merge from trunk

Makefile.am

@@ -137,46 +137,48 @@ test-force-full:
 test-force-mem:
 	$(MAKE) force=--force mem=--mem test
 
+EXP = --experimental=collections/default.experimental
+
 test-bt:
 	-cd mysql-test ; MTR_BUILD_THREAD=auto \
 	    @PERL@ ./mysql-test-run.pl --comment=normal --force --timer \
-	        --skip-ndbcluster --report-features
+	        --skip-ndbcluster --report-features $(EXP)
 	-cd mysql-test ; MTR_BUILD_THREAD=auto \
 	    @PERL@ ./mysql-test-run.pl  --comment=ps    --force --timer \
-	        --skip-ndbcluster --ps-protocol
+	        --skip-ndbcluster --ps-protocol $(EXP)
 	-if [ -e bin/ndbd -o -e storage/ndb/src/kernel/ndbd ] ; then \
 	  cd mysql-test ; \
 	    MTR_BUILD_THREAD=auto \
 	      @PERL@ ./mysql-test-run.pl --comment=ndb+rpl_ndb+ps --force --timer \
-	          --ps-protocol --mysqld=--binlog-format=row --suite=ndb,rpl_ndb ; \
+	          --ps-protocol --mysqld=--binlog-format=row --suite=ndb,rpl_ndb $(EXP) ; \
 	    MTR_BUILD_THREAD=auto \
 	      @PERL@ ./mysql-test-run.pl --comment=ndb --force --timer \
-	          --with-ndbcluster-only ; \
+	          --with-ndbcluster-only $(EXP) ; \
 	else \
 	  echo "no program found for 'ndbcluster' tests - skipped testing" ; \
 	fi
 	-cd mysql-test ; MTR_BUILD_THREAD=auto \
-	    @PERL@ ./mysql-test-run.pl --force --comment=funcs1+ps --ps-protocol --reorder --suite=funcs_1
+	    @PERL@ ./mysql-test-run.pl --force --comment=funcs1+ps --ps-protocol --reorder --suite=funcs_1 $(EXP)
 	-cd mysql-test ; MTR_BUILD_THREAD=auto \
-	    @PERL@ ./mysql-test-run.pl --force --comment=funcs2 --suite=funcs_2
+	    @PERL@ ./mysql-test-run.pl --force --comment=funcs2 --suite=funcs_2 $(EXP)
 	-cd mysql-test ; MTR_BUILD_THREAD=auto \
-	    @PERL@ ./mysql-test-run.pl --force --comment=partitions --suite=parts
+	    @PERL@ ./mysql-test-run.pl --force --comment=partitions --suite=parts $(EXP)
 	-cd mysql-test ; MTR_BUILD_THREAD=auto \
-	    @PERL@ ./mysql-test-run.pl --force --comment=stress --suite=stress
+	    @PERL@ ./mysql-test-run.pl --force --comment=stress --suite=stress $(EXP)
 	-cd mysql-test ; MTR_BUILD_THREAD=auto \
-	    @PERL@ ./mysql-test-run.pl --force --comment=jp --suite=jp
+	    @PERL@ ./mysql-test-run.pl --force --comment=jp --suite=jp $(EXP)
 	-if [ -d mysql-test/suite/nist ] ; then \
 	  cd mysql-test ; MTR_BUILD_THREAD=auto \
-	      @PERL@ ./mysql-test-run.pl --comment=nist --force --suite=nist ; \
+	      @PERL@ ./mysql-test-run.pl --comment=nist --force --suite=nist $(EXP) ; \
 	fi
 	-if [ -d mysql-test/suite/nist ] ; then \
 	  cd mysql-test ; MTR_BUILD_THREAD=auto \
-	      @PERL@ ./mysql-test-run.pl --comment=nist+ps --force --suite=nist --ps-protocol ; \
+	      @PERL@ ./mysql-test-run.pl --comment=nist+ps --force --suite=nist --ps-protocol $(EXP) ; \
 	fi
 	-if [ -e bin/mysqltest_embedded -o -e libmysqld/examples/mysqltest_embedded ] ; then \
 	  cd mysql-test ; MTR_BUILD_THREAD=auto \
 	      @PERL@ ./mysql-test-run.pl --comment=embedded --force --timer \
-	          --embedded-server --skip-rpl --skip-ndbcluster ; \
+	          --embedded-server --skip-rpl --skip-ndbcluster $(EXP) ; \
 	else \
 	  echo "no program found for 'embedded' tests - skipped testing" ; \
 	fi
@@ -184,22 +186,22 @@ test-bt:
 test-bt-fast:
 	-cd mysql-test ; MTR_BUILD_THREAD=auto \
 	    @PERL@ ./mysql-test-run.pl  --comment=ps    --force --timer \
-	        --skip-ndbcluster --ps-protocol --report-features
+	        --skip-ndbcluster --ps-protocol --report-features $(EXP)
 	-if [ -e bin/ndbd -o -e storage/ndb/src/kernel/ndbd ] ; then \
 	  cd mysql-test ; \
 	    MTR_BUILD_THREAD=auto \
 	      @PERL@ ./mysql-test-run.pl --comment=ndb --force --timer \
-	          --with-ndbcluster-only ; \
+	          --with-ndbcluster-only $(EXP) ; \
 	else \
 	  echo "no program found for 'ndbcluster' tests - skipped testing" ; \
 	fi
 	-cd mysql-test ; MTR_BUILD_THREAD=auto \
-	    @PERL@ ./mysql-test-run.pl --force --comment=stress --suite=stress
+	    @PERL@ ./mysql-test-run.pl --force --comment=stress --suite=stress $(EXP)
 
