CqlQueryExtensions Methods |
The CqlQueryExtensions type exposes the following members.
Name | Description | |
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AllowFiltering<TSource> |
The ALLOW FILTERING option allows to explicitly allow queries that require filtering.
Please note that a query using ALLOW FILTERING may thus have unpredictable performance (for the definition above), i.e. even a query that selects a handful of records may exhibit performance that depends on the total amount of data stored in the cluster.
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Count<TSource> |
Returns the number of rows matching the query.
To execute this CqlScalar use Execute() method.
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Delete<TSource> |
Returns a representation of a DELETE cql statement
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DeleteIf<TSource> |
Returns a representation of a DELETE ... IF ... cql statement, for Lightweight Transactions support
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First<TSource>(CqlQuery<TSource>) |
Returns a CqlQuery which after execution will return the first element in a sequence.
To execute this CqlQuery use Execute() method.
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First<TSource>(Table<TSource>, Expression<Func<TSource, Boolean>>) |
Returns a CqlQuery which after execution returns the first element in a sequence that satisfies a specified condition.
To execute this CqlQuery use Execute() method.
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FirstOrDefault<TSource>(CqlQuery<TSource>) |
Returns a CqlQuery which after execution will return the first element of a sequence,
or a default value if the sequence contains no elements.
To execute this CqlQuery use Execute() method.
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FirstOrDefault<TSource>(Table<TSource>, Expression<Func<TSource, Boolean>>) |
Returns a CqlQuery which after execution will return the first element of the sequence that satisfies a condition
or a default value if no such element is found.
To execute this CqlQuery use Execute() method.
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GroupBy<TKey, TSource> |
Returns a CqlQuery which after execution returns grouped sequence of values based on a predicate.
To execute this CqlQuery use Execute() method.
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OrderBy<TSource, TKey> |
Sorts the elements, which are returned from CqlQuery, in ascending order according to a key.
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OrderByDescending<TSource, TKey> |
Sorts the elements, which are returned from CqlQuery, in ascending order according to a key.
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Select<TSource, TResult>(CqlQuery<TSource>, Expression<Func<TSource, TResult>>) |
Projects each element of a sequence into a new form.
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Select<TGroup, TSource, TResult>(CqlQuery<IGrouping<TGroup, TSource>>, Expression<Func<IGrouping<TGroup, TSource>, TResult>>) | ||
Take<TSource> |
Returns a CqlQuery which after execution will return IEnumerable<TSource>
with specified number of contiguous elements from the start of a sequence.
To execute this CqlQuery use Execute() method.
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ThenBy<TSource, TKey> |
Sorts the elements, which are returned from CqlQuery, in ascending order according to a key.
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ThenByDescending<TSource, TKey> |
Sorts the elements, which are returned from CqlQuery, in descending order according to a key.
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Update<TSource> |
Returns a representation of a UPDATE cql statement
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UpdateIf<TSource> |
Returns a representation of a UPDATE ... IF ... cql statement, for Lightweight Transactions support
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Where<TSource> |
Returns a CqlQuery which after execution returns filtered sequence of values based on a predicate.
To execute this CqlQuery use Execute() method.
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