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Diffstat (limited to 'mysql-test/main/order_by_pack_big.test')
| -rw-r--r-- | mysql-test/main/order_by_pack_big.test | 185 |
1 files changed, 185 insertions, 0 deletions
diff --git a/mysql-test/main/order_by_pack_big.test b/mysql-test/main/order_by_pack_big.test new file mode 100644 index 00000000000..dce7bcb905c --- /dev/null +++ b/mysql-test/main/order_by_pack_big.test @@ -0,0 +1,185 @@ +--source include/big_test.inc +--source include/have_sequence.inc +--source include/have_64bit.inc + +set @save_rand_seed1= @@RAND_SEED1; +set @save_rand_seed2= @@RAND_SEED2; +set @@RAND_SEED1=810763568, @@RAND_SEED2=600681772; + +create table t1(a int); +insert into t1 select seq from seq_1_to_10000 order by rand(),seq; +delimiter |; + +--echo # +--echo # parameters: +--echo # mean mean for the column to be considered +--echo # max_val max_value for the column to be considered +--echo # +--echo # This function generate a sample of a normal distribution +--echo # This function return a point +--echo # of the normal distribution with a given mean. +--echo # + +CREATE FUNCTION +generate_normal_distribution_sample(mean DOUBLE, max_val DOUBLE)RETURNS DOUBLE +BEGIN + DECLARE z DOUBLE DEFAULT 0; + SET z= (rand() + rand() + rand() + rand() + rand() + rand())/6; + SET z= 2*(max_val-mean)*z; + SET z= z + mean - (max_val-mean); + return z; +END| + +--echo # +--echo # parameters: +--echo # len length of the random string to be generated +--echo # +--echo # This function generates a random string for the length passed +--echo # as an argument with characters in the range of [A,Z] +--echo # + +CREATE FUNCTION generate_random_string(len INT) RETURNS varchar(128) +BEGIN + DECLARE str VARCHAR(256) DEFAULT ''; + DECLARE x INT DEFAULT 0; + WHILE (len > 0) DO + SET x =round(rand()*25); + SET str= CONCAT(str, CHAR(65 + x)); + SET len= len-1; + END WHILE; +RETURN str; +END| + +--echo # +--echo # parameters: +--echo # mean mean for the column to be considered +--echo # min_val min_value for the column to be considered +--echo # max_val max_value for the column to be considered +--echo # +--echo # This function generate a normal distribution sample in the range of +--echo # [min_val, max_val] +--echo # + +CREATE FUNCTION +clipped_normal_distribution(mean DOUBLE, min_val DOUBLE, max_val DOUBLE) +RETURNS INT +BEGIN + DECLARE r DOUBLE DEFAULT 0; + WHILE 1=1 DO + set r= generate_normal_distribution_sample(mean, max_val); + IF (r >= min_val AND r <= max_val) THEN + RETURN round(r); + end if; + END WHILE; + RETURN 0; +END| + +delimiter ;| + +create table t2 (id INT NOT NULL, a INT, b int); +insert into t2 +select a, clipped_normal_distribution(12, 0, 64), + clipped_normal_distribution(32, 0, 128) +from t1; + +CREATE TABLE t3( + id INT NOT NULL, + names VARCHAR(64), + address VARCHAR(128), + PRIMARY KEY (id) +); + +--echo # +--echo # table t3 stores random strings calculated from the length stored in +--echo # table t2 +--echo # + +insert into t3 +select id, generate_random_string(a), generate_random_string(b) from t2; + + +let $query= select id DIV 100 as x, + MD5(group_concat(substring(names,1,3), substring(address,1,3) + order by id)) + FROM t3 + GROUP BY x; + +--echo # +--echo # All records fit in memory +--echo # + +set sort_buffer_size=262144*10; +--source include/analyze-format.inc +eval analyze format=json $query; +flush status; +eval $query; +show status like '%sort%'; +set sort_buffer_size=default; + +--echo # +--echo # Test for merge_many_buff +--echo # + +set sort_buffer_size=32768; +--source include/analyze-format.inc +eval analyze format=json $query; +flush status; +eval $query; +show status like '%sort%'; +set sort_buffer_size=default; + +--echo # +--echo # CASE #1 Packed sort keys with addon fields +--echo # + +ALTER TABLE t3 ADD INDEX idx(names, address); + +let $file1 = `SELECT CONCAT(@@datadir, "t1.txt")`; +let $file2 = `SELECT CONCAT(@@datadir, "t2.txt")`; + +set sort_buffer_size= 2097152; +--source include/analyze-format.inc +eval ANALYZE FORMAT=JSON SELECT id, names, address FROM t3 ORDER BY names, address; +flush status; +evalp SELECT id, names, address INTO OUTFILE '$file1' FROM t3 ORDER BY names, address; + +--echo # Sort_merge_passes should be 0 +show status like '%sort%'; + +evalp SELECT id, names, address INTO OUTFILE '$file2' FROM t3 FORCE INDEX(idx) ORDER BY names, address; + +diff_files $file1 $file2; + +--remove_file $file1 + +--echo # +--echo # CASE #2 Packed sort keys and ROW_ID +--echo # + +set @save_max_length_for_sort_data=@@max_length_for_sort_data; +set max_length_for_sort_data= 300; + +set sort_buffer_size= 1097152; +--source include/analyze-format.inc +eval ANALYZE FORMAT=JSON SELECT id, names, address FROM t3 ORDER BY names, address; +flush status; +evalp SELECT id, names, address INTO OUTFILE '$file1' FROM t3 ORDER BY names, address; + +--echo # Sort_merge_passes should be 0 +show status like '%sort%'; + +diff_files $file1 $file2; + +--remove_file $file1 +--remove_file $file2 + +set @@max_length_for_sort_data=@save_max_length_for_sort_data; +set @@sort_buffer_size=default; + +set @@RAND_SEED1= @save_rand_seed1; +set @@RAND_SEED2= @save_rand_seed2; + +drop function generate_normal_distribution_sample; +drop function generate_random_string; +drop function clipped_normal_distribution; +drop table t1, t2, t3; |