What SQL statement is element JoinTables equivalent of?

Here is a example of JoinTables, I just can't understand how to join those tables together? I mean if the JoinTables is equivalent of :
select a.value,b.value,c.value
from v_binlog_cache_size a,v_Binlog_cache_disk_use b, v_Binlog_cache_use c
where a.Variable_name='binlog_cache_size' and b.Variable_name='Binlog_cache_disk_use' and c.Variable_name='Binlog_cache_use';
<Metric NAME="BinlogCache" TYPE="TABLE">
<Display>
<Label NLSID="mmd_bc_BinlogCache">BinlogCache</Label>
</Display>
<TableDescriptor>
<ColumnDescriptor NAME="binlog_cache_size" TYPE="NUMBER">
<Display>
<Label NLSID="mmd_bc_binlog_cache_size">binlog_cache_size</Label>
</Display>
</ColumnDescriptor>
<ColumnDescriptor NAME="Binlog_cache_disk_use" TYPE="NUMBER" TRANSIENT="TRUE">
<Display>
<Label NLSID="mmd_bc_Binlog_cache_disk_use">Binlog_cache_disk_use</Label>
</Display>
</ColumnDescriptor>
<ColumnDescriptor NAME="Binlog_cache_use" TYPE="NUMBER" TRANSIENT="TRUE">
<Display>
<Label NLSID="mmd_bc_Binlog_cache_use">Binlog_cache_use</Label>
</Display>
</ColumnDescriptor>
</TableDescriptor>
<ExecutionDescriptor>
<GetTable NAME="MysqlStatusAndVariables"/>
<GetView NAME="v_binlog_cache_size" FROM_TABLE="MysqlStatusAndVariables">
<Filter COLUMN_NAME="Variable_name" OPERATOR="EQ">binlog_cache_size</Filter>
</GetView>
<GetView NAME="v_Binlog_cache_disk_use" FROM_TABLE="MysqlStatusAndVariables">
<Filter COLUMN_NAME="Variable_name" OPERATOR="EQ">Binlog_cache_disk_use</Filter>
</GetView>
<GetView NAME="v_Binlog_cache_use" FROM_TABLE="MysqlStatusAndVariables">
<Filter COLUMN_NAME="Variable_name" OPERATOR="EQ">Binlog_cache_use</Filter>
</GetView>
<JoinTables NAME="v_result" OUTER="TRUE">
<Table NAME="v_binlog_cache_size" />
<Table NAME="v_Binlog_cache_disk_use" />
<Table NAME="v_Binlog_cache_use" />
<Column NAME="binlog_cache_size" COLUMN_NAME="Value" TABLE_NAME="v_binlog_cache_size" />
<Column NAME="Binlog_cache_disk_use" COLUMN_NAME="Value" TABLE_NAME="v_Binlog_cache_disk_use" />
<Column NAME="Binlog_cache_use" COLUMN_NAME="Value" TABLE_NAME="v_Binlog_cache_use" />
</JoinTables>
</ExecutionDescriptor>
</Metric>
If I change the ExecutionDescriptor part to those code as below, is that also has the same result?
<ExecutionDescriptor>
<GetTable NAME="MysqlStatusAndVariables"/>
<GetView NAME="v_binlog_cache_size" FROM_TABLE="MysqlStatusAndVariables">
<Filter COLUMN_NAME="Variable_name" OPERATOR="EQ">binlog_cache_size</Filter>
<Column NAME="binlog_cache_size" COLUMN_NAME="Value" TABLE_NAME="v_binlog_cache_size" />
</GetView>
<GetView NAME="v_Binlog_cache_disk_use" FROM_TABLE="MysqlStatusAndVariables">
<Filter COLUMN_NAME="Variable_name" OPERATOR="EQ">Binlog_cache_disk_use</Filter>
<Column NAME="Binlog_cache_disk_use" COLUMN_NAME="Value" TABLE_NAME="v_Binlog_cache_disk_use" />
</GetView>
<GetView NAME="v_Binlog_cache_use" FROM_TABLE="MysqlStatusAndVariables">
<Filter COLUMN_NAME="Variable_name" OPERATOR="EQ">Binlog_cache_use</Filter>
<Column NAME="Binlog_cache_use" COLUMN_NAME="Value" TABLE_NAME="v_Binlog_cache_use" />
</GetView>
</ExecutionDescriptor>
Thanks,
Satine
Edited by: Satine on Apr 13, 2009 7:43 PM