 test-bt-debug:
 	-cd mysql-test ; MTR_BUILD_THREAD=auto \
 	    @PERL@ ./mysql-test-run.pl --comment=debug  --force --timer \
-	        --skip-ndbcluster --skip-rpl --report-features
+	        --skip-ndbcluster --skip-rpl --report-features $(EXP)
 
 test-bt-debug-fast:
 

configure.in

@@ -10,7 +10,7 @@ AC_CANONICAL_SYSTEM
 #
 # When changing major version number please also check switch statement
 # in client/mysqlbinlog.cc:check_master_version().
-AM_INIT_AUTOMAKE(mysql, 5.4.5-beta)
+AM_INIT_AUTOMAKE(mysql, 5.5.0-beta)
 AM_CONFIG_HEADER([include/config.h:config.h.in])
 
 PROTOCOL_VERSION=10

mysql-test/collections/default.experimental

@@ -2,18 +2,79 @@
 # in alphabetical order. This also helps with merge conflict resolution.
 
 binlog.binlog_tmp_table*                 # Bug#45578:2009-07-10 alik Test binlog_tmp_table fails ramdonly on PB2: Unknown table 't2'
+
 funcs_1.charset_collation_1              # depends on compile-time decisions
+
 innodb.innodb_information_schema         # Bug#47449 2009-09-19 alik main.information_schema and innodb.innodb_information_schema fail sporadically
+
 main.ctype_gbk_binlog  @solaris          # Bug#46010: main.ctype_gbk_binlog fails sporadically : Table 't2' already exists
 main.information_schema                  # Bug#47449 2009-09-19 alik main.information_schema and innodb.innodb_information_schema fail sporadically
+main.innodb-autoinc                      # Bug#44030 2009-09-24 alik Marking innodb-autoinc experimental while waiting for the patch to be merged
 main.lock_multi_bug38499                 # Bug#47448 2009-09-19 alik main.lock_multi_bug38499 times out sporadically
-main.plugin*  @solaris                   # Bug#47146 Linking problem with example plugin when dtrace enabled
-main.plugin_load  @solaris               # Bug#47146
+main.lock_multi_bug38691 @solaris        # Bug#47792 2009-10-02 alik main.lock_multi_bug38691 times out sporadically on Solaris 10
+main.log_tables                          # Bug#47924 2009-10-08 alik main.log_tables times out sporadically 
+main.plugin                              # Bug#47146 Linking problem with example plugin when dtrace enabled
+main.plugin_load                         # Bug#47146
+
 rpl.rpl_get_master_version_and_clock*    # Bug#46931 2009-08-26 alik rpl.rpl_get_master_version_and_clock fails on hpux11.31
 rpl.rpl_innodb_bug28430* @solaris        # Bug#46029
+rpl.rpl_innodb_bug30888* @solaris        # Bug#47646 2009-09-25 alik rpl.rpl_innodb_bug30888 fails sporadically on Solaris
 rpl.rpl_plugin_load*  @solaris           # Bug#47146
 rpl.rpl_row_create_table*                # Bug#45576: rpl_row_create_table fails on PB2
-rpl_ndb.rpl_ndb_log                      # Bug#38998
