Usage of "primary key"

A field that uniquely identifies a record in a table of a database.

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Set of attributes (columns) that uniquely specify a tuple (row) in a relation.

Использование термина primary key на английском

If you do, you risk primary key conflicts and duplicate data issues. 
 Mysql high availability 

If the primary key matches the previous key, we compare secondary keys. 
 Sed & awk, 2nd edition 

As a result, many instructional examples avoid using a primary key. 
 High performance mysql, 2nd edition 

Finally, rule 8 matches entries that contain only a primary key. 
 Sed & awk, 2nd edition 

We then measured the performance of joining the tables by the primary key columns. 
 High performance mysql, 2nd edition 

We drop the primary key when it is the same. 
 Sed & awk, 2nd edition 

The primary key doesn't match the previous primary key; the line is output as is: 
 Sed & awk, 2nd edition 

A clustering primary key can help performance, but it can also cause serious performance problems. 
 High performance mysql, 2nd edition 

Another option would be to omit the primary key and partition the data by day. 
 High performance mysql, 2nd edition 

You can generate your own nonconflicting primary key values. 
 High performance mysql, 2nd edition 

Here is an entry with only a primary key: 
 Sed & awk, 2nd edition 

If the table has a primary key on the slave, the lookup will be fast. 
 Mysql high availability 

Queries that use covering indexes can use the primary key values contained at the leaf node. 
 High performance mysql, 2nd edition 

If a table does not have a primary key, MySQL Cluster adds a surrogate primary key. 
 Mysql high availability 

The table has a fairly wide primary key: 
 High performance mysql, 2nd edition 

MyISAM primary key layout for the layouttest table 
 High performance mysql, 2nd edition 

primary

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Translations for primary key

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испанский

Primary key в диалектах

Соединенные Штаты Америки

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Значения термина primary key на английском