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Reorder / reset auto increment primary key
I have a MySQL table with an auto increment primary key. I deleted some rows in the middle of the table. Now I have, for example, something like this in the ID column: 12, 13, 14, 19, 20. I deleted the 15, 16, 17 and 18 rows.
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Drop multiple tables in one shot in mysql
...m in the correct order, nor whether they actually exist.
N.B. this is for MySQL only (as in the question). Other databases likely have different methods for doing this.
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What is a proper naming convention for MySQL FKs?
Being that they must be unique, what should I name FK's in a MySQL DB?
4 Answers
4
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Datetime equal or greater than today in MySQL
...Date) = DATE(NOW())
Read more:
http://www.tomjepson.co.uk/tutorials/36/mysql-select-where-date-today.html
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【PM干货】2015年阿里业务型PM笔试题 - 项目管理 - 清泛网 - 专注C/C++及内核技术
...、主观题（四选二）
1、最近大数据非常的火热，而请问如何利用大数据与搜索引擎结合，为用户提供更好的产品或服务。
大致答案构成：将大数据分为几个类型，向不同的用户提供不同的类型组合构成新的产品或者服务。
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MySQL: Selecting multiple fields into multiple variables in a stored procedure
...T multiple columns into multiple variables within the same select query in MySQL?
3 Answers
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大数据时代的数据化运营 - 资讯 - 清泛网 - 专注C/C++及内核技术
...响。今天我们采访到了中清龙图副总裁李翀为广大cp讲解如何在大数据时代进行数据运营。
什么是大数据？
大数据第一个特点是数据量特别大，举个例子，比如一个人站在这里，仅知道他的身高体重等等，是没有什么实际意义...
Add 2 hours to current time in MySQL?
Which is the valid syntax of this query in MySQL?
5 Answers
5
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How to find duplicates in 2 columns not 1
I have a MySQL database table with two columns that interest me. Individually they can each have duplicates, but they should never have a duplicate of BOTH of them having the same value.
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How to fix “Incorrect string value” errors?
...ame` = `tables`.`table_collation`
;
Last, check your database settings:
mysql> show variables like '%colla%';
mysql> show variables like '%charac%';
If source, transport and destination are UTF-8, your problem is gone;)
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