+rpl.rpl_log_pos*                         # Bug#47743 2009-10-02 alik rpl.rpl_log_pos fails sporadically
+rpl.rpl_trigger*                         # Bug#46656 2009-09-25 alik InnoDB plugin: memory leaks (Valgrind)
+
+# Declare all NDB-tests in ndb and rpl_ndb test suites experimental.
+# Usually the test cases from ndb and rpl_ndb test suites are not run in PB,
+# but they run by gcov.
+#
+
+ndb.*
+rpl_ndb.*
+
+# Declare all NDB-tests in other test suites experimental.
+
+stress.ddl_ndb
+
+sys_vars.ndb_log_update_as_write_basic
+sys_vars.have_ndbcluster_basic
+sys_vars.ndb_log_updated_only_basic
+
+funcs_1.ndb_storedproc_10
+funcs_1.ndb_bitdata
+funcs_1.ndb_trig_03
+funcs_1.ndb_trig_0102
+funcs_1.is_tables_ndb
+funcs_1.is_columns_ndb
+funcs_1.ndb_trig_0407
+funcs_1.ndb_trig_1011ext
+funcs_1.ndb_storedproc_06
+funcs_1.ndb_views
+funcs_1.is_cml_ndb
+funcs_1.ndb_storedproc_02
+funcs_1.ndb_storedproc_03
+funcs_1.ndb_trig_03e
+funcs_1.is_engines_ndb
+funcs_1.ndb_trig_08
+funcs_1.ndb_storedproc_07
+funcs_1.ndb_storedproc_08
+funcs_1.ndb_func_view
+funcs_1.ndb_trig_09
+funcs_1.ndb_cursors
+
+funcs_2.ndb_charset
 
-ndb.n*                                   # Consider all NDB tests experimental.
-rpl_ndb.r*                               # Consider all NDB tests experimental.
+parts.partition_engine_ndb
+parts.ndb_dd_backuprestore
+parts.partition_value_ndb
+parts.partition_mgm_lc2_ndb
+parts.partition_alter1_2_ndb
+parts.partition_alter1_1_ndb
+parts.part_supported_sql_func_ndb
+parts.partition_int_ndb
+parts.partition_mgm_lc1_ndb
+parts.partition_auto_increment_ndb
+parts.partition_syntax_ndb
+parts.partition_alter1_1_2_ndb
+parts.partition_basic_ndb
+parts.partition_mgm_lc0_ndb

mysql-test/collections/mysql-trunk.push

+perl mysql-test-run.pl --timer --force --parallel=auto --experimental=collections/default.experimental --comment=n_mix --mysqld=--binlog-format=mixed --suite=main,binlog,innodb,federated,rpl
+perl mysql-test-run.pl --timer --force --parallel=auto --experimental=collections/default.experimental --comment=ps_row --ps-protocol --mysqld=--binlog-format=row --suite=main,binlog,innodb,federated,rpl
+perl mysql-test-run.pl --timer --force --parallel=auto --experimental=collections/default.experimental --comment=embedded --embedded --suite=main,binlog,innodb,federated,rpl
+perl mysql-test-run.pl --timer --force --parallel=auto --experimental=collections/default.experimental --comment=rpl_binlog_row --mysqld=--binlog-format=row --suite=rpl,binlog
+perl mysql-test-run.pl --timer --force --parallel=auto --experimental=collections/default.experimental --comment=funcs_1 --suite=funcs_1

mysql-test/suite/funcs_1/t/disabled.def

@@ -10,4 +10,4 @@
 #
 ##############################################################################
 