Here is four metric definitions: "MysqlStatus", "MysqlVariables", "MysqlStatusAndVariables", "BinlogCache".
<Metric NAME="MysqlStatus" TYPE="TABLE" HELP="NO_HELP" USAGE_TYPE="HIDDEN_COLLECT">
<Display>
<Label NLSID="mmd_ms">Mysql Status</Label>
<Description NLSID="mmd_ms_desc">Describes Mysql Status</Description>
</Display>
<TableDescriptor>
<ColumnDescriptor NAME="Variable_name" TYPE="STRING" IS_KEY="TRUE">
<Display>
<Label NLSID="mmd_ms_Variable_name">Variable_name</Label>
<Description NLSID="mmd_ms_Variable_name_desc"> The Variable_name. </Description>
</Display>
</ColumnDescriptor>
<ColumnDescriptor NAME="Value" TYPE="STRING" IS_KEY="FALSE">
<Display>
<Label NLSID="mmd_ms_Value">Value</Label>
<Description NLSID="mmd_ms_Value_desc"> The Value. </Description>
</Display>
</ColumnDescriptor>
</TableDescriptor>
<QueryDescriptor FETCHLET_ID="OSLineToken">
<Property NAME="emdRoot" SCOPE="SYSTEMGLOBAL">emdRoot</Property>
<Property NAME="scriptsDir" SCOPE="SYSTEMGLOBAL">scriptsDir</Property>
<Property NAME="perlBin" SCOPE="SYSTEMGLOBAL">perlBin</Property>
<Property NAME="host" SCOPE="INSTANCE" OPTIONAL="TRUE">host</Property>
<Property NAME="port" SCOPE="INSTANCE" OPTIONAL="TRUE">port</Property>
<Property NAME="uname" SCOPE="INSTANCE" OPTIONAL="TRUE">uname</Property>
<Property NAME="pass" SCOPE="INSTANCE" OPTIONAL="TRUE">pass</Property>
<Property NAME="mysqlhome" SCOPE="INSTANCE">mysqlhome</Property>

<Property NAME="showstatus" SCOPE="INSTANCE">showstatus</Property>
<Property NAME="mydelimiter" SCOPE="INSTANCE">mydelimiter</Property>
<Property NAME="command" SCOPE="GLOBAL">"%perlBin%/perl" "%scriptsDir%/emx/%TYPE%/mysqlmon.pl" "%mysqlhome%" "%showstatus%" "%mydelimiter%" "%host%" "%port%" "%uname%" "%pass%"</Property>
<Property NAME="delimiter" SCOPE="GLOBAL">%mydelimiter%</Property>
<Property NAME="startsWith" SCOPE="GLOBAL">em_result=</Property>
<Property NAME="errStartsWith" SCOPE="GLOBAL">em_error=</Property>

