Cardinality (SQL statements)
In SQL (Structured Query Language), the term cardinality refers to the uniqueness of data values contained in a particular column (attribute) of a database table. The lower the cardinality, the more duplicated elements in a column. Thus, a column with the lowest possible cardinality would have the same value for every row. SQL databases use cardinality to help determine the optimal query plan for a given query.
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- enIn SQL (Structured Query Language), the term cardinality refers to the uniqueness of data values contained in a particular column (attribute) of a database table. The lower the cardinality, the more duplicated elements in a column. Thus, a column with the lowest possible cardinality would have the same value for every row. SQL databases use cardinality to help determine the optimal query plan for a given query.
- Has abstract
- enIn SQL (Structured Query Language), the term cardinality refers to the uniqueness of data values contained in a particular column (attribute) of a database table. The lower the cardinality, the more duplicated elements in a column. Thus, a column with the lowest possible cardinality would have the same value for every row. SQL databases use cardinality to help determine the optimal query plan for a given query.
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- Cardinality (SQL statements)
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- enCardinality (SQL statements)
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- Boolean data type
- Cardinality
- Category:SQL
- Database table
- Flag (computing)
- Query plan
- Relational database
- SQL
- Uniqueness quantification
- SameAs
- Cardinalidade (modelagem de dados)
- gLbc
- Kardinalität (Datenbanken)
- m.027t2qz
- Q1729096
- Subject
- Category:SQL
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- Cardinality (SQL statements)?oldid=1055230635&ns=0
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- 3066
- Wikipage page ID
- 9004445
- Wikipage revision ID
- 1055230635
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