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MariaDB server is a community developed fork of MySQL server. Started by core members of the original MySQL team, MariaDB actively works with outside developers to deliver the most featureful, stable, and sanely licensed open SQL server in the industry.
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The code to get read the value of a system variable was extracting its value on PREPARE stage and was substituting the value (as a constant) into the parse tree. Note that this must be a reversible transformation, i.e. it must be reversed before each re-execution. Unfortunately this cannot be reliably done using the current code, because there are other non-reversible source tree transformations that can interfere with this reversible transformation. Fixed by not resolving the value at PREPARE, but at EXECUTE (as the rest of the functions operate). Added a cache of the value (so that it's constant throughout the execution of the query). Note that the cache also caches NULL values. Updated an obsolete related test suite (variables-big) and the code to test the result type of system variables (as per bug 74). mysql-test/extra/rpl_tests/rpl_insert_id.test: Bug #32124: removed ambiguous testcase mysql-test/r/innodb_data_home_dir_basic.result: Bug #32124: fixed wrong test case mysql-test/r/innodb_flush_method_basic.result: Bug #32124: fixed wrong test case mysql-test/r/ps_11bugs.result: Bug #32124: test case mysql-test/r/ssl_capath_basic.result: Bug #32124: fixed wrong test case mysql-test/r/ssl_cipher_basic.result: Bug #32124: fixed wrong test case mysql-test/r/variables.result: Bug #32124: system vars are shown as such in EXPLAIN EXTENDED, not as constants. mysql-test/suite/rpl/r/rpl_insert_id.result: Bug #32124: removed ambiguous testcase mysql-test/t/ps_11bugs.test: Bug #32124: test case sql/item.cc: Bug #32124: placed the code to convert string to longlong or double to a function (so that it can be reused) sql/item.h: Bug #32124: placed the code to convert string to longlong or double to a function (so that it can be reused) sql/item_func.cc: Bug #32124: moved the evaluation of system variables at runtime (val_xxx). sql/item_func.h: Bug #32124: moved the evaluation of system variables at runtime (val_xxx). sql/set_var.cc: Bug #32124: removed the code that calculated the system variable's value at PREPARE sql/set_var.h: Bug #32124: removed the code that calculated the system variable's value at PREPARE tests/mysql_client_test.c: Bug #32124 : removed the reading of the system variable, because its max length is depended on the system charset and client charset and can't be easily calculated. |
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.bzr-mysql | ||
BitKeeper | ||
BUILD | ||
client | ||
cmd-line-utils | ||
config/ac-macros | ||
dbug | ||
Docs | ||
extra | ||
include | ||
libmysql | ||
libmysql_r | ||
libmysqld | ||
man | ||
mysql-test | ||
mysys | ||
netware | ||
plugin | ||
pstack | ||
regex | ||
scripts | ||
server-tools | ||
sql | ||
sql-bench | ||
sql-common | ||
storage | ||
strings | ||
support-files | ||
tests | ||
unittest | ||
vio | ||
win | ||
zlib | ||
.bzrignore | ||
.cvsignore | ||
CMakeLists.txt | ||
configure.in | ||
COPYING | ||
EXCEPTIONS-CLIENT | ||
INSTALL-SOURCE | ||
INSTALL-WIN-SOURCE | ||
Makefile.am | ||
README |
This is a release of MySQL, a dual-license SQL database server. MySQL is brought to you by the MySQL team at MySQL AB. License information can be found in these files: - For GPL (free) distributions, see the COPYING file and the EXCEPTIONS-CLIENT file. - For commercial distributions, see the LICENSE.mysql file. For further information about MySQL or additional documentation, see: - The latest information about MySQL: http://www.mysql.com - The current MySQL documentation: http://dev.mysql.com/doc Some manual sections of special interest: - If you are migrating from an older version of MySQL, please read the "Upgrading from..." section first! - To see what MySQL can do, take a look at the features section. - For installation instructions, see the Installing and Upgrading chapter. - For the new features/bugfix history, see the Change History appendix. - For the currently known bugs/misfeatures (known errors) see the Problems and Common Errors appendix. - For a list of developers and other contributors, see the Credits appendix. A local copy of the MySQL Reference Manual can be found in the Docs directory in GNU Info format. You can also browse the manual online or download it in any of several formats at the URL given earlier in this file. ************************************************************ IMPORTANT: Bug or error reports should be sent to http://bugs.mysql.com.