Github user nonstop-qfchen commented on a diff in the pull request:
https://github.com/apache/incubator-trafodion/pull/62#discussion_r37680009
--- Diff: core/sql/sqlcomp/CmpSeabaseDDLtable.cpp ---
@@ -378,6 +378,244 @@ void CmpSeabaseDDL::createSeabaseTableLike(
return;
}
+//
----------------------------------------------------------------------------
+// Method: createSeabaseTableExternalHive
+//
+// This method creates a Trafodion table that represents a Hive table
+//
+// in:
+// cliInterface - references to the cli execution structure
+// createTableNode - representation of the CREATE TABLE statement
+// currCatName - catalog name to use, if not specified
+// currSchName - schema name to use, if not specified
+//
+// returns: 0 - successful, -1 error, -2 error requiring cleanup
+//
+// any error detected is added to the diags area
+//
----------------------------------------------------------------------------
+short CmpSeabaseDDL::createSeabaseTableExternalHive(
+ ExeCliInterface &cliInterface,
+ StmtDDLCreateTable * createTableNode,
+ NAString &currCatName,
+ NAString &currSchName)
+{
+ Lng32 retcode = 0;
+
+ ComObjectName srcTableName(createTableNode->getLikeSourceTableName(),
COM_TABLE_NAME);
+ srcTableName.applyDefaults(currCatName, currSchName);
+
+ // For the target object, use TRAFODION as the default catalog and the
source
+ // table's schema name as the default schema
+ ComObjectName tgtTableName(createTableNode->getTableName(),
COM_TABLE_NAME);
+ ComAnsiNamePart currCatAnsiName(getSystemCatalog());
+ ComAnsiNamePart
currSchAnsiName(srcTableName.getSchemaNamePart().getExternalName());
+ tgtTableName.applyDefaults(currCatName, currSchAnsiName);
+
+ // For now the object and schema name for the target table must match the
+ // object and schema name for the source table
+ if (tgtTableName.getObjectNamePart().getExternalName() !=
+ srcTableName.getObjectNamePart().getExternalName())
--- End diff --
In HIVE (since 0.13), a column name can be quoted with backtick characters
(not the same as double quoted SQL identifiers), see
http://docs.hortonworks.com/HDPDocuments/HDP2/HDP-2.1.5/bk_dataintegration/content/ch_using-hive-quotedidentifiers.html.
Just wonder if we are going to support that.
For the table names, we are going to only allow those with alphanumeric
plus underscore characters, right?
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