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tanelpoder.com | ||
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www.dbaglobe.com
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| | | | | A blog about on new technologie. Hands-on note about Hadoop, Cloudera, Hortonworks, NoSQL, Cassandra, Neo4j, MongoDB, Oracle, SQL Server, Linux, etc. | |
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iusoltsev.wordpress.com
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| | | | | ??????? ?????? ?? ??????? ??????????? 465 ??????! SELECT A.ID, A.LOGIN, A.NAME, A.LASTNAME, A.EMAIL FROM ACCOUNT A WHERE (A.LOGIN LIKE '%%') AND (A.NAME LIKE '%????????%' OR A.LASTNAME LIKE '%????????%') AND A.COMPANY_ID = 1 ORDER BY A.LOGIN ??? ???????, ????????? ???? ?? ??????? A.COMPANY_ID = 1 ???????? ??????? ???????????????? SQL> SELECT 'ALL' as "Condition", count(*) FROM ACCOUNT... | |
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mauro-pagano.com
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| | | | | When upgrading a database sometime you find that one or more SQLs run slower because ofa new and suboptimal execution plan. Usually the number of those SQLs is pretty small compared to the overall workload but it's not straightforward to understand what caused the plan change so even a small number can become tricky to... | |
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connor-mcdonald.com
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| | | Ever heard of a BAND join? It's not actually new, it has been around since 12.2. Jonathan Lewis wrote up a nice post on it was back in 2017 but in a nutshell MERGE join done without a band join SQL> select 2 e1.last_name|| ' has salary roughly between '|| e2.last_name comparison 3 from 4... | ||