</QueryDescriptor>
</Metric>
<Metric NAME="MysqlVariables" TYPE="TABLE" HELP="NO_HELP" USAGE_TYPE="HIDDEN_COLLECT">
<Display>
<Label NLSID="mmd_mv">Mysql Variables</Label>
<Description NLSID="mmd_mv_desc">Describes Mysql Variables</Description>
</Display>
<TableDescriptor>
<ColumnDescriptor NAME="Variable_name" TYPE="STRING" IS_KEY="TRUE">
<Display>
<Label NLSID="mmd_mv_Variable_name">Variable_name</Label>
<Description NLSID="mmd_mv_Variable_name_desc"> The Variable_name. </Description>
</Display>
</ColumnDescriptor>
<ColumnDescriptor NAME="Value" TYPE="STRING" IS_KEY="FALSE">
<Display>
<Label NLSID="mmd_mv_Value">Value</Label>
<Description NLSID="mmd_mv_Value_desc"> The Value. </Description>
</Display>
</ColumnDescriptor>
</TableDescriptor>
<QueryDescriptor FETCHLET_ID="OSLineToken">
<Property NAME="emdRoot" SCOPE="SYSTEMGLOBAL">emdRoot</Property>
<Property NAME="scriptsDir" SCOPE="SYSTEMGLOBAL">scriptsDir</Property>
<Property NAME="perlBin" SCOPE="SYSTEMGLOBAL">perlBin</Property>
<Property NAME="host" SCOPE="INSTANCE" OPTIONAL="TRUE">host</Property>
<Property NAME="port" SCOPE="INSTANCE" OPTIONAL="TRUE">port</Property>
<Property NAME="uname" SCOPE="INSTANCE" OPTIONAL="TRUE">uname</Property>
<Property NAME="pass" SCOPE="INSTANCE" OPTIONAL="TRUE">pass</Property>
<Property NAME="mysqlhome" SCOPE="INSTANCE">mysqlhome</Property>

<Property NAME="showvariables" SCOPE="INSTANCE">showvariables</Property>
<Property NAME="mydelimiter" SCOPE="INSTANCE">mydelimiter</Property>
<Property NAME="command" SCOPE="GLOBAL">"%perlBin%/perl" "%scriptsDir%/emx/%TYPE%/mysqlmon.pl" "%mysqlhome%" "%showvariables%" "%mydelimiter%" "%host%" "%port%" "%uname%" "%pass%"</Property>
<Property NAME="delimiter" SCOPE="GLOBAL">%mydelimiter%</Property>
<Property NAME="startsWith" SCOPE="GLOBAL">em_result=</Property>
<Property NAME="errStartsWith" SCOPE="GLOBAL">em_error=</Property>

