windowshostingleader.com – MySQL is merely probably the most effective way of storing data. It is versatile, comprehensive, and avoids storing data in 1 massive area. MySQL is utilised with a number of scripting languages, essentially the most common of which getting PHP.
MySQL, is created, distributed, and supported by Oracle Corporation. MySQL Server has a practical set of features developed in close cooperation with our users. It is really likely that your favored application or language supports the MySQL Database Server. Performance and scalability is actually a priority for MySQL, understanding from community feedback and taking into account trends and developments in personal computer hardware and its architecture.
Changes in MySQL 5.7.19
Account Management Notes
- During data directory initialization or upgrade, MySQL now creates a
'mysql.session'@'localhost'reserved account. This account is used internally by plugins to access the server. It is locked so that it cannot be used for client connections. (Bug #25642343)
- Solaris: On Solaris, MySQL binary distributions are now linked against
libatomic.so, so they are no longer dependent on
libstatomic.so. (Bug #25909965)
Deprecation and Removal Notes
- InnoDB: The
innodb_undo_logsconfiguration option is deprecated and will be removed in a future release. The
innodb_rollback_segmentsconfiguration option performs the same function and should be used instead.The
Innodb_available_undo_logsstatus variable is deprecated and will be removed in a future release.
- mysqladmin was added to Docker/Minimal packages because it is needed by InnoDB Cluster. (Bug #25998285)
- Debian/Ubuntu packages now support multiple MySQL instances with systemd. See Managing MySQL Server with systemd. (Bug #24559588, Bug #82785)
- Security Fix: The linked OpenSSL library for the MySQL Commercial Server has been updated to version 1.0.2l. Issues fixed in the new OpenSSL version are described at http://www.openssl.org/news/vulnerabilities.html.This change does not affect the Oracle-produced MySQL Community build of MySQL Server, which uses the yaSSL library instead. (Bug #26160962)
- MySQL Enterprise Edition now supports LDAP pluggable authentication of MySQL users. This enables MySQL Server to use LDAP (Lightweight Directory Access Protocol) to authenticate MySQL users by accessing directory services such as X.500. For more information, see Pluggable Authentication.
- MySQL Enterprise Edition now includes a
keyring_awsplugin that communicates with the Amazon Web Services Key Management Service as a back end for key generation and uses a local file for key storage. For more information, see The MySQL Keyring.
Spatial Data Support
- These functions previously accepted either WKB strings or geometry arguments. Use of geometry arguments is now deprecated and generates a warning. Geometry arguments will not be accepted in MySQL 8.0.
For information about migrating queries that refer to those functions away from using geometry arguments to using WKB arguments, see Functions That Create Geometry Values from WKB Values.
Test Suite Notes
- mysql-test-run.pl now has a
--test-progressoption to cause display of the percentage of tests remaining. (Bug #25601131, Bug #20755059, Bug #76455)
- These changes were made to the
--xml-reportoption for mysql-test-run.pl:
<failure>tag identifies any test failing on a retry attempt.
- Separate statistics and fields are included for skipped and disabled tests.
- The XML report is created in the build directory if no absolute path is given for out-of-source builds.
- For combination runs, a field named
variationis included in the
- Results for all tests belonging to a suite are aggregated within a single
- Information regarding failures is reported with a brief reason in an attribute named
message, along with other details within the tag.
- mysql-test-run.pl now supports a
--report-unstable-testsoption that has these effects:
- Reports any test that has passed using at least one retry attempt in a separate category called “Unstable tests” in the summary.
- If all failures are due to unstable tests, mysql-test-run.pl produces a warning but exits successfully.
- Adds a new XML tag to report unstable tests, if the
--xml-reportoption is also specified.
(Bug #24473420, Bug #25984429)
- mysqltest now supports a
replace_numeric_roundcommand that takes an argument value from 0 to 16 indicating the number of decimals to round numeric values to. This can be used to help prevent result content mismatch errors for tests in which slightly different results are obtained across platforms due to precision differences. Thanks to Daniel Black for the patch. (Bug #23280117, Bug #81399)
X Plugin Notes
- X Plugin now handles expired SSL certificates correctly. (Bug #25835833)
- The output of clauses such as
HAVINGhas been improved by moving the
grouping_criteriaexpression to the derived query. (Bug #25549637, Bug #24497007)
- Linux: The generic Linux build for MySQL 5.7 is now built on Oracle Linux 6 using
glibc2.12. Systems that use the build need to have
glibc2.12 or later installed on them. (Bug #26005558)
- Linux: The generic Linux build for MySQL 5.7 now supports Non-Uniform Memory Access (NUMA) on its host system. Systems that use the build need to have
libnumainstalled on them. See Installing MySQL on Unix/Linux Using Generic Binaries for more details. (Bug #26005558)
Functionality Added or Changed
- Replication: The
group_replication_transaction_size_limitvariable was added to enable you to protect a group against large transactions causing a failure. (Bug #84785, Bug #25510757)
- Replication: Group Replication now supports SQL transaction
.specfiles now include support for running unit tests. (Bug #25814143, Bug #85743)
- For Windows, MSI installer packages now include a check for the required Visual Studio redistributable package, and produce a message asking the user to install it if it is missing. (Bug #25658832)
- The mysql client now supports a
--binary-as-hexoption that causes display of binary data using hexadecimal notation (
0x). Thanks to Daniël van Eeden for the patch. (Bug #25340722, Bug #84391)
audit_logfilter parser now produces errors for unexpected JSON elements in filter definitions. (Bug #24360663)
libmysqldembedded server library is deprecated and will be removed in MySQL 8.0. These are also deprecated and will be removed:
- The mysql_config
- The CMake
- The (undocumented) mysql
- The mysqltest
The mysqltest_embedded and mysql_client_test_embedded test programs
- The mysql_config
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