128 lines
3.8 KiB
Plaintext
128 lines
3.8 KiB
Plaintext
set @is_enable_default = @@global.ndb_index_stat_enable;
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set @is_enable = 1;
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set @is_enable = NULL;
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# is_enable_on=0 is_enable_off=0
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# ndb_index_stat_enable - before
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show global variables like 'ndb_index_stat_enable';
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Variable_name Value
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ndb_index_stat_enable ON
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show local variables like 'ndb_index_stat_enable';
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Variable_name Value
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ndb_index_stat_enable ON
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# ndb_index_stat_enable - after
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show global variables like 'ndb_index_stat_enable';
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Variable_name Value
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ndb_index_stat_enable ON
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show local variables like 'ndb_index_stat_enable';
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Variable_name Value
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ndb_index_stat_enable ON
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create table record_in_range(no int primary key auto_increment,
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query varchar(256), part_count int,
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explain_rows int, count_rows int) engine = myisam;
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CREATE TABLE t1(
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K INT NOT NULL AUTO_INCREMENT,
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I INT,
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J INT,
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L INT,
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PRIMARY KEY(K),
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KEY(I,J),
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KEY(L)
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) ENGINE=ndbcluster
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partition by key (K) partitions 1;
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INSERT INTO t1(I,J,L) VALUES
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(1,1,1),(2,2,2),(3,3,3),(4,4,4),(5,5,5),
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(6,6,6),(7,7,7),(8,8,8),(9,9,9),(0,0,0);
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INSERT INTO t1(I,J,L) SELECT I,1,I FROM t1 ORDER BY K;
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INSERT INTO t1(I,J,L) SELECT I,2,I FROM t1 ORDER BY K;
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INSERT INTO t1(I,J,L) SELECT I,3,I FROM t1 ORDER BY K;
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INSERT INTO t1(I,J,L) SELECT I,4,I FROM t1 ORDER BY K;
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INSERT INTO t1(I,J,L) SELECT I,5,I FROM t1 ORDER BY K;
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INSERT INTO t1(I,J,L) SELECT I,6,I FROM t1 ORDER BY K;
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INSERT INTO t1(I,J,L) SELECT I,7,I FROM t1 ORDER BY K;
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INSERT INTO t1(I,J,L) SELECT I,8,I FROM t1 ORDER BY K;
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INSERT INTO t1(I,J,L) SELECT I,9,I FROM t1 ORDER BY K;
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select i, count(*) from t1 group by 1 order by 1;
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i count(*)
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0 512
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1 512
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2 512
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3 512
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4 512
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5 512
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6 512
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7 512
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8 512
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9 512
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select l, count(*) from t1 group by 1 order by 1;
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l count(*)
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0 512
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1 512
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2 512
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3 512
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4 512
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5 512
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6 512
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7 512
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8 512
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9 512
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ANALYZE TABLE t1;
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Table Op Msg_type Msg_text
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test.t1 analyze status OK
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Table Op Msg_type Msg_text
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test.t1 analyze status OK
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select distinct
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substring(rr.query from INSTR(rr.query, 'WHERE')) as 'WHERE',
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count_rows,
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p1.val as p1_val,
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if(p8.err_pct is not null and abs(p8.err_pct)<45,'-',p8.val) p8_val,
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case when p1.err_pct is null then '-' when abs(p1.err_pct)<45 then '<45' else p1.err_pct end p1_err_pct,
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case when p8.err_pct is null then '-' when abs(p8.err_pct)<45 then '<45' else p8.err_pct end p8_err_pct
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from record_in_range rr,
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(select query, explain_rows as val, if(count_rows>0,floor(100*(explain_rows - count_rows) / count_rows),NULL) err_pct
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from record_in_range p where part_count = 1) p1,
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(select query, explain_rows as val, if(count_rows>0,floor(100*(explain_rows - count_rows) / count_rows),NULL) err_pct
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from record_in_range p where part_count = 8) p8
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where rr.query = p1.query
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and rr.query = p8.query
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order by rr.no;
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WHERE count_rows p1_val p8_val p1_err_pct p8_err_pct
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WHERE i = 10 0 2 2 - -
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WHERE i = 9 512 512 - <45 <45
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WHERE i = 8 512 512 - <45 <45
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WHERE i = 7 512 512 - <45 <45
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WHERE i = 6 512 512 - <45 <45
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WHERE i = 5 512 512 - <45 <45
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WHERE i = 4 512 512 - <45 <45
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WHERE i = 3 512 512 - <45 <45
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WHERE i = 2 512 512 - <45 <45
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WHERE i = 1 512 512 - <45 <45
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WHERE l = 10 0 2 2 - -
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WHERE l = 9 512 512 - <45 <45
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WHERE l = 8 512 512 - <45 <45
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WHERE l = 7 512 512 - <45 <45
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WHERE l = 6 512 512 - <45 <45
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WHERE l = 5 512 512 - <45 <45
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WHERE l = 4 512 512 - <45 <45
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WHERE l = 3 512 512 - <45 <45
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WHERE l = 2 512 512 - <45 <45
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WHERE l = 1 512 512 - <45 <45
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DROP TABLE t1, record_in_range;
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End of 5.1 tests
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set @is_enable = @is_enable_default;
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set @is_enable = NULL;
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# is_enable_on=0 is_enable_off=0
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# ndb_index_stat_enable - before
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show global variables like 'ndb_index_stat_enable';
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Variable_name Value
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ndb_index_stat_enable ON
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show local variables like 'ndb_index_stat_enable';
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Variable_name Value
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ndb_index_stat_enable ON
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# ndb_index_stat_enable - after
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show global variables like 'ndb_index_stat_enable';
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Variable_name Value
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ndb_index_stat_enable ON
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show local variables like 'ndb_index_stat_enable';
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Variable_name Value
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ndb_index_stat_enable ON
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