{"id":10989,"date":"2018-02-23T16:03:58","date_gmt":"2018-02-23T15:03:58","guid":{"rendered":"https:\/\/www.dbi-services.com\/blog\/new-sha-2-functions-showing-up-in-postgresql-11\/"},"modified":"2018-02-23T16:03:58","modified_gmt":"2018-02-23T15:03:58","slug":"new-sha-2-functions-showing-up-in-postgresql-11","status":"publish","type":"post","link":"https:\/\/www.dbi-services.com\/blog\/new-sha-2-functions-showing-up-in-postgresql-11\/","title":{"rendered":"New SHA-2 functions showing up in PostgreSQL 11"},"content":{"rendered":"<p>A <a href=\"https:\/\/git.postgresql.org\/pg\/commitdiff\/10cfce34c0fe20d2caed5750bbc5c315c0e4cc63\" target=\"_blank\" rel=\"noopener\">recent commit<\/a> announced new SHA-2 functions coming up in PostgreSQL 11. Until now you can use the <a href=\"https:\/\/www.postgresql.org\/docs\/current\/static\/functions-string.html\" target=\"_blank\" rel=\"noopener\">md5 function<\/a> to generate hashes for test data or whatever you want. This commit adds more functions you can use for that. Let&#8217;s see how they work.<\/p>\n<p><!--more--><\/p>\n<p>When you want to try what follows make sure you are on the development version of PostgreSQL. You can find a little <a href=\"https:\/\/www.dbi-services.com\/blog\/testing-new-postgresql-features-before-alphabetarc-releases\/\" target=\"_blank\" rel=\"noopener\">howto here<\/a>.<\/p>\n<p>For generating test data in PostgreSQL I often use things like that:<\/p>\n<pre class=\"brush: sql; gutter: true; first-line: 1\">\npostgres@pgbox:\/home\/postgres\/ [PGDEV] psql\npsql (11devel)\nType \"help\" for help.\n\npostgres=# ! cat a.sql\ndrop table if exists t1;\ncreate table t1 as\n  select a.*\n       , md5(a::varchar)\n    from generate_series (1,1000000) a;\npostgres=# i a.sql\npsql:a.sql:1: NOTICE:  table \"t1\" does not exist, skipping\nDROP TABLE\nSELECT 1000000\npostgres=# select * from t1 limit 5;\n a |               md5                \n---+----------------------------------\n 1 | c4ca4238a0b923820dcc509a6f75849b\n 2 | c81e728d9d4c2f636f067f89cc14862c\n 3 | eccbc87e4b5ce2fe28308fd9f2a7baf3\n 4 | a87ff679a2f3e71d9181a67b7542122c\n 5 | e4da3b7fbbce2345d7772b0674a318d5\n(5 rows)\n<\/pre>\n<p>Now we have more function to chose from:<\/p>\n<pre class=\"brush: sql; gutter: true; first-line: 1; highlight: [17,18,19,20,21]\">\npostgres=# df *sha*\n                                       List of functions\n   Schema   |               Name               | Result data type | Argument data types | Type \n------------+----------------------------------+------------------+---------------------+------\n pg_catalog | pg_advisory_lock_shared          | void             | bigint              | func\n pg_catalog | pg_advisory_lock_shared          | void             | integer, integer    | func\n pg_catalog | pg_advisory_unlock_shared        | boolean          | bigint              | func\n pg_catalog | pg_advisory_unlock_shared        | boolean          | integer, integer    | func\n pg_catalog | pg_advisory_xact_lock_shared     | void             | bigint              | func\n pg_catalog | pg_advisory_xact_lock_shared     | void             | integer, integer    | func\n pg_catalog | pg_relation_is_publishable       | boolean          | regclass            | func\n pg_catalog | pg_stat_reset_shared             | void             | text                | func\n pg_catalog | pg_try_advisory_lock_shared      | boolean          | bigint              | func\n pg_catalog | pg_try_advisory_lock_shared      | boolean          | integer, integer    | func\n pg_catalog | pg_try_advisory_xact_lock_shared | boolean          | bigint              | func\n pg_catalog | pg_try_advisory_xact_lock_shared | boolean          | integer, integer    | func\n pg_catalog | sha224                           | bytea            | bytea               | func\n pg_catalog | sha256                           | bytea            | bytea               | func\n pg_catalog | sha384                           | bytea            | bytea               | func\n pg_catalog | sha512                           | bytea            | bytea               | func\n<\/pre>\n<p>Using the same test script as before but with the sha224 function:<\/p>\n<pre class=\"brush: sql; gutter: true; first-line: 1; highlight: [5]\">\npostgres=# ! cat a.sql\ndrop table if exists t1;\ncreate table t1 as\n  select a.*\n       , sha224(a::text::bytea)\n    from generate_series (1,1000000) a;\npostgres=# i a.sql\nDROP TABLE\nSELECT 1000000\npostgres=# select * from t1 limit 5;\n a |                           sha224                           \n---+------------------------------------------------------------\n 1 | xe25388fde8290dc286a6164fa2d97e551b53498dcbf7bc378eb1f178\n 2 | x58b2aaa0bfae7acc021b3260e941117b529b2e69de878fd7d45c61a9\n 3 | x4cfc3a1811fe40afa401b25ef7fa0379f1f7c1930a04f8755d678474\n 4 | x271f93f45e9b4067327ed5c8cd30a034730aaace4382803c3e1d6c2f\n 5 | xb51d18b551043c1f145f22dbde6f8531faeaf68c54ed9dd79ce24d17\n(5 rows)\n<\/pre>\n<p>You can use the other functions in the same way, of course.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>A recent commit announced new SHA-2 functions coming up in PostgreSQL 11. Until now you can use the md5 function to generate hashes for test data or whatever you want. This commit adds more functions you can use for that. Let&#8217;s see how they work.