</QueryDescriptor>
</Metric>

<Metric NAME="MysqlStatusAndVariables" TYPE="TABLE" HELP="NO_HELP" USAGE_TYPE="HIDDEN_COLLECT">
<Display>
<Label NLSID="mmd_msv">Mysql Status and Variables</Label>
<Description NLSID="mmd_msv_desc">Describes Mysql Status and Variables</Description>
</Display>
<TableDescriptor>
<ColumnDescriptor NAME="Variable_name" TYPE="STRING" IS_KEY="TRUE">
<Display>
<Label NLSID="mmd_msv_Variable_name">Variable_name</Label>
<Description NLSID="mmd_msv_Variable_name_desc"> The Variable_name. </Description>
</Display>
</ColumnDescriptor>
<ColumnDescriptor NAME="Value" TYPE="STRING" IS_KEY="FALSE">
<Display>
<Label NLSID="mmd_msv_Value">Value</Label>
<Description NLSID="mmd_msv_Value_desc"> The Value. </Description>
</Display>
</ColumnDescriptor>
</TableDescriptor>
<ExecutionDescriptor>
<GetTable NAME="MysqlStatus" USE_CACHE="TRUE"/>
<GetTable NAME="MysqlVariables" USE_CACHE="TRUE"/>
<Union NAME="result">
<Table NAME="MysqlStatus" />
<Table NAME="MysqlVariables" />
</Union>
</ExecutionDescriptor>
</Metric>
<Metric NAME="BinlogCache" TYPE="TABLE">
<Display>
<Label NLSID="mmd_bc_BinlogCache">BinlogCache</Label>
</Display>
<TableDescriptor>
<ColumnDescriptor NAME="binlog_cache_size" TYPE="NUMBER">
<Display>
<Label NLSID="mmd_bc_binlog_cache_size">binlog_cache_size</Label>
</Display>
</ColumnDescriptor>
<ColumnDescriptor NAME="Binlog_cache_disk_use" TYPE="NUMBER" TRANSIENT="TRUE">
<Display>
<Label NLSID="mmd_bc_Binlog_cache_disk_use">Binlog_cache_disk_use</Label>
</Display>
</ColumnDescriptor>
<ColumnDescriptor NAME="Binlog_cache_use" TYPE="NUMBER" TRANSIENT="TRUE">
<Display>
<Label NLSID="mmd_bc_Binlog_cache_use">Binlog_cache_use</Label>
</Display>
</ColumnDescriptor>
<ColumnDescriptor NAME="Binlog_cache_disk_use_d" TYPE="NUMBER"
COMPUTE_EXPR="((Binlog_cache_disk_use >= _Binlog_cache_disk_use) ? 0 : 4294967295) + (Binlog_cache_disk_use - _Binlog_cache_disk_use)">
<Display>
<Label NLSID="mmd_bc_Binlog_cache_disk_use_d">Binlog_cache_disk_use_d</Label>
</Display>
</ColumnDescriptor>
<ColumnDescriptor NAME="Binlog_cache_use_d" TYPE="NUMBER" TRANSIENT="TRUE"
COMPUTE_EXPR="((Binlog_cache_use >= _Binlog_cache_use) ? 0 : 4294967295) + (Binlog_cache_use - _Binlog_cache_use)">
<Display>
<Label NLSID="mmd_bc_Binlog_cache_use_d">Binlog_cache_use_d</Label>
</Display>
</ColumnDescriptor>
<ColumnDescriptor NAME="Binlog_cache_hit_ratio_d" TYPE="NUMBER"
COMPUTE_EXPR="(Binlog_cache_use_d != 0) ? ( (1 - Binlog_cache_disk_use_d / Binlog_cache_use_d) * 100.0 ) : 100">
<Display>
<Label NLSID="mmd_bc_Binlog_cache_hit_radio_d">Binlog_cache_hit_ratio_d(%)</Label>
</Display>
</ColumnDescriptor>
</TableDescriptor>
<ExecutionDescriptor>
<GetTable NAME="MysqlStatusAndVariables"/>
<GetView NAME="v_binlog_cache_size" FROM_TABLE="MysqlStatusAndVariables">
<Filter COLUMN_NAME="Variable_name" OPERATOR="EQ">binlog_cache_size</Filter>
</GetView>
<GetView NAME="v_Binlog_cache_disk_use" FROM_TABLE="MysqlStatusAndVariables">
<Filter COLUMN_NAME="Variable_name" OPERATOR="EQ">Binlog_cache_disk_use</Filter>
</GetView>
<GetView NAME="v_Binlog_cache_use" FROM_TABLE="MysqlStatusAndVariables">
<Filter COLUMN_NAME="Variable_name" OPERATOR="EQ">Binlog_cache_use</Filter>
</GetView>
<JoinTables NAME="v_result" OUTER="TRUE">
<Table NAME="v_binlog_cache_size" />
<Table NAME="v_Binlog_cache_disk_use" />
<Table NAME="v_Binlog_cache_use" />
<Column NAME="binlog_cache_size" COLUMN_NAME="Value" TABLE_NAME="v_binlog_cache_size" />
<Column NAME="Binlog_cache_disk_use" COLUMN_NAME="Value" TABLE_NAME="v_Binlog_cache_disk_use" />
<Column NAME="Binlog_cache_use" COLUMN_NAME="Value" TABLE_NAME="v_Binlog_cache_use" />
</JoinTables>
</ExecutionDescriptor>
</Metric>
Edited by: Satine on Apr 22, 2009 12:16 AM

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me where it is I have gone wrong? The statement is suppose to show records of employees that have Sales Representative as their Title. This is what I came up with:
SELECT * FROM Employees WHERE Title = “Sales Representative”

Try putting brackets around table and field names.
I found wrong kind of double quote also ---
SELECT [Employees].* FROM [Employees] WHERE
[Employees].[Title] = "Sales Representative";
Build a little, test a little

What can be the cause of Web ADI error : Cannot execute SQL statement?

