Commit ac77076f authored by monty@donna.mysql.fi's avatar monty@donna.mysql.fi

Fixed bug with HEAP tables when using LIKE

parent 801259b6
......@@ -519,6 +519,7 @@ BDB or Berkeley_DB Tables
* BDB start::
* BDB characteristic::
* BDB TODO::
* BDB portability::
* BDB errors::
GEMINI Tables
......@@ -7467,11 +7468,6 @@ that you also probably need to raise the @code{core file size} by adding
@code{ulimit -c 1000000} to @code{safe_mysqld} or starting @code{safe_mysqld}
with @code{--core-file-sizes=1000000}. @xref{safe_mysqld}.
@c the stuff below is really out of date - hardly anybody uses it anymore
If you are using LinuxThreads and @code{mysqladmin shutdown} doesn't work,
you must upgrade to LinuxThreads Version 0.7.1 or newer.
To get a core dump on Linux if mysqld dies with a SIGSEGV signal, you can
start mysqld with the @code{--core-file} option. Note that you also probably
need to raise the @code{core file size} by adding @code{ulimit -c 1000000} to
......@@ -23905,6 +23901,7 @@ SUM_OVER_ALL_KEYS(max_length_of_key + sizeof(char*) * 2)
* BDB start::
* BDB characteristic::
* BDB TODO::
* BDB portability::
* BDB errors::
@end menu
......@@ -23923,12 +23920,26 @@ distribution that has a couple of small patches to make it work more
smoothly with @strong{MySQL}. You can't use a not-patched @code{BDB}
version with @strong{MySQL}.
We at MySQL AB are working in close cooperating with Sleepycat to
keep the quality of the @strong{MySQL} - BDB interface high.
When it comes to supporting BDB tables, we are committed to help our
users to locate the problem and help creating a reproducable test case
for any problems involving BDB tables. Any such test case will be
forwarded to Sleepycat who in turn will help us find and fix the
problem. As this is a two stage operating, any problems with BDB tables
may take a little longer for us to fix than for other table handlers,
but as the Berkeley code itself has been used by many other applications
than @strong{MySQL} we don't envision any big problems with this.
@xref{Table handler support}.
@node BDB install, BDB start, BDB overview, BDB
@subsection Installing BDB
If you have downloaded a binary version of @strong{MySQL} that includes
support for Berkeley DB, simply follow the instructions for
installing a binary version of @strong{MySQL}. @xref{Installing binary}.
@xref{mysqld-max}.
To compile @strong{MySQL} with Berkeley DB support, download @strong{MySQL}
3.23.34 or newer and configure @code{MySQL} with the
......@@ -24076,7 +24087,7 @@ contrast with @code{MyISAM} and @code{ISAM} tables where mysqld will
wait for enough free disk before continuing.
@end itemize
@node BDB TODO, BDB errors, BDB characteristic, BDB
@node BDB TODO, BDB portability, BDB characteristic, BDB
@subsection Some things we need to fix for BDB in the near future:
@itemize @bullet
......@@ -24094,7 +24105,47 @@ Optimize performance.
Change to not use page locks at all when we are scanning tables.
@end itemize
@node BDB errors, , BDB TODO, BDB
@node BDB portability, BDB errors, BDB TODO, BDB
@subsection Operating systems supported by @strong{BDB}
If you after having built @strong{MySQL} with support for BDB tables get
the following error in the log file when you start @code{mysqld}:
@example
bdb: architecture lacks fast mutexes: applications cannot be threaded
Can't init dtabases
@end example
This means that @code{BDB} tables are not supported for your architecture.
In this case you have to rebuild @strong{MySQL} without BDB table support.
NOTE: The following list is not complete; We will update this as we get
more information about this.
Currently we know that BDB tables works with the following operating
system.
@itemize @bullet
@item
Linux 2.x intel
@item
Solaris sparc
@item
SCO OpenServer
@item
SCO UnixWare 7.0.1
@end itemize
It doesn't work with the following operating systems:
@itemize @bullet
@item
Linux 2.x Alpha
@item
Max OS X
@end itemize
@node BDB errors, , BDB portability, BDB
@subsection Errors You May Get When Using BDB Tables
@itemize @bullet
......@@ -42938,6 +42989,8 @@ not yet 100% confident in this code.
@appendixsubsec Changes in release 3.23.37
@itemize @bullet
@item
Fixed a bug when using @code{HEAP} tables with @code{LIKE}.
@item
Added @code{--mysql-version} to @code{safe_mysqld}
@item
Changed @code{INNOBASE} to @code{INNODB} (because the @code{INNOBASE}
......@@ -78,3 +78,10 @@ f1 f2
12 ted
12 ted
12 ted
table type possible_keys key key_len ref rows Extra
t1 range btn btn 10 NULL 10 where used
btn
table type possible_keys key key_len ref rows Extra
t1 ALL btn NULL NULL NULL 14 where used
table type possible_keys key key_len ref rows Extra
t1 ref btn btn 11 const,const 10 where used
......@@ -2,6 +2,7 @@
# Test of heap tables.
#
drop table if exists t1;
create table t1 (a int not null,b int not null, primary key (a)) type=heap comment="testing heaps" avg_row_length=100 min_rows=1 max_rows=100;
insert into t1 values(1,1),(2,2),(3,3),(4,4);
delete from t1 where a=1 or a=0;
......@@ -85,3 +86,17 @@ INSERT into t1 set f1=12,f2="ted";
delete from t1 where f2="bill";
select * from t1;
drop table t1;
#
# Test when using part key searches
#
create table t1 (btn char(10) not null, key(btn)) type=heap;
insert into t1 values ("hello"),("hello"),("hello"),("hello"),("hello"),("a"),("b"),("c"),("d"),("e"),("f"),("g"),("h"),("i");
explain select * from t1 where btn like "q%";
select * from t1 where btn like "q%";
alter table t1 add column new_col char(1) not null, add key (btn,new_col), drop key btn;
update t1 set new_col=btn;
explain select * from t1 where btn="a";
explain select * from t1 where btn="a" and new_col="a";
drop table t1;
......@@ -363,7 +363,7 @@ void Field::store_time(TIME *ltime,timestamp_type type)
bool Field::optimize_range()
{
return test(table->file->option_flag() & HA_READ_NEXT);
return test(table->file->option_flag() & HA_ONLY_WHOLE_INDEX);
}
/****************************************************************************
......
......@@ -472,7 +472,7 @@ int main(int argc,char **argv)
int error;
MY_INIT(argv[0]);
start_value=6591595L; best_t1=6947666L; best_t2=6561864L; best_type=2; /* mode=4523 add=5 type: 0 */
start_value=2663113L; best_t1=1175350L; best_t2=7404531L; best_type=4; /* mode=4327 add=3 type: 0 */
if (get_options(argc,(char **) argv))
exit(1);
......
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