<\/p>\n","protected":false},"author":29,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[229],"tags":[77],"type_dbi":[],"class_list":["post-10989","post","type-post","status-publish","format-standard","hentry","category-database-administration-monitoring","tag-postgresql"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.2 (Yoast SEO v27.2) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>New SHA-2 functions showing up in PostgreSQL 11 - dbi Blog<\/title>\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.dbi-services.com\/blog\/new-sha-2-functions-showing-up-in-postgresql-11\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"New SHA-2 functions showing up in PostgreSQL 11\" \/>\n<meta property=\"og:description\" content=\"A recent commit announced new SHA-2 functions coming up in PostgreSQL 11. Until now you can use the md5 function to generate hashes for test data or whatever you want. This commit adds more functions you can use for that. 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He has more than 15 years of experience in management, engineering and optimization of databases and infrastructures, especially on Oracle and PostgreSQL. Since the beginning of his career, he has specialized in Oracle Technologies and is Oracle Certified Professional 12c and Oracle Certified Expert RAC\/GridInfra. Over time, Daniel has become increasingly interested in open source technologies, becoming \u201cTechnology Leader Open Infrastructure\u201d and PostgreSQL expert. \u00a0Based on community or EnterpriseDB tools, he develops and installs complex high available solutions with PostgreSQL. He is also a certified PostgreSQL Plus 9.0 Professional and a Postgres Advanced Server 9.4 Professional. He is a regular speaker at PostgreSQL conferences in Switzerland and Europe. Today Daniel is also supporting our customers on AWS services such as AWS RDS, database migrations into the cloud, EC2 and automated infrastructure management with AWS SSM (System Manager). He is a certified AWS Solutions Architect Professional. Prior to dbi services, Daniel was Management System Engineer at LC SYSTEMS-Engineering AG in Basel. Before that, he worked as Oracle Developper &amp;\u00a0Project Manager at Delta Energy Solutions AG in Basel (today Powel AG). Daniel holds a diploma in Business Informatics (DHBW, Germany). His branch-related experience mainly covers the pharma industry, the financial sector, energy, lottery and telecommunications.\",\"sameAs\":[\"https:\/\/x.com\/westermanndanie\"],\"url\":\"https:\/\/www.dbi-services.com\/blog\/author\/daniel-westermann\/\"}]}<\/script>\n<!-- \/ Yoast SEO Premium plugin. -->","yoast_head_json":{"title":"New SHA-2 functions showing up in PostgreSQL 11 - dbi Blog","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/www.dbi-services.com\/blog\/new-sha-2-functions-showing-up-in-postgresql-11\/","og_locale":"en_US","og_type":"article","og_title":"New SHA-2 functions showing up in PostgreSQL 11","og_description":"A recent commit announced new SHA-2 functions coming up in PostgreSQL 11. Until now you can use the md5 function to generate hashes for test data or whatever you want. This commit adds more functions you can use for that. 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He has more than 15 years of experience in management, engineering and optimization of databases and infrastructures, especially on Oracle and PostgreSQL. Since the beginning of his career, he has specialized in Oracle Technologies and is Oracle Certified Professional 12c and Oracle Certified Expert RAC\/GridInfra. Over time, Daniel has become increasingly interested in open source technologies, becoming \u201cTechnology Leader Open Infrastructure\u201d and PostgreSQL expert. \u00a0Based on community or EnterpriseDB tools, he develops and installs complex high available solutions with PostgreSQL. He is also a certified PostgreSQL Plus 9.0 Professional and a Postgres Advanced Server 9.4 Professional. He is a regular speaker at PostgreSQL conferences in Switzerland and Europe. Today Daniel is also supporting our customers on AWS services such as AWS RDS, database migrations into the cloud, EC2 and automated infrastructure management with AWS SSM (System Manager). He is a certified AWS Solutions Architect Professional. Prior to dbi services, Daniel was Management System Engineer at LC SYSTEMS-Engineering AG in Basel. Before that, he worked as Oracle Developper &amp;\u00a0Project Manager at Delta Energy Solutions AG in Basel (today Powel AG). Daniel holds a diploma in Business Informatics (DHBW, Germany). His branch-related experience mainly covers the pharma industry, the financial sector, energy, lottery and telecommunications.","sameAs":["https:\/\/x.com\/westermanndanie"],"url":"https:\/\/www.dbi-services.com\/blog\/author\/daniel-westermann\/"}]}},"_links":{"self":[{"href":"https:\/\/www.dbi-services.com\/blog\/wp-json\/wp\/v2\/posts\/10989","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.dbi-services.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.dbi-services.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.dbi-services.com\/blog\/wp-json\/wp\/v2\/users\/29"}],"replies":[{"embeddable":true,"href":"https:\/\/www.dbi-services.com\/blog\/wp-json\/wp\/v2\/comments?post=10989"}],"version-history":[{"count":0,"href":"https:\/\/www.dbi-services.com\/blog\/wp-json\/wp\/v2\/posts\/10989\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.dbi-services.com\/blog\/wp-json\/wp\/v2\/media?parent=10989"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.dbi-services.com\/blog\/wp-json\/wp\/v2\/categories?post=10989"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.dbi-services.com\/blog\/wp-json\/wp\/v2\/tags?post=10989"},{"taxonomy":"type","embeddable":true,"href":"https:\/\/www.dbi-services.com\/blog\/wp-json\/wp\/v2\/type_dbi?post=10989"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}