Filter Data

Filter is an operation used to filter data values from a large dataset, based on one or more conditions. If you apply one of these operations on the DataModel, it generates a new DataModel with the filtered data.

Types of filters

The predefined filters are:

  • Null
  • Not Null
  • Equal
  • Not Equal
  • Greater
  • Greater or Equal
  • Less
  • Less or Equal
  • Between
  • Begins with
  • Contains
  • Ends with

In this article, we will apply all the above filter operators and check the result based on the DataTable shown below:

Order Date Country Sales Quantity Shipping Cost
1/22/2011 Australia 59.724 6 27.43
1/22/2011 United States 125.248 3 3.64
1/22/2011 Australia 6.318 1 1.77
1/24/2011 Australia 110.808 3 9.92
1/24/2011 United States 40.08 6 4.31
1/24/2011 India 59.25 5 4.27
1/24/2011 United States 5.94 3 0.95
1/26/2011 India 79.38 3 13.82
1/26/2011 India 342.51 7 13.22

Null

Null is a filter operator which can be used to find any Null data.

In the above tabular data, the Country column consists of three countries. The code to filter Null data is given below:

DataModel nullOperation = model.Where("Country is null");

In the above code:

  • DataModel is a class.
  • nullOperation is an instance of the DataModel which holds the resultant data.

The output after running the above code looks like:

Order Date Country Sales Quantity Shipping Cost

The above table is empty because there is no Null value in the above data of the DataModel.

Not Null

Null is a filter operator which can be used to find all the data except the Null data.

In the above tabular data, the Country column consists of three countries. The code to filter not Null data is given below:

DataModel notNullOperation = model.Where("Country is not null");

In the above code:

  • DataModel is a class.
  • notNullOperation is an instance of the DataModel which holds the resultant data.

The output after running the above code looks like:

Order Date Country Sales Quantity Shipping Cost
1/22/2011 Australia 59.724 6 27.43
1/22/2011 United States 125.248 3 3.64
1/22/2011 Australia 6.318 1 1.77
1/24/2011 Australia 110.808 3 9.92
1/24/2011 United States 40.08 6 4.31
1/24/2011 India 59.25 5 4.27
1/24/2011 United States 5.94 3 0.95
1/26/2011 India 79.38 3 13.82
1/26/2011 India 342.51 7 13.22

The above output consists of all the rows of the tabular data which means there is no Null value in the above data of the DataModel.

Equal

Equals is a filter operator which can be used when you want to filter specific data value.

In the above tabular data, the Country column has three countries. The code to filter the data for United States, is given below:

DataModel equalOperation = model.Where("Country = United States");

In the above code:

  • DataModel is a class.
  • equalOperation is an instance of the DataModel which holds the resultant data.

The output after running the above code looks like:

Order Date Country Sales Quantity Shipping Cost
1/22/2011 United States 125.248 3 3.64
1/24/2011 United States 40.08 6 4.31
1/24/2011 United States 5.94 3 0.95

Not Equal

Not Equals is a filter operator operation which can be used when you want to omit some specific data value.

In the above tabular data, the Country column has three countries. The code to omit the data for United States is given below:

DataModel notEqualOperation = model.Where("Country != United States");

In the above code:

  • DataModel is a class.
  • notEqualOperation is an instance of the DataModel which holds the resultant data.

The output after running the above code looks like:

Order Date Country Sales Quantity Shipping Cost
1/22/2011 Australia 59.724 6 27.43
1/22/2011 Australia 6.318 1 1.77
1/24/2011 Australia 110.808 3 9.92
1/24/2011 India 59.25 5 4.27
1/26/2011 India 79.38 3 13.82
1/26/2011 India 342.51 7 13.22

Greater

Greater is a filter operator which can be used when you want to filter the data values greater than a specific numeric value.

In the above tabular data, the Sales column consists of numeric value. Let's apply the greater operator to filter the values greater than 100.

