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add sampleUtils.java change

TRAFODION-2825 add jdbc user case

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    /core/conn/jdbcT4/src/main/samples/BatchSample/BatchSample.java
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    /core/conn/jdbcT4/src/main/samples/BatchSample/README.md
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    /core/conn/jdbcT4/src/main/samples/TransactionSample/README.md
TRAFODION-2731 removed obsolete comments based on review feedback

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    /core/sql/sqlcomp/DefaultConstants.h
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    /core/sql/sqlcomp/nadefaults.cpp
Merge [TRAFODION-2820] PR 1313 Correct mistakes in JDBC Type 4 Guide

JIRA TRAFODION-2731 CodeCleanup: Phase 6. Cleanup of obsolete/unused cqds.

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    /core/sql/optimizer/OptPhysRelExpr.cpp
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    /core/sql/regress/core/EXPECTED020.SB
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    /core/sql/regress/core/EXPECTEDRTS
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    /core/sql/regress/fullstack2/EXPECTED062
  1. … 11 more files in changeset.
[TRAFODION-2822] Make [first n] views non-updatable; prevent bad MERGE plans

Merge PR 1304 [TRAFODION-2693]misleading error message for 'get schemas' when _MD_ tables in hbase is not avialble

additional fixes to [TRAFODION-2806]

Correct some mistakes (hp)

Merge PR 1314 [TRAFODION-2821] Trafodion core code base needs to be thread safe

[TRAFODION-2821] Trafodion core code base needs to be thread safe

Changes as per review

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    /core/sql/executor/SequenceFileReader.cpp
Merge [TRAFODION-2819] PR 1312 Fix error 4247 on drop with certain CQDs

[TRAFODION-2821] Trafodion core code base needs to be thread safe

The method Ids of the different Java classes are now initialized

in a thread safe manner in JNI layer.

The missing code to initialize the thread specific JNIEnv are added.

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    /core/sql/executor/OrcFileReader.cpp
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    /core/sql/executor/SequenceFileReader.cpp
Correct some mistakes (hp)

[TRAFODION-2819] Fix 4247 error on drop table when certain CQDs are present

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    /core/sql/sqlcomp/CmpSeabaseDDLcommon.cpp
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    /core/sql/sqlcomp/CmpSeabaseDDLtable.cpp
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    /core/sql/sqlcomp/CmpSeabaseDDLview.cpp
[TRAFODION-2818] For Server 2008, function pow() throws STATUS_ILLEGAL_INSTRUCTION

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    /win-odbc64/odbcclient/drvr35/sqltocconv.cpp
Merge [TRAFODION-2815] PR 1309 Improve DATEDIFF desc in SQL Ref Manual

Incorporate Comments 1

Merge [TRAFODION-2807] PR 1300 ODBC Windows 32-bit driver build

Merge [TRAFODION-2812] PR 1303 Fix sqenv.sh not found problem

Merge [TRAFODION-2814] PR 1308 Fix error message 2243

Merge [TRAFODION-2813] PR 1306 Fix index compatibility pruning logic

add limit clause for insert-as-select statement

add limit clause for insert-as-select statement

Add/Update Syntax, Consideration and Example for *DATEDIFF Function* for *Trafodion SQL Reference Manual*

Second rework: Check divisioning columns, also generator core fix

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    /core/sql/regress/compGeneral/EXPECTED071
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    /core/sql/regress/compGeneral/TEST071
[TRAFODION-2814] Fix error message 2243

Merge [TRAFODION-2811] PR 1305 Fix issue with converting NULL to SQL_VARCHAR

Rework; fix comment

[TRAFODION-2813] Ignore leading salt columns when checking index compatibility

[TRAFODION-2811] When convert NULL to SQL_VARCHAR, the length was not be sent