v_noindexes;
insert into noindexes values (17, '17', 17.17), (18, '18', 18.18);
call SYSCS_UTIL.SYSCS_COMPRESS_TABLE('APP', 'NOINDEXES', 1);
select * from v_noindexes;
rollback;

-- 1 index
drop index i_c2;
drop index i_c3;
drop index i_c2c1;
drop index i_c3c1;
-- empty table
call SYSCS_UTIL.SYSCS_COMPRESS_TABLE('APP', 'INDEXES', 1);
select * from indexes;
-- full table
insert into indexes values (1, '1', 1.1), (2, '2', 2.2), (3, '3', 3.3),
     (4, '4', 4.4), (5, '5', 5.5), (6, '6', 6.6), (7, '7', 7.7);
call SYSCS_UTIL.SYSCS_COMPRESS_TABLE('APP', 'INDEXES', 1);
select * from indexes;
insert into indexes values (8, '8', 8.8), (8, '8', 8.8), (9, '9', 9.9),
     (10, '10', 10.10), (11, '11', 11.11), (12, '12', 12.12), (13, '13', 13.13),
     (14, '14', 14.14), (15, '15', 15.15), (16, '16', 16.16);
call SYSCS_UTIL.SYSCS_COMPRESS_TABLE('APP', 'INDEXES', 1);
select * from indexes;
insert into indexes values (17, '17', 17.17), (18, '18', 18.18);
call SYSCS_UTIL.SYSCS_COMPRESS_TABLE('APP', 'INDEXES', 1);
select * from indexes;
rollback;

-- multiple indexes
-- empty table
call SYSCS_UTIL.SYSCS_COMPRESS_TABLE('APP', 'INDEXES', 1);
select * from indexes;
-- full table
insert into indexes values (1, '1', 1.1), (2, '2', 2.2), (3, '3', 3.3),
     (4, '4', 4.4), (5, '5', 5.5), (6, '6', 6.6), (7, '7', 7.7);
call SYSCS_UTIL.SYSCS_COMPRESS_TABLE('APP', 'INDEXES', 1);
select * from indexes;
insert into indexes values (8, '8', 8.8), (8, '8', 8.8), (9, '9', 9.9),
     (10, '10', 10.10), (11, '11', 11.11), (12, '12', 12.12), (13, '13', 13.13),
     (14, '14', 14.14), (15, '15', 15.15), (16, '16', 16.16);
call SYSCS_UTIL.SYSCS_COMPRESS_TABLE('APP', 'INDEXES', 1);
select * from indexes;
insert into indexes values (17, '17', 17.17), (18, '18', 18.18);
call SYSCS_UTIL.SYSCS_COMPRESS_TABLE('APP', 'INDEXES', 1);
select * from indexes;
rollback;

--table with multiple indexes, indexes share columns
--table has more than 4 rows
-- multiple indexes on same column
call SYSCS_UTIL.SYSCS_SET_DATABASE_PROPERTY('derby.storage.pageSize','4096');
create table tab (a int, b int, s varchar(1500));
create index i_a on tab(a);
create index i_s on tab(s);
create index i_ab on tab(a, b);
insert into tab values (1, 1, 'abc'), (2, 2,  'bcd');
insert into tab values (3, 3, 'abc'), (4, 4,  'bcd');
insert into tab values (5, 5, 'abc'), (6, 6,  'bcd');
insert into tab values (7, 7, 'abc'), (8, 8,  'bcd');
call SYSCS_UTIL.SYSCS_COMPRESS_TABLE('APP', 'TAB', 1);
select * from tab;
-- do consistency check on scans, etc.
values ConsistencyChecker();
--record the number of rows
create table oldstat(rowCount int);
insert into oldstat select count(*) from tab;
commit;
--double the size of the table
select conglomeratename, numallocatedpages from new org.apache.derby.diag.SpaceTable('TAB') tab;
insert into tab values (1, 1, 'abc'), (2, 2,  'bcd');
insert into tab values (3, 3, 'abc'), (4, 4,  'bcd');
insert into tab values (5, 5, 'abc'), (6, 6,  'bcd');
insert into tab values (7, 7, 'abc'), (8, 8,  'bcd');
select conglomeratename, numallocatedpages from new org.apache.derby.diag.SpaceTable('TAB') tab;
delete from tab;
select conglomeratename, numallocatedpages from new org.apache.derby.diag.SpaceTable('TAB') tab;
call SYSCS_UTIL.SYSCS_COMPRESS_TABLE('APP', 'TAB', 0);
-- verify space reclaimed
select conglomeratename, numallocatedpages from new org.apache.derby.diag.SpaceTable('TAB') tab;
-- do consistency check on scans, etc.
values  ConsistencyChecker();
rollback;
--record the number of rows
create table newstat(rowCount int);
insert into newstat select count(*) from tab;
--make sure the number of rows are the same
select o.rowCount, n.rowCount from oldstat o, newstat n where o.rowCount = n.rowCount;
--show old space usage
select conglomeratename, numallocatedpages from new org.apache.derby.diag.SpaceTable('TAB') tab;
call SYSCS_UTIL.SYSCS_COMPRESS_TABLE('APP', 'TAB', 0);
--show new space usage
select conglomeratename, numallocatedpages from new org.apache.derby.diag.SpaceTable('TAB') tab;
rollback;
drop table tab;
drop table oldstat;