-ndb_trig_1011ext:  Bug#32656 NDB: Duplicate key error aborts transaction in handler. Doesn't talk back to SQL
+ndb_trig_1011ext:  Bug#47564

mysql-test/suite/innodb/t/disabled.def

-innodb-index: InnoDB: Error: table `test`.`t1#1` already exists in InnoDB internal
+innodb-index  : Bug#47563 2009-06-11 svoj InnoDB: Error: table `test`.`t1#1` already exists in InnoDB internal

mysql-test/suite/parts/t/disabled.def

-partition_basic_ndb            : Bug#19899 Crashing the server
+partition_basic_ndb            : Bug#44919 parts-suite in mtr tries to use features not supported by ndb
 # http://dev.mysql.com/doc/refman/5.1/en/mysql-cluster-limitations-syntax.html
 partition_syntax_ndb           : Bug#36735 Not supported

mysql-test/suite/rpl/t/disabled.def

@@ -10,4 +10,4 @@
 #
 ##############################################################################
 
-rpl_cross_version      : Bug#42311 2009-03-27 joro rpl_cross_version fails on macosx
+rpl_cross_version      : Bug#43913 2009-03-27 joro rpl_cross_version can't pass on conflicts complainig clash with --slave-load-tm

mysql-test/t/index_merge_innodb.test

@@ -21,14 +21,10 @@ let $index_merge_random_rows_in_EXPLAIN = 1;
 # InnoDB does not support Merge tables (affects include/index_merge1.inc)
 let $merge_table_support= 0;
 
-# The first two tests are disabled because of non deterministic explain output.
-# If include/index_merge1.inc can be enabled for InnoDB and all other
-# storage engines, please remove the subtest for Bug#21277 from
-# include/index_merge2.inc.
-# This test exists already in include/index_merge1.inc.
+# -- [DISABLED Bug#45727]
 # --source include/index_merge1.inc
 # --source include/index_merge_ror.inc
+# --source include/index_merge2.inc
 
---source include/index_merge2.inc
 --source include/index_merge_2sweeps.inc
 --source include/index_merge_ror_cpk.inc

scripts/make_binary_distribution.sh

@@ -64,6 +64,7 @@ cflags="@CFLAGS@"
 
 STRIP=1				# Option ignored
 SILENT=0
+MALLOC_LIB=
 PLATFORM=""
 TMP=/tmp
 NEW_NAME=""			# Final top directory and TAR package name
@@ -76,6 +77,7 @@ for arg do
     --tmp=*)    TMP=`echo "$arg" | sed -e "s;--tmp=;;"` ;;
     --suffix=*) SUFFIX=`echo "$arg" | sed -e "s;--suffix=;;"` ;;
     --short-product-tag=*) SHORT_PRODUCT_TAG=`echo "$arg" | sed -e "s;--short-product-tag=;;"` ;;
+    --inject-malloc-lib=*) MALLOC_LIB=`echo "$arg" | sed -e 's;^[^=]*=;;'` ;;
     --no-strip) STRIP=0 ;;
     --machine=*) machine=`echo "$arg" | sed -e "s;--machine=;;"` ;;
     --platform=*) PLATFORM=`echo "$arg" | sed -e "s;--platform=;;"` ;;
@@ -293,6 +295,12 @@ if [ x"$BASE_SYSTEM" != x"netware" ] ; then
     fi
   fi
 
+  # If requested, add a malloc library .so into pkglibdir for use
+  # by mysqld_safe
+  if [ -n "$MALLOC_LIB" ]; then
+    cp "$MALLOC_LIB" "$DEST/lib/"
+  fi
+
   # FIXME let this script be in "bin/", where it is in the RPMs?
   # http://dev.mysql.com/doc/refman/5.1/en/mysql-install-db-problems.html
   mkdir $DEST/scripts

scripts/mysql_config.sh

@@ -167,6 +167,10 @@ Options:
         --port           [$port]
         --version        [$version]
         --libmysqld-libs [$embedded_libs]
+        --variable=VAR   VAR is one of:
+                pkgincludedir [$pkgincludedir]
+                pkglibdir     [$pkglibdir]
+                plugindir     [$plugindir]
 EOF
         exit 1
 }
@@ -184,6 +188,15 @@ while test $# -gt 0; do
         --port)    echo "$port" ;;
         --version) echo "$version" ;;
         --embedded-libs | --embedded | --libmysqld-libs) echo "$embedded_libs" ;;
+        --variable=*)
+          var=`echo "$1" | sed 's,^[^=]*=,,'`
+          case "$var" in
+            pkgincludedir) echo "$pkgincludedir" ;;
+            pkglibdir) echo "$pkglibdir" ;;
+            plugindir) echo "$plugindir" ;;
+            *) usage ;;
+          esac
+          ;;
         *)         usage ;;
         esac
 

scripts/mysqld_safe.sh

@@ -11,9 +11,13 @@
 # mysql.server works by first doing a cd to the base directory and from there
 # executing mysqld_safe
 
