GrizzIT DBAL SQL provides a SQL implementation for GrizzIT DBAL. This package only implements the query assembly part.
To install the package run the following command:
composer require grizz-it/dbal-sql
Some queries accept filters. Filters are used to narrow down the amount of
returned results. These filters are based on the QueryFilterInterface
from the
grizz-it/dbal
package.
Filters can be grouped in the QueryFilterGroup
object. All filters inside this
group are separated by an AND statement. If a query object accepts multiple filter
groups, the filter groups will be separated by an OR statement.
- QueryFilterGroup: The base filter object expected by most queries.
Filters can be added to the group after instantiation:
use GrizzIt\Dbal\Sql\Component\Filter\QueryFilterGroup;
use GrizzIt\Dbal\Sql\Component\Filter\ComparatorFilter;
use GrizzIt\Dbal\Sql\Common\ComparatorEnum;
// Create the filter group
$filterGroup = new QueryFilterGroup;
//Create the filter "column='value'"
$filter = new ComparatorFilter(
'column',
'value',
ComparatorEnum::EQ()
);
//Add the filter
$filterGroup->addFilter($filter);
- ComparatorFilter: Compare a column to a value with a standard comparator.
- ExistsFilter: Adds an EXISTS statement with a sub-query as a filter.
- QueryInFilter: Connects a default comparator with a sub-query as a filter.
- QueryOperatorFilter: Create a ANY or ALL filter in combination with a comparator for a sub-query.
- RelationalComparatorFilter: Creates
a direct value injected filter. This filter does not use a parameter, but
operates similar to the
ComparatorFilter
.
Queries are created by instantiating and configuring and object, before passing it to the connection.
Some queries have shared logic and thus implement common traits.
- FilterableQueryTrait: This trait is implemented by queries that support filters.
- JoinableQueryTrait: This trait is implemented by queries that support joining multiple tables in a single query.
- PageableQueryTrait: This trait is
implemented by queries that support paging (
LIMIT
with(out) anOFFSET
). - SortableQueryTrait: This trait is implemented by queries that support sorting.
Some options and queries have a limitation in the options that can be passed to the object. Enums are used for this.
- ColumnAttributeEnum
- ColumnDefaultEnum
- ColumnTypeEnum
- ComparatorEnum
- IndexTypeEnum
- OperatorEnum
- ShowTypeEnum
- UnionEnum
The queries are sorted by their affecting goal. There are also a few standard queries which don't fit in any category.
- BatchQuery: Joins multiple queries for a single line execution.
- RawQuery: If none of the query object fit the bill, this object can be used to execute a custom query.
- AbstractTableQuery: Forms the base for the other table queries.
- AlterTableQuery
- CreateTableQuery
- DropTableQuery
Column operations are defined through:
Please see CHANGELOG for more information on what has changed recently.
Please see CONTRIBUTING and CODE_OF_CONDUCT for details.
Copyright (c) GrizzIT
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