-- test that many levels of aborts of compress table still work
call SYSCS_UTIL.SYSCS_SET_DATABASE_PROPERTY('derby.storage.pageSize','4096');
create table xena (a int, b int, c varchar(1000), d varchar(8000));
create index xena_idx1 on xena (a, c);
create unique index xena_idx2 on xena (b, c);
insert into xena values (1, 1, 'argo', 'horse');
insert into xena values (1, -1, 'argo', 'horse');
insert into xena values (2, 2, 'ares', 'god of war');
insert into xena values (2, -2, 'ares', 'god of war');
insert into xena values (3, 3, 'joxer', 'the mighty');
insert into xena values (4, -4, 'gabrielle', 'side kick');
insert into xena values (4, 4, 'gabrielle', 'side kick');

select 
    conglomeratename, isindex, 
    numallocatedpages, numfreepages, 
    pagesize, estimspacesaving

    from new org.apache.derby.diag.SpaceTable('XENA') t
        order by conglomeratename;

commit;

delete from xena where b = 1;

call SYSCS_UTIL.SYSCS_COMPRESS_TABLE('APP', 'XENA', 0);
select 
     cast (conglomeratename as char(10)) as name, 
     cast (numallocatedpages as char(4)) as aloc, 
     cast (numfreepages as char(4))      as free, 
     cast (estimspacesaving as char(10)) as est
        from new org.apache.derby.diag.SpaceTable('XENA') t order by name;

create table xena2(a int);

delete from xena where b = 2;
select 
     cast (conglomeratename as char(10)) as name, 
     cast (numallocatedpages as char(4)) as aloc, 
     cast (numfreepages as char(4))      as free, 
     cast (estimspacesaving as char(10)) as est
        from new org.apache.derby.diag.SpaceTable('XENA') t order by name;
call SYSCS_UTIL.SYSCS_COMPRESS_TABLE('APP', 'XENA', 0);
select 
     cast (conglomeratename as char(10)) as name, 
     cast (numallocatedpages as char(4)) as aloc, 
     cast (numfreepages as char(4))      as free, 
     cast (estimspacesaving as char(10)) as est
        from new org.apache.derby.diag.SpaceTable('XENA') t order by name;

create table xena3(a int);

delete from xena where b = 3;
select 
     cast (conglomeratename as char(10)) as name, 
     cast (numallocatedpages as char(4)) as aloc, 
     cast (numfreepages as char(4))      as free, 
     cast (estimspacesaving as char(10)) as est
        from new org.apache.derby.diag.SpaceTable('XENA') t order by name;
call SYSCS_UTIL.SYSCS_COMPRESS_TABLE('APP', 'XENA', 0);
select 
     cast (conglomeratename as char(10)) as name, 
     cast (numallocatedpages as char(4)) as aloc, 
     cast (numfreepages as char(4))      as free, 
     cast (estimspacesaving as char(10)) as est
        from new org.apache.derby.diag.SpaceTable('XENA') t order by name;

create table xena4(a int);

delete from xena where b = 4;
select 
     cast (conglomeratename as char(10)) as name, 
     cast (numallocatedpages as char(4)) as aloc, 
     cast (numfreepages as char(4))      as free, 
     cast (estimspacesaving as char(10)) as est
        from new org.apache.derby.diag.SpaceTable('XENA') t order by name;
call SYSCS_UTIL.SYSCS_COMPRESS_TABLE('APP', 'XENA', 0);
select 
     cast (conglomeratename as char(10)) as name, 
     cast (numallocatedpages as char(4)) as aloc, 
     cast (numfreepages as char(4))      as free, 
     cast (estimspacesaving as char(10)) as est
        from new org.apache.derby.diag.SpaceTable('XENA') t order by name;

create table xena5(a int);

rollback;

