Term Gallery logo

Significados de primary key em inglês

Wikidata

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

russo
первичный ключ
português
chave primaria
espanhol
superclave

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

chave primaria
Uso de primary key em inglês
1
If you do, you risk primary key conflicts and duplicate data issues.
Mysql high availability
2
If the primary key matches the previous key, we compare secondary keys.
Sed & awk, 2nd edition
3
As a result, many instructional examples avoid using a primary key.
High performance mysql, 2nd edition
4
Finally, rule 8 matches entries that contain only a primary key.
Sed & awk, 2nd edition
5
We then measured the performance of joining the tables by the primary key columns.
High performance mysql, 2nd edition
6
We drop the primary key when it is the same.
Sed & awk, 2nd edition
7
The primary key doesn't match the previous primary key; the line is output as is:
Sed & awk, 2nd edition
8
A clustering primary key can help performance, but it can also cause serious performance problems.
High performance mysql, 2nd edition
9
Another option would be to omit the primary key and partition the data by day.
High performance mysql, 2nd edition
10
You can generate your own nonconflicting primary key values.
High performance mysql, 2nd edition
11
Here is an entry with only a primary key:
Sed & awk, 2nd edition
12
If the table has a primary key on the slave, the lookup will be fast.
Mysql high availability
13
Queries that use covering indexes can use the primary key values contained at the leaf node.
High performance mysql, 2nd edition
14
If a table does not have a primary key, MySQL Cluster adds a surrogate primary key.
Mysql high availability
15
The table has a fairly wide primary key:
High performance mysql, 2nd edition
16
MyISAM primary key layout for the layouttest table
High performance mysql, 2nd edition
Esta colocação é formada por:
Translations for primary key
Primary key nas variantes da língua
Estados Unidos da América
Comum