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Why does mysql stop using indexes when date ranges are added to the query?

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#mysql #indexing #query-optimization #query-performance #sql-execution-plan
3.4k
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How to make faster queries on my mysql table?

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#mysql #optimization #query-optimization
280
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MySQL: Grouped by hour, need to show all hours, null where no data

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#mysql #sql #query-optimization
75
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How can i optimize this query on a big database tables having million rows

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#mysql #query-optimization
297
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SQL alternative to double subquery

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#mysql #group-by #subquery #query-optimization #aggregate-functions
86
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Make multi-subselect more efficient?

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#mysql #sql #query-optimization
2.1k
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Efficient way to get last record from the database

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#mysql #database #jpa #query-optimization
436
Views

Optimising codeigniter query, Join or Where

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#php #mysql #performance #codeigniter #query-optimization
111
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DB Engine Tuning Advisor suggestion improvement

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#sql-server #query-optimization #database-tuning-advisor
143
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OVER() vs Two Queries - Which is Most Efficient

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#sql #query-optimization #amazon-redshift #window-functions
102
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Optimize the execution of select

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#sql-server #indexing #query-optimization #clustered-index #non-clustered-index
682
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Optimizing MySQL InnoDB insert through PHP

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#php #mysql #optimization #query-optimization #innodb
193
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Ruby on Rails - Are transactions working with nested objects?

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#ruby-on-rails #activerecord #nested #query-optimization
131
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mysql select an average from order by with a query

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#mysql #query-optimization
105
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rewrite query to remove inner query in tsql to optimize

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#sql #sql-server #t-sql #query-optimization
301
Views

BaseX query optimization on join

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#query-optimization #basex
249
Views

SQL Server not using proper index for query

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#sql-server #indexing #query-optimization
111
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Optimizing a table for the latest/last rows in Azure SQL Server

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#sql-server #azure #indexing #query-optimization #azure-sql-database
61
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Optimizing SQL query?

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#mysql #query-optimization
76
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How to get count of total records with actual data in single procedure call python?

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#python #mysql #query-optimization

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