DataModel greaterOperation = model.Where("Sales > 100");

In the above code:

  • DataModel is a class.
  • greaterOperation is an instance of the DataModel which holds the resultant data.

The output after running the above code looks like:

Order Date Country Sales Quantity Shipping Cost
1/22/2011 United States 125.248 3 3.64
1/24/2011 Australia 110.808 3 9.92
1/26/2011 India 342.51 7 13.22

Greater or Equal

This filter operator is similar to greater filter which can be used when you want to filter the data values greater than a specific numeric value. Greater or Equal operation is used when you want to filter the data values greater and equal to the specific value.

In the above tabular data, the Quantity column consists of numeric value. Let's apply the Greater or Equal operator to filter the values greater and equal to 3.

DataModel greaterEqualOperation = model.Where("Quantity >= 3");

In the above code:

  • DataModel is a class.
  • greaterEqualOperation is an instance of the DataModel which holds the resultant data.

The output after running the above code looks like:

Order Date Country Sales Quantity Shipping Cost
1/22/2011 Australia 59.724 6 27.43
1/22/2011 United States 125.248 3 3.64
1/24/2011 Australia 110.808 3 9.92
1/24/2011 United States 40.08 6 4.31
1/24/2011 India 59.25 5 4.27
1/24/2011 United States 5.94 3 0.95
1/26/2011 India 79.38 3 13.82
1/26/2011 India 342.51 7 13.22

Less

Less is a filter operator which can be used when you want to filter the data values less than a specific numeric value.

In the above tabular data, the Sales column consists of numeric value. Let's apply the Less operator to filter the values less than 100.

DataModel lessOperation = model.Where("Sales < 100");

In the above code:

  • DataModel is a class.
  • lessOperation is an instance of the DataModel which holds the resultant data.

The output after running the above code looks like:

Order Date Country Sales Quantity Shipping Cost
1/22/2011 Australia 59.724 6 27.43
1/22/2011 Australia 6.318 1 1.77
1/24/2011 United States 40.08 6 4.31
1/24/2011 India 59.25 5 4.27
1/24/2011 United States 5.94 3 0.95
1/26/2011 India 79.38 3 13.82

Less or Equal

This filter operator is similar to less filter which can be used when you want to filter the data values less than a specific numeric value. Less or equal operation is used when you want to filter the data values less and equal to the specific value.

In the above tabular data, the Quantity column consists of numeric value. Let's apply the less or equal operator to filter the values less than and equal to 3.

DataModel lessEqualOperation = model.Where("Quantity <= 3");

In the above code:

  • DataModel is a class.
  • lessEqualOperation is an instance of the DataModel which holds the resultant data.

The output after running the above code looks like:

Order Date Country Sales Quantity Shipping Cost
1/22/2011 United States 125.248 3 3.64
1/22/2011 Australia 6.318 1 1.77
1/24/2011 Australia 110.808 3 9.92
1/24/2011 United States 5.94 3 0.95
1/26/2011 India 79.38 3 13.82

Between

Between is a filter operator which can be used when you want to filter the data between specific date/time or value.

In the above tabular data, the Order Date column consists of date/time values. Let's apply the between operator to filter the values from 1/22/2011 to 1/24/2011.

DataModel betweenOperation = model.Where("Order Date is between 1/22/2011 to 1/24/2011");

In the above code:

  • DataModel is a class.
  • betweenOperation is an instance of the DataModel which holds the resultant data.

The output after running the above code looks like:

Order Date Country Sales Quantity Shipping Cost
1/22/2011 Australia 59.724 6 27.43
1/22/2011 United States 125.248 3 3.64
1/22/2011 Australia 6.318 1 1.77
1/24/2011 Australia 110.808 3 9.92
1/24/2011 United States 40.08 6 4.31
1/24/2011 India 59.25 5 4.27
1/24/2011 United States 5.94 3 0.95

Begins with

Begins with is a filter operator which can be used when you want to filter a string data which begins with a specific string value.

In the above tabular data, the Country column consists of string values. Let's apply the begins with operator to filter the Countries whose name begins with A.