-- should all fail
drop table xena2;
drop table xena3;

select a, b from xena;

-- read every row and value in the table, including overflow pages.
insert into xena values (select a + 4, b - 4, c, d from xena);
insert into xena values (select (a + 4, b - 4, c, d from xena);

select 
     cast (conglomeratename as char(10)) as name, 
     cast (numallocatedpages as char(4)) as aloc, 
     cast (numfreepages as char(4))      as free, 
     cast (estimspacesaving as char(10)) as est
        from new org.apache.derby.diag.SpaceTable('XENA') t order by name;

-- delete all but 1 row (the sidekick)
delete from xena where a <> 4 or b <> -4;
select 
     cast (conglomeratename as char(10)) as name, 
     cast (numallocatedpages as char(4)) as aloc, 
     cast (numfreepages as char(4))      as free, 
     cast (estimspacesaving as char(10)) as est
        from new org.apache.derby.diag.SpaceTable('XENA') t order by name;
call SYSCS_UTIL.SYSCS_COMPRESS_TABLE('APP', 'XENA', 0);

select 
     cast (conglomeratename as char(10)) as name, 
     cast (numallocatedpages as char(4)) as aloc, 
     cast (numfreepages as char(4))      as free, 
     cast (estimspacesaving as char(10)) as est
        from new org.apache.derby.diag.SpaceTable('XENA') t order by name;

rollback;

select a, b from xena;


drop table xena;

-- bug 2940
call SYSCS_UTIL.SYSCS_SET_DATABASE_PROPERTY('derby.storage.pageSize','4096');
create table xena (a int, b int, c varchar(1000), d varchar(8000));
insert into xena values (1, 1, 'argo', 'horse');
insert into xena values (2, 2, 'beta', 'mule');
insert into xena values (3, 3, 'comma', 'horse');
insert into xena values (4, 4, 'delta', 'goat');
insert into xena values (1, 1, 'x_argo', 'x_horse');
insert into xena values (2, 2, 'x_beta', 'x_mule');
insert into xena values (3, 3, 'x_comma', 'x_horse');
insert into xena values (4, 4, 'x_delta', 'x_goat');
autocommit off;

call SYSCS_UTIL.SYSCS_COMPRESS_TABLE('APP', 'XENA', 0);
commit;
call SYSCS_UTIL.SYSCS_SET_DATABASE_PROPERTY('derby.storage.pageSize','4000');
create unique index xena1 on xena (a, c);
call SYSCS_UTIL.SYSCS_SET_DATABASE_PROPERTY('derby.storage.pageSize','20000');
create unique index xena2 on xena (a, d);
create unique index xena3 on xena (c, d);
call SYSCS_UTIL.SYSCS_COMPRESS_TABLE('APP', 'XENA', 0);
select * from xena;
call SYSCS_UTIL.SYSCS_COMPRESS_TABLE('APP', 'XENA', 0);
select * from xena;
rollback;

select 
     cast (conglomeratename as char(10)) as name, 
     cast (numallocatedpages as char(4)) as aloc, 
     cast (numfreepages as char(4))      as free, 
     cast (estimspacesaving as char(10)) as est
        from new org.apache.derby.diag.SpaceTable('XENA') t order by name;
select schemaname, tablename, 
SYSCS_UTIL.SYSCS_CHECK_TABLE(schemaname, tablename)
 from sys.systables a,  sys.sysschemas b where a.schemaid = b.schemaid
order by schemaname, tablename;

select a, b from xena;

-- clean up
drop function padstring;
drop view v_noindexes;
drop table noindexes;
drop table indexes;
drop table oldconglom;
drop table newconglom;

--test case for bug (DERBY-437)
--test compress table with reserved words as table Name/schema Name
create schema "Group";
create table "Group"."Order"("select" int, "delete" int, itemName char(20)) ;
insert into "Group"."Order" values(1, 2, 'memory') ;
insert into "Group"."Order" values(3, 4, 'disk') ;
insert into "Group"."Order" values(5, 6, 'mouse') ;

--following compress call should fail because schema name is not matching the way it is defined using delimited quotes.
call SYSCS_UTIL.SYSCS_COMPRESS_TABLE('GROUP', 'Order' , 0) ;
--following compress call should fail because table name is not matching the way it is defined in the quotes.
call SYSCS_UTIL.SYSCS_COMPRESS_TABLE('Group', 'ORDER' , 0) ;

