Release Notes

FIX BUGS:
[TD-1825]: avoid error for nodejsChecker

ENHANCEMENTS:
[TD-1870]: optimize the memory consumption during interval query.
[TD-225]: optimize the memory consumption for interval query.

NEW FEATURES:
[TD-1954]: a inport/export tool for logical backup
[TD-1877]: custom temporary directory

DOCS:

TEST:
[TD-1702]: add test cases for TSDBDriver

RELEASE NOTES

FIX BUGS:
[td-225] fix bugs found by tsim
[td-255] compact result for all show command.
[TD-1676] fix jenkins valgrind test case
[td-1728] fix memory leaks
[td-1747] reduce tableMeta size
[TD-1750] add python2 connectionerror
[td-1764] fix memory leak.

NEW FEATURES:
[TD-1476] a demo for calcite
[TD-1507] add a nodejs checker for nodejs examples

TEST:
[TD-1497] python connector check
[TD-1584] add some testcases for testing before 1970s
[TD-1636] remove last 2 bytes of file 'wal0'
[TD-1677] add query test case
[TD-1743] add test case for remove db and STable
[TD-1744] PythonChecker
[TD-1745] check C# connector
[td-1752] add test cases.
[TD-1758] add test case

ver-2.0.5.2

RELEASE NOTES

FIX BUGS:
[TD-1533]: fix the parse jdbc url error
[TD-1523]: fix memory leaks and refactor some functions.
[TD-225]: fix compiler error on windows
[TD-1532]: fix taosdemo case bug

NEW FEATURES:
[TD-1572]: A JdbcTaosdemo is supported now.
[TD-1603]: add new error code at client side
[TD-1651]: add lgtm code analyzer support.
[TD-1313]: implement getColumns method in the TSDBDatabaseMet…

TEST:
[TD-1386]: add test case for retention
[TD-1587]: add python restful example
[TD-1469]: add test case for alter table and insert

ELEASE NOTES

FIX BUGS:
[TD-1407]: fix an issue coverity reports getenv() return a strin…
[TD-1423]: fix bugs in group by nchar/binary columns.
[TD-1391]: fix bugs in release obj in submit processing.
[TD-1459]: fix compile error for release build type.
[TD-225]: fix compiler error in win platform
[TD-1245]: fix compile error
[TD-1478]: update sim script.

TEST:
[TD-1389]: Update null value test
[TD-1410]: add a tool for test JDBC Connector
[TD-1329]: add test case for incorrect count query
[TD-1478]: add test case query groupby with interval
[TD-804]: add test case for metadata update

fix:
[TD-1359] add recv timeout for accepted tcp socket

DOC:
[TD- ] Updates for Java Connector markdown files
[TD- ] Changed the description of quotation marks in password change
[TD- ] Fix timestamp precision description.
[TD- ] Improve building steps with specific linux distributions
[TD- ] Improve the readme document with building steps
[TD- ] Modify wallevel description in section 2 of Master/Slave vnode writing process
[TD- ] Update TAOS SQL-ch.md
[TD- ] Update faq-ch.md
[TD- ] Fix some typo and expired content in documents.
[TD- ] Add entrance for Lua connector introduction.

FIX BUGS:
[TD-804] refresh meta data if SQL cannot be parsed
[TD-225] fix last query bug and add some function definitions. Add test cases, Fix compiler error.
[TD-934] fix invalid SQL
[TD-1248 TD-1044 TD-1247] fix crash in tcache.c
[TD-1227] add test case
[TD-1302] Interval query ignores the loading of data block, resulting in crash
[TD-1278] fix bug: If the tag is too long, no error will be reported
[TD-1250] Support the join of nchar
[TD-1099] natual interval in stream and bug fix, natual month/year processing
[TD-621] Looking for the hidden trouble of memory allocation failure in query process
[TD-1173] Invalid account permission setting
[TD-1247] crash while release hash obj
[TD-1230] last_ Row supports time range filtering
[TD-1257] Starting a non master node first may cause the cluster to be out of sync
[TD-1090] compile error in windows
[TD- ] Fixed a problem with crash_gen tool, so that it releases DB connections properly
[TD- ] Update query api for Lua connector.
[TD- ] All connectors should be updated since taos_query has been modified for thread safety. Only query api is updated, callback in stream is not yet.
[TD- ] Fixed a major problem in crash_gen tool, now it properly releases DB connections
[TD- ] daemon works with strict mode now.
[TD- ] add docker repo link
[TD- ] fix var/log/taos permission issue.
[TD- ] add historyfile plug to access .taos_history file.
[TD- ] Update query api for Lua connector.
[TD- ] add more check on data compress and decompress
[TD- ] updates for Java Connector

NEW FEATURES:
[TD-1256] Add description in faq for integrating network connectivity test into Taos program

ENHANCEMENTS:
[TD-1206] Optimizing the query performance of percentile with a new temporary file storage structure
[TD-1204] Improve the performance of restful interface
[TD- ] add natural interval support, now if query with: select count(*) from meters interval(1n);
the actual interval is natural month instead of 30 days. here n is for natural month, and y is for natural year.
[TD- ] last_row function supports time range filtering，and this time filter works as expected.

FIX BUGS:
[TD-1389]: update query null value test
[TD-]: fix timestamp precision description
[TD-1248]: fix crash in tcache.c
[TD-1341]: Fix link and runtime errors in vs2019 compilation environment
[TD-1224]: Repair the possibility of table uid duplication
[TD-1303]: The timestamp display incorrectly when the show connecions statement is executed
[TD-1310]: Fix some defects of mqtt module
[TD-1323]: Allow no port number for the ”first“ configuration item
[TD-1354]: Monitor is no longer executed in the timer thread
[TD-1299]: crash when not using default tag order
[TD-1252]: Alert reports result type is not bool
[TD-1309]: comparation of incompatible types should raise an error
[TD-1039]: query 'select database()' return result like mysql
[TD-1407]: fix an issue coverity reports

NEW FEATURES:
[TD-1230]: last_row function supports time range filtering，and this time filter works as expected.
[TD-934]: Distinguish between invalid error and sql syntax error

ENHANCEMENTS:
[TD-1370]: support function count(1)

TEST:
[TD-1290] add test case for group by
[TD-1320] add test case - insert data with tag specified
[TD-1360]: add test case - read binary data using Java
[TD-1389]: update query null value test

try to release a version

FIX BUGS:
1.Fix some bugs in fill query for super table.
2.Fix the crash while executing "show variables" command.
3.Fix JDBC memory leak whiling invoking the C native library.
4.The default output column name for arithmetic expression is set to the original user input.
5.Add some checks for memory allocation failure.

NEW FEATURES:
1.The constant value column in select clause is supported.
2.The binary tags can be used as the join query condition for super tables.

ENHANCEMENTS:
1.Optimized the last_row query performance.
2.Reducing the memory consumptions during the time interval query.

version 2.0.1.9

1.fix jdbc bug;

fix cluster bug for bawuxinxi

1.fix jdbc memory leak
2.adption for ningsiwq

1.fix jdbc bug;

1.fix sync bug;
2.fix jdbc bug;

fix bug

1.fix bug: no unlock in query

1.fix query bug
2.fix insert bug
3.fix balance bug
4.add link for libtaos.so to /usr/lib64

fixed bugs

1. JDBC driver bug.
2. modify monitor default to enable.