+# Initialize script globals
 KILL_MYSQLD=1;
 MYSQLD=
 niceness=0
+mysqld_ld_preload=
+mysqld_ld_library_path=
+
 # Initial logging status: error log is not open, and not using syslog
 logging=init
 want_syslog=0
@@ -46,6 +50,7 @@ Usage: $0 [OPTIONS]
   --open-files-limit=LIMIT   Limit the number of open files
   --core-file-size=LIMIT     Limit core files to the specified size
   --timezone=TZ              Set the system timezone
+  --malloc-lib=LIB           Preload shared library LIB if available
   --mysqld=FILE              Use the specified file as mysqld
   --mysqld-version=VERSION   Use "mysqld-VERSION" as mysqld
   --nice=NICE                Set the scheduling priority of mysqld
@@ -172,6 +177,7 @@ parse_arguments() {
       # mysqld_safe-specific options - must be set in my.cnf ([mysqld_safe])!
       --core-file-size=*) core_file_size="$val" ;;
       --ledir=*) ledir="$val" ;;
+      --malloc-lib=*) set_malloc_lib "$val" ;;
       --mysqld=*) MYSQLD="$val" ;;
       --mysqld-version=*)
         if test -n "$val"
@@ -202,6 +208,131 @@ parse_arguments() {
 }
 
 
+# Add a single shared library to the list of libraries which will be added to
+# LD_PRELOAD for mysqld
+#
+# Since LD_PRELOAD is a space-separated value (for historical reasons), if a
+# shared lib's path contains spaces, that path will be prepended to
+# LD_LIBRARY_PATH and stripped from the lib value.
+add_mysqld_ld_preload() {
+  lib_to_add="$1"
+  log_notice "Adding '$lib_to_add' to LD_PRELOAD for mysqld"
+
+  case "$lib_to_add" in
+    *' '*)
+      # Must strip path from lib, and add it to LD_LIBRARY_PATH
+      lib_file=`basename "$lib_to_add"`
+      case "$lib_file" in
+        *' '*)
+          # The lib file itself has a space in its name, and can't
+          # be used in LD_PRELOAD
+          log_error "library name '$lib_to_add' contains spaces and can not be used with LD_PRELOAD"
+          exit 1
+          ;;
+      esac
+      lib_path=`dirname "$lib_to_add"`
+      lib_to_add="$lib_file"
+      [ -n "$mysqld_ld_library_path" ] && mysqld_ld_library_path="$mysqld_ld_library_path:"
+      mysqld_ld_library_path="$mysqld_ld_library_path$lib_path"
+      ;;
+  esac
+
+  # LD_PRELOAD is a space-separated
+  [ -n "$mysqld_ld_preload" ] && mysqld_ld_preload="$mysqld_ld_preload "
+  mysqld_ld_preload="${mysqld_ld_preload}$lib_to_add"
+}
+
+
+# Returns LD_PRELOAD (and LD_LIBRARY_PATH, if needed) text, quoted to be
+# suitable for use in the eval that calls mysqld.
+#
+# All values in mysqld_ld_preload are prepended to LD_PRELOAD.
+mysqld_ld_preload_text() {
+  text=
+
+  if [ -n "$mysqld_ld_preload" ]; then
+    new_text="$mysqld_ld_preload"
+    [ -n "$LD_PRELOAD" ] && new_text="$new_text $LD_PRELOAD"
+    text="${text}LD_PRELOAD="`shell_quote_string "$new_text"`' '
+  fi
+
+  if [ -n "$mysqld_ld_library_path" ]; then
+    new_text="$mysqld_ld_library_path"
+    [ -n "$LD_LIBRARY_PATH" ] && new_text="$new_text:$LD_LIBRARY_PATH"
+    text="${text}LD_LIBRARY_PATH="`shell_quote_string "$new_text"`' '
+  fi
+
+  echo "$text"
+}
+
+
+mysql_config=
+get_mysql_config() {
+  if [ -z "$mysql_config" ]; then
+    mysql_config=`echo "$0" | sed 's,/[^/][^/]*$,/mysql_config,'`
+    if [ ! -x "$mysql_config" ]; then
+      log_error "Can not run mysql_config $@ from '$mysql_config'"
+      exit 1
+    fi
+  fi
+
+  "$mysql_config" "$@"
+}
+
+
+# set_malloc_lib LIB
+# - If LIB is empty, do nothing and return
+# - If LIB is 'tcmalloc', look for tcmalloc shared library in /usr/lib
+#   then pkglibdir.  tcmalloc is part of the Google perftools project.
+# - If LIB is an absolute path, assume it is a malloc shared library
+#
+# Put LIB in mysqld_ld_preload, which will be added to LD_PRELOAD when
+# running mysqld.  See ld.so for details.
+set_malloc_lib() {
+  malloc_lib="$1"
+
+  if [ "$malloc_lib" = tcmalloc ]; then
+    pkglibdir=`get_mysql_config --variable=pkglibdir`
+    malloc_lib=
+    # This list is kept intentionally simple.  Simply set --malloc-lib
+    # to a full path if another location is desired.
+    for libdir in /usr/lib "$pkglibdir"; do
+      for flavor in _minimal '' _and_profiler _debug; do
+        tmp="$libdir/libtcmalloc$flavor.so"
+        #log_notice "DEBUG: Checking for malloc lib '$tmp'"
+        [ -r "$tmp" ] || continue
+        malloc_lib="$tmp"
+        break 2
+      done
+    done
+
+    if [ -z "$malloc_lib" ]; then
+      log_error "no shared library for --malloc-lib=tcmalloc found in /usr/lib or $pkglibdir"
+      exit 1
+    fi
+  fi
+
+  # Allow --malloc-lib='' to override other settings
+  [ -z  "$malloc_lib" ] && return
+
+  case "$malloc_lib" in
+    /*)
+      if [ ! -r "$malloc_lib" ]; then
+        log_error "--malloc-lib '$malloc_lib' can not be read and will not be used"
+        exit 1
+      fi
+      ;;
+    *)
+      log_error "--malloc-lib must be an absolute path or 'tcmalloc'; " \
+        "ignoring value '$malloc_lib'"
+      exit 1
+      ;;
+  esac
+
+  add_mysqld_ld_preload "$malloc_lib"
+}
+
+
 #
 # First, try to find BASEDIR and ledir (where mysqld is)
 #
@@ -549,7 +680,7 @@ fi
 #  ulimit -n 256 > /dev/null 2>&1		# Fix for BSD and FreeBSD systems
 #fi
 
