What are the allowed condition types in Magento 2?

Question

What is the list of allowed condition types while adding filter to search criteria in Magento 2?

All of the examples about search criteria in the internet use eq condition type. Is there any other? Do you have a complete list somewhere?

EDIT 1: Please look at the following code block. What are my options for condition_type?

$objectManager = \Magento\Framework\App\ObjectManager::getInstance();

/** @var \Magento\Catalog\Api\ProductRepositoryInterface $productRepository */
$productRepository = $objectManager->get(\Magento\Catalog\Api\ProductRepositoryInterface::class);

/** @var \Magento\Framework\Api\SearchCriteriaBuilder $searchCriteriaBuilder */
$searchCriteriaBuilder = $objectManager->get(\Magento\Framework\Api\SearchCriteriaBuilder::class);

/** @var \Magento\Framework\Api\FilterBuilder $filterBuilder */
$filterBuilder = $objectManager->get(\Magento\Framework\Api\FilterBuilder::class);
$filterSpecialPrice = $filterBuilder->setField('special_price')
    ->setValue('0')
    ->setConditionType('eq')
    ->create();

$searchCriteria = $searchCriteriaBuilder->addFilter($filterSpecialPrice)
    ->create();

$productCollection = $productRepository->getList($searchCriteria);

Answer 1

available conditions

 "eq" => equalValue
 "neq" => notEqualValue
 "like" => likeValue
 "nlike" => notLikeValue
 "is" => isValue
 "in" => inValues
 "nin" => notInValues
 "notnull" => valueIsNotNull
 "null" => valueIsNull
 "moreq" => moreOrEqualValue
 "gt" => greaterValue
 "lt" => lessValue
 "gteq" => greaterOrEqualValue
 "lteq" => lessOrEqualValue
 "finset" => valueInSet
 "from" => fromValue, "to" => toValue

Link to the docs

Answer 2

You can try this one as well from the document

https://devdocs.magento.com/guides/v2.3/rest/performing-searches.html