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mysql - Could I make a column in a table only allows one 'true' value and all other rows should be 'false'
In MySQL, Can I put a restriction like below at database level? I need to make sure 1. a specific column can ... should be having 'true' value? See Question&Answers more detail:os...
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mysql - 'LIKE ('%this%' OR '%that%') and something=else' not working
I have a select query where I am trying to search strings for multiple patterns LIKE ('%this%' or '%that%' ) ... both, how will it handle that? See Question&Answers more detail:os...
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mysql - Handling large records in a Java EE application
There is a table phonenumbers with two columns: id, and number. There are about half a million entries in the ... a limited no. of people. See Question&Answers more detail:os...
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mysql - SQL Scripts - Does the equivalent of a #define exist?
I have a script that I use to construct both the tables and stored procedures. For example I have a column ... a solution to this problem? See Question&Answers more detail:os...
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mysql - Removing duplicate rows from a table
id lat long speed date address 1 22.92138131 72.44103313 3.96 km/h 2011-09-26 National, Gujarat, India ... rows according to the address. See Question&Answers more detail:os...
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mysql - Python MySQLdb WHERE SQL LIKE
I have recently started to learn Python and MySQL for web purposes and I have run into a following problem : I ... c.close() Thanks in advance. See Question&Answers more detail:os...
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mysql - Minimal example of using select... for update to isolate rows
UPDATE: There is now SKIP LOCKED and NOWAIT for Mysql and Postgres. Old question follows. I want concurrent ... affected (0.00 sec) See Question&Answers more detail:os...
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mysql - How to cascade persist using JPA/EclipseLink
I am having problems performing a cascade persist operation on a parent entity. When the child entity is persisted, the ... ('addr_gen', 0); See Question&Answers more detail:os...
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mysql - How to cascade persist using JPA/EclipseLink
I am having problems performing a cascade persist operation on a parent entity. When the child entity is persisted, the ... ('addr_gen', 0); See Question&Answers more detail:os...
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mysql - Minimal example of using select... for update to isolate rows
UPDATE: There is now SKIP LOCKED and NOWAIT for Mysql and Postgres. Old question follows. I want concurrent ... affected (0.00 sec) See Question&Answers more detail:os...
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mysql - How to cascade persist using JPA/EclipseLink
I am having problems performing a cascade persist operation on a parent entity. When the child entity is persisted, the ... ('addr_gen', 0); See Question&Answers more detail:os...
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mysql - Python MySQLdb WHERE SQL LIKE
I have recently started to learn Python and MySQL for web purposes and I have run into a following problem : I ... c.close() Thanks in advance. See Question&Answers more detail:os...
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mysql - Minimal example of using select... for update to isolate rows
UPDATE: There is now SKIP LOCKED and NOWAIT for Mysql and Postgres. Old question follows. I want concurrent ... affected (0.00 sec) See Question&Answers more detail:os...
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Oct 24, 2021
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mysql - How to cascade persist using JPA/EclipseLink
I am having problems performing a cascade persist operation on a parent entity. When the child entity is persisted, the ... ('addr_gen', 0); See Question&Answers more detail:os...
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Oct 24, 2021
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mysql - 'LIKE ('%this%' OR '%that%') and something=else' not working
I have a select query where I am trying to search strings for multiple patterns LIKE ('%this%' or '%that%' ) ... both, how will it handle that? See Question&Answers more detail:os...
asked
Oct 24, 2021
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666
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mysql - Handling large records in a Java EE application
There is a table phonenumbers with two columns: id, and number. There are about half a million entries in the ... a limited no. of people. See Question&Answers more detail:os...
asked
Oct 24, 2021
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Technique[技术]
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mysql - SQL Scripts - Does the equivalent of a #define exist?
I have a script that I use to construct both the tables and stored procedures. For example I have a column ... a solution to this problem? See Question&Answers more detail:os...
asked
Oct 24, 2021
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71.8m
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949
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mysql - Removing duplicate rows from a table
id lat long speed date address 1 22.92138131 72.44103313 3.96 km/h 2011-09-26 National, Gujarat, India ... rows according to the address. See Question&Answers more detail:os...
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Oct 24, 2021
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mysql - Python MySQLdb WHERE SQL LIKE
I have recently started to learn Python and MySQL for web purposes and I have run into a following problem : I ... c.close() Thanks in advance. See Question&Answers more detail:os...
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Oct 24, 2021
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762
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mysql - Minimal example of using select... for update to isolate rows
UPDATE: There is now SKIP LOCKED and NOWAIT for Mysql and Postgres. Old question follows. I want concurrent ... affected (0.00 sec) See Question&Answers more detail:os...
asked
Oct 24, 2021
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793
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mysql - How to cascade persist using JPA/EclipseLink
I am having problems performing a cascade persist operation on a parent entity. When the child entity is persisted, the ... ('addr_gen', 0); See Question&Answers more detail:os...
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Oct 24, 2021
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mysql - Delete huge amounts of data from huge table
I have two tables. Let's call them KEY and VALUE. KEY is small, somewhere around 1.000.000 records. VALUE ... Some nice tricks that could help? See Question&Answers more detail:os...
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mysql - Many tables or rows, which one is more efficient in SQL?
I'm building a program that stores news headlines for companies and its timestamp from various sources. Let's ... terms of performance and why? See Question&Answers more detail:os...
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mysql - Illegal mix of collations for operation 'concat'
I'm trying to execute this concat query in mysql SELECT CONCAT(if(fName,fName,''),Name) From Student ... of collations for operation 'concat' See Question&Answers more detail:os...
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mysql - What does # mean in sql?
Does anyone know what something like OR 1# means in the context of mysql injection? See Question&Answers more detail:os...
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mysql - Why does Rails ignore a Rollback in a (pseudo)nested transaction?
As per the docs ActiveRecord::Transactions::ClassMethods, a non-new nested transaction will ignore a Rollback. From ... within a nested child? See Question&Answers more detail:os...
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mysql - spring jpa application.properties useSSL
I am trying to turn off ssl, to my local mysql database. But I cannot find the actual property in a ... mysql://localhost:3306/test&useSSL=false See Question&Answers more detail:os...
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mysql - Get row with highest or lowest value from a GROUP BY
I'm trying to get the row with the highest/lowest number, after performing a GROUP BY: Here is my test data ... on what the lowest value is? See Question&Answers more detail:os...
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