--following compress should pass.
call SYSCS_UTIL.SYSCS_COMPRESS_TABLE('Group', 'Order' , 0) ;
call SYSCS_UTIL.SYSCS_COMPRESS_TABLE('Group', 'Order' , 1) ;
drop table "Group"."Order";
drop schema "Group" RESTRICT;
---test undelimited names( All unquoted SQL identfiers should be passed in upper case). 
create schema inventory;
create table inventory.orderTable(id int, amount int, itemName char(20)) ;
insert into inventory.orderTable values(101, 5, 'pizza') ;
insert into inventory.orderTable values(102, 6, 'coke') ;
insert into inventory.orderTable values(103, 7, 'break sticks') ;
insert into inventory.orderTable values(104, 8, 'buffolo wings') ;

--following compress should fail because schema name is not in upper case.
call SYSCS_UTIL.SYSCS_COMPRESS_TABLE('inventory', 'ORDERTABLE' , 0) ;
--following compress should fail because table name is not in upper case.
call SYSCS_UTIL.SYSCS_COMPRESS_TABLE('INVENTORY', 'ordertable', 0) ;

--following compress should pass.
call SYSCS_UTIL.SYSCS_COMPRESS_TABLE('INVENTORY', 'ORDERTABLE' , 1) ;

drop table inventory.orderTable;
drop schema inventory RESTRICT;
--end derby-437 related test cases.

-- test case for derby-1854 
-- perform compress on a table that has same column 
-- as a primary key and a foreign key.  

create table users (
 user_id int not null generated by default as identity,
 user_login varchar(255) not null,
 primary key (user_id));

create table admins (
 user_id int not null,
 primary key (user_id),
 constraint admin_uid_fk foreign key (user_id) references users (user_id));
 
insert into users (user_login) values('test1');
insert into admins values (values identity_val_local());
call syscs_util.syscs_compress_table('APP', 'ADMINS', 0);
-- do consistency check on the tables.
values SYSCS_UTIL.SYSCS_CHECK_TABLE('APP', 'USERS');
values SYSCS_UTIL.SYSCS_CHECK_TABLE('APP', 'ADMINS');
select * from admins; 
select * from users;
insert into users (user_login) values('test2');
insert into admins values (values identity_val_local());
drop table admins;
drop table users;
-- end derby-1854 test case. 

-- test case for derby-737 
-- perform compress on a table that has some indexes with no statistics
create table derby737table1 (c1 int, c2 int); 
select * from sys.sysstatistics;
-- create index on the table when the table is empty. No statistics will be
--  generated for that index
create index t1i1 on derby737table1(c1);
select * from sys.sysstatistics;
-- the insert above will not add a row into sys.sysstatistics for index t1i1
insert into derby737table1 values(1,1);
select * from sys.sysstatistics;
-- now compress the table and as part of the compress, Derby should generate
--  statistics for all the indexes provided the table is not empty
call syscs_util.syscs_compress_table('APP','DERBY737TABLE1',1);
-- Will find statistics for index t1i1 on derby737table1 because compress
--  table created it.
select * from sys.sysstatistics;
drop table derby737table1;
-- Next Test : Make sure that drop index will drop the existing statistics 
create table derby737table2 (c1 int, c2 int); 
insert into derby737table2 values(1,1),(2,2);
select * from sys.sysstatistics;
-- since there is data in derby737table2 when index is getting created, 
--   statistics will be created for that index 
create index t2i1 on derby737table2(c1);
select * from sys.sysstatistics;
-- deleting all the rows in table will not drop the index statistics
delete from derby737table2;
select * from sys.sysstatistics;
-- dropping index will drop the index statistics, if they exist
drop index t2i1;
select * from sys.sysstatistics;
-- Next Test : Male sure that compress table will drop the existing statistics
--  and will not recreate them if the table is empty
insert into derby737table2 values(1,1),(2,2);
select * from sys.sysstatistics;
-- since there is data in derby737table2 when index is getting created, 
--   statistics will be created for that index 
create index t2i1 on derby737table2(c1);
select * from sys.sysstatistics;
-- deleting all the rows in table will not drop the index statistics
delete from derby737table2;
select * from sys.sysstatistics;
-- now compress the table and as part of the compress, Derby should drop
--  statistics for all the indexes and should not recreate them if the
--  user table is empty
call syscs_util.syscs_compress_table('APP','DERBY737TABLE2',1);
select * from sys.sysstatistics;

--end derby-737 related test cases.