I created a custom integrator in r12.2.3 and while loading I encountered an error, Cannot execute SQL statement.
I checked my setup in Interface attribute , the RUN_ID column has a default type SQL QUERY with a default value SELECT XXCONV_EAM_ASSET_NUM_S.NEXTVAL FROM DUAL.
If I have a right setup here, what can be the cause of this error?

Hi,
The possibilities can be of various reasons, with the sql statements,
xml descriptors, data sources, improper drivers anything. To crack down
the solution, kindly let me know the error messages and what exactly are
you trying to accomplish.
Thanks & Regards
Raj
manimaran t wrote:
what may be the cause of this error java.sql.SQLException: invalid sql
type passed to callable statement in iplanet ussing JNDI
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VPD - what happens if predicate already coded on sql statement?

Does anyone know, when using VPD, what happens if a where clause already exists on an sql statement that a policy predicate would duplicate?
ie the examples are all simple, like adding a "where customer = xx" to a statement like "select * from customer_tab"
what if the user-entered statement is instead "select * from customer_tab where customer = yy", and then the VPD policy appends "where customer = xx" to that? That would result in an error, unless VPD is intelligent enough to handle this condition.
Can anyone tell me what VPD will do in this scenario?

Yes, the VPD is sufficient intelligent to this.
In this in case that the message is returned below:
ORA-28115: policy with check option violation
Cause: Policy predicate was evaluated to FALSE with the updated values.
Action: none

What sql will be for oracle for FOR XML AUTO, XMLSCHEMA, ELEMENTS XSINIL

Hi all,
I have developed an application which supports both database sql server and oracle. I am using sql
select * from test FOR XML AUTO, XMLSCHEMA, ELEMENTS XSINIL, ROOT('test')
to fetch records in xml format from SQL Server.
I want to know what sql will be for oracle to get same result set in xml format.
Thanks in advance.
Edisphere software
Vijay singh

here is one way...
declare
qryctx         DBMS_XMLquery.ctxType;
v_message CLOB;
v_sql          VARCHAR2(400);
begin v_sql := 'SELECT * FROM DUAL';
qryctx := DBMS_XMLquery.newContext(v_sql);
v_message := DBMS_XMLquery.getXML(qryCtx);
DBMS_XMLquery.closeContext(qryCtx);
dbms_output.put_line(v_message);
end;
Sample output is:
===========
<?xml version = '1.0'?>
<ROWSET>
   <ROW num="1">
      <DUMMY>X</DUMMY>
   </ROW>
</ROWSET>Validate it against a schema
xmldoc XMLTYPE;
v_xml_schema varchar2(4000) :='your schema definition';
xmldoc := XMLTYPE(v_xml).createSchemaBasedXML(v_xml_schema);
xmldoc.schemaValidate();Edited by: user130038 on Sep 20, 2011 6:00 AM

What means ".... FROM DUAL" in SQL statements?

Occasionally I find in different SQL statement the appedix "....from dual" e.g.
SELECT blahblah FROM DUAL;
It seems to me that this is a special built-in table.
What does that mean exactely?
Peter

I guess 'FROM' clause is mandatory in Oracle. Hence,
there must always be a table from which we are
selecting values. So, for selecting some arbitary
values which are not coming from any DB Table, we use
this dummy table 'Dual'.
Like
select substr('sometext',5) from dual;
select sysdate from dual ;
etc.
Hope this clarifies.This explanation might be misleading.
The FROM clause is of cause mandatory for a SELECT statement (I think any SQL DB system, not only Oracle). So whenever you need to write a SELECT you might need a dual table.
If you are in PL/SQL you can use most functions without doing a SELECT. Like
a:= substr('sometext',5);
myDate := sysdate;For some things we need to do a select. If we don't have a matching table, then the dual table is handy to return only one row.
example
SELECT mySequence.nextval FROM DUAL;When we are using some tools, like SQL*Plus or T.O.A.D. our typical path to get information returned to the gui is a select. This would be a case were your examples could be used. But you could also do it like this: execute dbms_output.put_line(to_char(sysdate)); After switching the serveroutput on.

What SQL statement is element JoinTables equivalent of?

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