-cmd="$NOHUP_NICENESS"
+cmd="`mysqld_ld_preload_text`$NOHUP_NICENESS"
 
 for i in  "$ledir/$MYSQLD" "$defaults" "--basedir=$MY_BASEDIR_VERSION" \
   "--datadir=$DATADIR" "$USER_OPTION"

support-files/mysql.spec.sh

@@ -448,6 +448,13 @@ $MBD/libtool --mode=execute install -m 755 \
                  $RPM_BUILD_DIR/mysql-%{mysql_version}/mysql-debug-%{mysql_version}/sql/mysqld \
                  $RBR%{_sbindir}/mysqld-debug
 
+%if %{?malloc_lib_target:1}%{!?malloc_lib_target:0}
+# Even though this is a shared library, put it under /usr/lib/mysql, so it
+# doesn't conflict with possible shared lib by the same name in /usr/lib.  See
+# `mysql_config --variable=pkglibdir` and mysqld_safe for how this is used.
+install -m 644 "%{malloc_lib_source}" "$RBR%{_libdir}/mysql/%{malloc_lib_target}"
+%endif
+
 # install saved perror binary with NDB support (BUG#13740)
 install -m 755 $MBD/extra/perror $RBR%{_bindir}/perror
 
@@ -707,6 +714,10 @@ fi
 %attr(755, root, root) %{_libdir}/mysql/plugin/ha_innodb_plugin.so*
 %endif
 
+%if %{?malloc_lib_target:1}%{!?malloc_lib_target:0}
+%attr(755, root, root) %{_libdir}/mysql/%{malloc_lib_target}
+%endif
+
 %attr(755, root, root) %{_sbindir}/mysqld
 %attr(755, root, root) %{_sbindir}/mysqld-debug
 %attr(755, root, root) %{_sbindir}/rcmysql