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When to use Hadoop, HBase, Hive and Pig?
...ities on top of an existing Hadoop cluster. Along with that it provides an SQL like interface which makes your work easier, in case you are coming from an SQL background. You can create tables in Hive and store data there. Along with that you can even map your existing HBase tables to Hive and opera...
ERROR 1045 (28000): Access denied for user 'root'@'localhost' (using password: YES)
... a manual to install a software suite on Ubuntu. I have no knowledge of mySQL at all, actually. I have done the following installations on my Ubuntu.
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TSQL - How to use GO inside of a BEGIN .. END block?
... +1! This is the ONLY practical Answer so far for use in a SS SQLCMD Mode Script (i.e. a master deployment script) that calls (via :r command) other SS Scripts (i.e. sub-deployment scripts) with some of those calls inside if Statements. Oded's, mellamokb's and Andy Joiner's Answers of ...
Drop multiple tables in one shot in mysql
...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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SensorUtil 传感器工具扩展：在后台和屏幕关闭时保持传感器工作 · App Inv...
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此组件是通用平均器，可用于任何数值的平滑处理，包括不被 UrsSensorAverager 支持的传感器（如 MagneticFieldSensor）。
属性 Properties
平均值 Average
计算算术平均值。
缓存大小 CacheSize
要聚合的值的数量...
SQL SELECT speed int vs varchar
I'm in the process of creating a table and it made me wonder.
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difference between primary key and unique key
I'm using mysql database. I have a confusion between primary key and unique key.
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What is the difference between declarative and imperative programming? [closed]
...you want; you are only saying what you want. You could say the same about SQL.
One benefit of declarative programming is that it allows the compiler to make decisions that might result in better code than what you might make by hand. Running with the SQL example, if you had a query like
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How to create a MySQL hierarchical recursive query
I have a MySQL table which is as follows:
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How can I get a list of all functions stored in the database of a particular schema in PostgreSQL?
I want to be able to connect to a PostgreSQL database and find all of the functions for a particular schema.
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