DataModel beginsWithOperation = model.Where("Country begins with A");

In the above code:

  • DataModel is a class.
  • beginsWithOperation is an instance of the DataModel which holds the resultant data.

The output after running the above code looks like:

Order Date Country Sales Quantity Shipping Cost
1/22/2011 Australia 59.724 6 27.43
1/22/2011 Australia 6.318 1 1.77
1/24/2011 Australia 110.808 3 9.92

Contains

Contains is a filter operator which can be used when you want search specific data using a particular string value.

Contains operator can search:

  • A word or phrase.
  • The prefix of a word or phrase.
  • A word near another word.

In the above tabular data, the Country column consists of string values. Let's apply the contains operator to filter Countries which contains "d".

DataModel containsOperation = model.Where("Country contains d");

In the above code:

  • DataModel is a class.
  • containsOperation is an instance of the DataModel which holds the resultant data.

The output after running the above code looks like:

Order Date Country Sales Quantity Shipping Cost
1/22/2011 United States 125.248 3 3.64
1/24/2011 United States 40.08 6 4.31
1/24/2011 India 59.25 5 4.27
1/24/2011 United States 5.94 3 0.95
1/26/2011 India 79.38 3 13.82
1/26/2011 India 342.51 7 13.22

Ends with

Ends with is a filter operator which can be used when you want to filter a string data which ends with a specific string value.

In the above tabular data, the Country column consists of string values. Let's apply the ends with operator to filter the Countries whose name ends with a.

DataModel endsWithOperation = model.Where("Country ends with a");

In the above code:

  • DataModel is a class.
  • endsWithOperation is an instance of the DataModel which holds the resultant data.

The output after running the above code looks like:

Order Date Country Sales Quantity Shipping Cost
1/22/2011 Australia 59.724 6 27.43
1/22/2011 Australia 6.318 1 1.77
1/24/2011 Australia 110.808 3 9.92
1/24/2011 India 59.25 5 4.27
1/26/2011 India 79.38 3 13.82
1/26/2011 India 342.51 7 13.22

Logical Operator

FusionCharts DataEngine supports logical operators which filters the data based on some condition. In this section we will discuss about:

  • AND &
  • OR operators

AND Operator

AND operator is used when you want to combine multiple conditions like Between, Equals or Greater.

In the above tabular data, the Order Date column consists of date/time values and the Country column has three countries. The code to filter the data for United States from 1/22/2011 to 1/24/2011 is given below:

DataModel andOperator = model.Where("Order Date is between 1/22/2011 to 1/24/2011 and Country = United States");

In the above code:

  • DataModel is a class.
  • andOperator is an instance of the DataModel which holds the resultant data.
  • Between filter operation filters the Order Date column to the specified date/time.
  • Equals filter operation filters the Country column to United States.

The output after running the above code looks like:

Order Date Country Sales Quantity Shipping Cost
1/22/2011 United States 125.248 3 3.64
1/24/2011 United States 40.08 6 4.31
1/24/2011 United States 5.94 3 0.95

OR Operator

OR operator is used when you want to combine multiple conditions like Between, Equals or Greater. The output filtered will be based on one of the conditions.

In the above tabular data, the Country column has three countries. To combine more than one conditions, use more than one OR as part of the WHERE clause. The code to filter the data for Countries starting from I and A is given below:

// Name starts with M or Name starts with L
DataModel orOperator = model.Where("Name starts with I or Name starts with A");

In the above code:

  • DataModel is a class.
  • orOperator is an instance of the DataModel which holds the resultant data.

The output after running the above code looks like:

Order Date Country Sales Quantity Shipping Cost
1/22/2011 Australia 59.724 6 27.43
1/22/2011 Australia 6.318 1 1.77
1/24/2011 Australia 110.808 3 9.92
1/24/2011 India 59.25 5 4.27
1/26/2011 India 79.38 3 13.82
1/26/2011 India 342.51 7 13.22
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