Github user kevinxu021 commented on a diff in the pull request:
https://github.com/apache/incubator-trafodion/pull/243#discussion_r48939701
--- Diff: core/conn/jdbc_type2/native/SrvrCommon.cpp ---
@@ -1634,6 +1635,53 @@ short do_ExecSMD(
tableParam[0], inputParam[0], inputParam[1],
inputParam[2], inputParam[3]);
break;
+ case SQL_API_SQLSTATISTICS:
+ if ((!checkIfWildCard(catalogNm, catalogNmNoEsc) ||
!checkIfWildCard(schemaNm, schemaNmNoEsc)
+ || !checkIfWildCard(tableNm, tableNmNoEsc)) &&
!metadataId)
+ {
+ executeException->exception_nr =
odbc_SQLSvc_GetSQLCatalogs_ParamError_exn_;
+ executeException->u.ParamError.ParamDesc =
SQLSVC_EXCEPTION_WILDCARD_NOT_SUPPORTED;
+
FUNCTION_RETURN_NUMERIC(EXECUTE_EXCEPTION,("EXECUTE_EXCEPTION"));
+ }
+
+ if (strcmp(catalogNm,"") == 0)
+ strcpy(tableName1,SEABASE_MD_CATALOG);
+ else
+ strcpy(tableName1, catalogNm);
+ tableParam[0] = tableName1;
+ convertWildcard(metadataId, TRUE, schemaNm, expSchemaNm);
+ convertWildcardNoEsc(metadataId, TRUE, schemaNm,
schemaNmNoEsc);
+ convertWildcard(metadataId, TRUE, tableNm, expTableNm);
+ convertWildcardNoEsc(metadataId, TRUE, tableNm,
tableNmNoEsc);
+ if( inputParam[5] != NULL )
+ {
+ sprintf(cunique, " and index.IS_UNIQUE=1");
+ }
+ inputParam[0] = schemaNmNoEsc;
+ inputParam[1] = expSchemaNm;
+ inputParam[2] = tableNmNoEsc;
+ inputParam[3] = expTableNm;
+ inputParam[4] = NULL;
+ snprintf((char *)sqlString->dataValue._buffer, totalSize,
+ "select "
+ "obj.CATALOG_NAME TABLE_CAT, obj.SCHEMA_NAME TABLE_SCHEM,
obj.OBJECT_NAME TABLE_NAME,"
+ "cast((case when index.IS_UNIQUE=0 then 1 else 0 end) as
smallint) NON_UNIQUE, "
+ "cast(NULL as varchar(32)) INDEX_QUALIFIER,
idxobj.OBJECT_NAME INDEX_NAME, "
+ "cast(-2 as smallint) TYPE, cols.COLUMN_NUMBER
ORDINAL_POSITION, "
+ "substr(cols.COLUMN_NAME,0,CHAR_LENGTH(cols.COLUMN_NAME))
COLUMN_NAME, "
+ "cast((case when keys.ORDERING=0 then 'A' else 'D' end) as
varchar(4)) ASC_OR_DESC,"
+ "cast(-2 as int) CARDINALITY, cast(-2 as int) PAGES,
cast(NULL as varchar(10)) FILTER_CONDITION "
--- End diff --
Says in standard API doc:
CARDINALITY int => When TYPE is tableIndexStatistic, then this is the
number of rows in the table; otherwise, it is the number of unique values in
the index.
PAGES int => When TYPE is tableIndexStatisic then this is the number of
pages used for the table, otherwise it is the number of pages used for the
current index.
TYPE short => index type: ⦠tableIndexStatistic - this identifies table
statistics that are returned in conjuction with a table's index descriptions
⦠tableIndexClustered - this is a clustered index
⦠tableIndexHashed - this is a hashed index
⦠tableIndexOther - this is some other style of index
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