sql - Double/Random alias name in select clause on Oracle 11g does not throw invalid identifier exception -


yesterday stumbled upon strange behavior on customers oracle 10g instance. procedure wrote gave me invalid identifier exception running fine on oracle 11g instances.

the relevant query following:

select b.b.v_col_b  tbla left join tblb b on a.pk_col_a = b.fk_a;

pleas note b.b.v_col_b part of query. changing left join inner join did raise ora-00904: "b"."b"."v_col_b": invalid identifier exception, but:

  1. isn't syntax error?
  2. can explain behaviour?

a working demo can found on sqlfiddle

edit: added table definition:

create table tbla (   pk_col_a int primary key,    v_col_a varchar2(50));  create table tblb (   pk_col_b int primary key,    fk_a int,    v_col_b varchar2(50));

edit2: @lalitkumarb's mentioned seems happen on oracle 11g

congratulations, have found bug :)

in particular case can write whatever want when selecting of tblb columns:

select helloworld.b.v_col_b, mghjfghj.b.fk_a, asdasdas.b.pk_col_b tbla left join tblb b on a.pk_col_a = b.fk_a;

you can right join:

select helloworld.b.v_col_b, mghjfghj.b.fk_a, asdasdas.b.pk_col_b tblb b right join tbla on a.pk_col_a = b.fk_a;

it won't work oracle join syntax ( (+) notation ) though.

it not expected behaviour and, lalit noted in comments, fixed in 12c. can file bug request wit oracle support if want. maybe there patch it.


Comments

Post a Comment

Popular posts from this blog

Magento/PHP - Get phones on all members in a customer group -

i working on custom magento extension. working around adminhtml part , i've created custom form there. here form code: <?php class vivasindustries_smsnotification_block_adminhtml_sms_sendmass_edit_form extends mage_adminhtml_block_widget_form { public function _preparelayout() { $extensionpath = mage::getmoduledir('js', 'vivasindustries_smsnotification'); $head = $this->getlayout()->getblock('head'); $head->addjs('jquery.js'); $head->addjs('vivas.js'); return parent::_preparelayout(); } protected function _prepareform() { $form = new varien_data_form(array( 'id' => 'edit_form', 'action' => $this->geturl('*/*/save', array('id' => $this->getrequest()->get...
Read more

php - Bypass Geo Redirect for specific directories -

i'm trying bypass redirect specific url within site. wondering if might able help. the code below code use, original urls replaces example.com i'd able access http://example.com/admin without redirect occuring. is there way this, , there way using own ip? function country_geo_redirect() { $country = getenv('http_geoip_country_code'); if ($country == "us" ) { wp_redirect("http://usa.example.com/"); exit; } else if ($country == "gb" ) { wp_redirect("http://uk.example.com/"); exit; } } add_action('init', 'country_geo_redirect'); you can bypass redirection code if server found ip address. if ip address == <my ip address> ' nothing here else country_georedirect() end if
Read more

php - .htaccess mod_rewrite for dynamic url which has domain names -

i want convert url ex:( example.com/link.php?url=facebook.com ) ( example.com/facebook.com.php ) how can using .htaccess. or there other process make job easier ? i tried adding script .htaccess file options +followsymlinks rewriteengine on rewriterule url-(.*)\.htm$ link.php?url=$1 but converting url adding "url-" ( example.com/url-facebook.com.php ) i want remove "url-" , want make ( example.com/facebook.com.php ) rewriteengine on rewritecond %{the_request} ^get.*link\.php\?url\= [nc] rewritecond %{request_uri} !/system/.* [nc] rewriterule (.*?)link\.php\?url\=/*(.*) /$1$2 [r=301,ne,l] not sure how above work edit of used use remove index.php url
Read more