{"id":6394,"date":"2024-03-14T04:11:49","date_gmt":"2024-03-14T04:11:49","guid":{"rendered":"https:\/\/www.silicloud.com\/blog\/how-to-query-for-null-values-and-empty-values-in-a-hive-table\/"},"modified":"2025-08-02T03:03:59","modified_gmt":"2025-08-02T03:03:59","slug":"how-to-query-for-null-values-and-empty-values-in-a-hive-table","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/blog\/how-to-query-for-null-values-and-empty-values-in-a-hive-table\/","title":{"rendered":"Hive Null &#038; Empty Values Query Guide"},"content":{"rendered":"<p>In Hive, empty values and null values are two different concepts. Empty values usually refer to empty strings or empty collections, while null values indicate missing or unknown values.<\/p>\n<p>To search for null values in Hive, you can use the following statement:<\/p>\n<pre class=\"post-pre\"><code><span class=\"hljs-keyword\">SELECT<\/span> <span class=\"hljs-operator\">*<\/span> <span class=\"hljs-keyword\">FROM<\/span> table_name <span class=\"hljs-keyword\">WHERE<\/span> column_name <span class=\"hljs-operator\">=<\/span> <span class=\"hljs-string\">''<\/span>;\r\n<\/code><\/pre>\n<p>To search for null values in Hive, you can use the following statement:<\/p>\n<pre class=\"post-pre\"><code><span class=\"hljs-keyword\">SELECT<\/span> <span class=\"hljs-operator\">*<\/span> <span class=\"hljs-keyword\">FROM<\/span> table_name <span class=\"hljs-keyword\">WHERE<\/span> column_name <span class=\"hljs-keyword\">IS<\/span> <span class=\"hljs-keyword\">NULL<\/span>;\r\n<\/code><\/pre>\n<p>It is important to note that in Hive, empty values and null values are different, so it is necessary to choose the appropriate query conditions based on the specific situation.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>In Hive, empty values and null values are two different concepts. Empty values usually refer to empty strings or empty collections, while null values indicate missing or unknown values. To search for null values in Hive, you can use the following statement: SELECT * FROM table_name WHERE column_name = &#8221;; To search for null values [&hellip;]<\/p>\n","protected":false},"author":9,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_import_markdown_pro_load_document_selector":0,"_import_markdown_pro_submit_text_textarea":"","footnotes":""},"categories":[1],"tags":[4880,7688,303,3885,4395],"class_list":["post-6394","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-data-query","tag-empty-values","tag-hive","tag-hiveql","tag-null-values"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v21.5 (Yoast SEO v21.5) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Hive Null &amp; Empty Values Query Guide - Blog - Silicon Cloud<\/title>\n<meta name=\"description\" content=\"Learn how to query null and empty values in Hive tables with SQL examples.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.silicloud.com\/blog\/how-to-query-for-null-values-and-empty-values-in-a-hive-table\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Hive Null &amp; Empty Values Query Guide\" \/>\n<meta property=\"og:description\" content=\"Learn how to query null and empty values in Hive tables with SQL examples.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.silicloud.com\/blog\/how-to-query-for-null-values-and-empty-values-in-a-hive-table\/\" \/>\n<meta property=\"og:site_name\" content=\"Blog - Silicon Cloud\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/SiliCloudGlobal\/\" \/>\n<meta property=\"article:published_time\" content=\"2024-03-14T04:11:49+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2025-08-02T03:03:59+00:00\" \/>\n<meta name=\"author\" content=\"Ava Mitchell\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@SiliCloudGlobal\" \/>\n<meta name=\"twitter:site\" content=\"@SiliCloudGlobal\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Ava Mitchell\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"1 minute\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/www.silicloud.com\/blog\/how-to-query-for-null-values-and-empty-values-in-a-hive-table\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/www.silicloud.com\/blog\/how-to-query-for-null-values-and-empty-values-in-a-hive-table\/\"},\"author\":{\"name\":\"Ava Mitchell\",\"@id\":\"https:\/\/www.silicloud.com\/blog\/#\/schema\/person\/a3e2658c2cb9fb2be95ae0a8861f4a64\"},\"headline\":\"Hive Null &#038; 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