feat(shell): support create table as and nest query fill for 2.6

fix: When the dataDir is configured in taos.cfg, the env DATA_DIR is wrong.

fix(query): fix issues found by Coverity Scan in qExecutor.c in 2.6

fix:add totalRows to get the result lines after parser

fix(query): mem tskey maybe large than pCheckInfo->lastKey if order desc

fix:add totalRows to get the result lines after parser

* fix: taosbenchmark stmt + csv rework for 2.6

* test: taosbenchmark default_json align with doc

* fix: taosbenchmark sample csv insert rows

* test: fix default_json.py to align with doc

feat:add new interface for schemaless to support '\0' in line value

* feat: update taos-tools f169c0f for 2.6

* feat: update taos-tools a4d9b92 for 2.6

* feat: update taos-tools 7d5c1c0 for 2.6

* fix: 5-taos-tools/taosbenchmark/taosdemoTestInsertWithJson-childTable.py

after, create table without if not exits

* fix: 5-taos-tools/taosbenchmark/taosdemoTestInsertWithJsonStmt.py

after, create table without if not exits

* feat: update taos-tools 2.2.0 (2dba49c) for 2.6

* feat: update test cases

* feat: update taos-tools 404d8da for 2.6

* test: fix location in develop-test/5-taos-tools/taosbenchmark/demo.py

* feat: update taos-tools 3588b3d for 2.6

* feat: update taos-tools 9f4c01e for 2.6

* feat: update taos-tools e7270c9 for 2.6

* feat: update taos-tools 9e75540 for 2.6

* feat: update taos-tools 125c77a for 2.6

* feat: update taos-tools 318246c for 2.6

* feat: update taos-tools 285b5e0 for 2.6

* feat: update taos-tools 8207c74 for 2.6

* feat: update taos-tools cf1df1c for 2.6

* feat: update taos-tools f985260 for 2.6

* feat: update taos-tools f03c09a for 2.6

* feat: update taos-tools f169c0f for 2.6

* feat: update taos-tools a4d9b92 for 2.6

* feat: update taos-tools 7d5c1c0 for 2.6

* fix: 5-taos-tools/taosbenchmark/taosdemoTestInsertWithJson-childTable.py

after, create table without if not exits

* fix: 5-taos-tools/taosbenchmark/taosdemoTestInsertWithJsonStmt.py

after, create table without if not exits

* feat: update taos-tools 2.2.0 (2dba49c) for 2.6

* feat: update test cases

* feat: update taos-tools 404d8da for 2.6

* test: fix location in develop-test/5-taos-tools/taosbenchmark/demo.py

* feat: update taos-tools 3588b3d for 2.6

* feat: update taos-tools 9f4c01e for 2.6

* feat: update taos-tools e7270c9 for 2.6

* feat: update taos-tools 9e75540 for 2.6

* feat: update taos-tools 125c77a for 2.6

* feat: update taos-tools 318246c for 2.6

* feat: update taos-tools 285b5e0 for 2.6

* feat: update taos-tools 8207c74 for 2.6

* feat: update taos-tools cf1df1c for 2.6

enh: guard against possible nullptrs of subquery objs in SSqlObj pSubs additionally

* feat: update taos-tools f169c0f for 2.6

* feat: update taos-tools a4d9b92 for 2.6

* feat: update taos-tools 7d5c1c0 for 2.6

* fix: 5-taos-tools/taosbenchmark/taosdemoTestInsertWithJson-childTable.py

after, create table without if not exits

* fix: 5-taos-tools/taosbenchmark/taosdemoTestInsertWithJsonStmt.py

after, create table without if not exits

* feat: update taos-tools 2.2.0 (2dba49c) for 2.6

* feat: update test cases

* feat: update taos-tools 404d8da for 2.6

* test: fix location in develop-test/5-taos-tools/taosbenchmark/demo.py

* feat: update taos-tools 3588b3d for 2.6

* feat: update taos-tools 9f4c01e for 2.6

* feat: update taos-tools e7270c9 for 2.6

* feat: update taos-tools 9e75540 for 2.6

* feat: update taos-tools 125c77a for 2.6

* feat: update taos-tools 318246c for 2.6

* feat: update taos-tools 285b5e0 for 2.6

* feat: update taos-tools 8207c74 for 2.6

docs: remove case sensitive description of quotes

fix: change the size limit of sql stmt rebuilt for show create table to TSDB_MAX_SQL_LEN

fix: synchronize initialization and destruction of subqueries and their states