Product Prices index process unknown error:
exception 'PDOException' with message 'SQLSTATE[23000]: Integrity constraint violation: 1452 Cannot add or update a child row: a foreign key constraint fails (`pikomik_magento/catalog_product_index_tier_price`, CONSTRAINT `FK_CAT_PRD_IDX_TIER_PRICE_ENTT_ID_CAT_PRD_ENTT_ENTT_ID` FOREIGN KEY (`entity_id`) REFERENCES `catalog_product_entity` (`entity_i)' in /home/pikomik/public_html/lib/Zend/Db/Statement/Pdo.php:228
Stack trace:
#0 /home/pikomik/public_html/lib/Zend/Db/Statement/Pdo.php(228): PDOStatement->execute(Array)
#1 /home/pikomik/public_html/lib/Varien/Db/Statement/Pdo/Mysql.php(110): Zend_Db_Statement_Pdo->_execute(Array)
#2 /home/pikomik/public_html/lib/Zend/Db/Statement.php(300): Varien_Db_Statement_Pdo_Mysql->_execute(Array)
#3 /home/pikomik/public_html/lib/Zend/Db/Adapter/Abstract.php(479): Zend_Db_Statement->execute(Array)
#4 /home/pikomik/public_html/lib/Zend/Db/Adapter/Pdo/Abstract.php(238): Zend_Db_Adapter_Abstract->query('INSERT INTO `ca...', Array)
#5 /home/pikomik/public_html/lib/Varien/Db/Adapter/Pdo/Mysql.php(419): Zend_Db_Adapter_Pdo_Abstract->query('INSERT INTO `ca...', Array)
#6 /home/pikomik/public_html/app/code/core/Mage/Catalog/Model/Resource/Product/Indexer/Price.php(455): Varien_Db_Adapter_Pdo_Mysql->query('INSERT INTO `ca...')
#7 /home/pikomik/public_html/app/code/core/Mage/Catalog/Model/Resource/Product/Indexer/Price.php(379): Mage_Catalog_Model_Resource_Product_Indexer_Price->_prepareTierPriceIndex()
#8 /home/pikomik/public_html/app/code/core/Mage/Index/Model/Indexer/Abstract.php(143): Mage_Catalog_Model_Resource_Product_Indexer_Price->reindexAll()
#9 /home/pikomik/public_html/app/code/core/Mage/Index/Model/Process.php(209): Mage_Index_Model_Indexer_Abstract->reindexAll()
#10 /home/pikomik/public_html/app/code/core/Mage/Index/Model/Process.php(255): Mage_Index_Model_Process->reindexAll()
#11 /home/pikomik/public_html/shell/indexer.php(158): Mage_Index_Model_Process->reindexEverything()
#12 /home/pikomik/public_html/shell/indexer.php(198): Mage_Shell_Compiler->run()
#13 {main}

Next exception 'Zend_Db_Statement_Exception' with message 'SQLSTATE[23000]: Integrity constraint violation: 1452 Cannot add or update a child row: a foreign key constraint fails (`pikomik_magento/catalog_product_index_tier_price`, CONSTRAINT `FK_CAT_PRD_IDX_TIER_PRICE_ENTT_ID_CAT_PRD_ENTT_ENTT_ID` FOREIGN KEY (`entity_id`) REFERENCES `catalog_product_entity` (`entity_i)' in /home/pikomik/public_html/lib/Zend/Db/Statement/Pdo.php:234
Stack trace:
#0 /home/pikomik/public_html/lib/Varien/Db/Statement/Pdo/Mysql.php(110): Zend_Db_Statement_Pdo->_execute(Array)
#1 /home/pikomik/public_html/lib/Zend/Db/Statement.php(300): Varien_Db_Statement_Pdo_Mysql->_execute(Array)
#2 /home/pikomik/public_html/lib/Zend/Db/Adapter/Abstract.php(479): Zend_Db_Statement->execute(Array)
#3 /home/pikomik/public_html/lib/Zend/Db/Adapter/Pdo/Abstract.php(238): Zend_Db_Adapter_Abstract->query('INSERT INTO `ca...', Array)
#4 /home/pikomik/public_html/lib/Varien/Db/Adapter/Pdo/Mysql.php(419): Zend_Db_Adapter_Pdo_Abstract->query('INSERT INTO `ca...', Array)
#5 /home/pikomik/public_html/app/code/core/Mage/Catalog/Model/Resource/Product/Indexer/Price.php(455): Varien_Db_Adapter_Pdo_Mysql->query('INSERT INTO `ca...')
#6 /home/pikomik/public_html/app/code/core/Mage/Catalog/Model/Resource/Product/Indexer/Price.php(379): Mage_Catalog_Model_Resource_Product_Indexer_Price->_prepareTierPriceIndex()
#7 /home/pikomik/public_html/app/code/core/Mage/Index/Model/Indexer/Abstract.php(143): Mage_Catalog_Model_Resource_Product_Indexer_Price->reindexAll()
#8 /home/pikomik/public_html/app/code/core/Mage/Index/Model/Process.php(209): Mage_Index_Model_Indexer_Abstract->reindexAll()
#9 /home/pikomik/public_html/app/code/core/Mage/Index/Model/Process.php(255): Mage_Index_Model_Process->reindexAll()
#10 /home/pikomik/public_html/shell/indexer.php(158): Mage_Index_Model_Process->reindexEverything()
#11 /home/pikomik/public_html/shell/indexer.php(198): Mage_Shell_Compiler->run()
#12 {main}