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added compress/uncompress function

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sql/mysql_priv.h:
  added have_compress variable
sql/mysqld.cc:
  added have_compress variable
sql/set_var.cc:
  added have_compress variable
This commit is contained in:
unknown
2003-04-09 20:50:30 -04:00
parent 90527436fa
commit 75bdeb1b21
38 changed files with 332 additions and 2 deletions
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20
mysql-test/t/func_compress.test Normal file
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@@ -0,0 +1,20 @@
-- source include/have_compress.inc
#
# Test for compress and uncompress functions:
#
select @test_compress_string:='string for test compress function aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa ';
select length(@test_compress_string);
select uncompress(compress(@test_compress_string));
select uncompress(@test_compress_string);
select uncompressed_length(compress(@test_compress_string))=length(@test_compress_string);
select uncompressed_length(compress(@test_compress_string));
select length(compress(@test_compress_string))<length(@test_compress_string);
create table t1 (a text, b char(255), c char(4)) type=myisam;
insert into t1 (a,b,c) values (compress(@test_compress_string),compress(@test_compress_string),'d ');
select uncompress(a) from t1;
select uncompress(b) from t1;
select concat('|',c,'|') from t1;
drop table t1;