JSDataSet

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rowIndex
Get or set the record index of the dataset.

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{column:width=80px}{column}{column}{column}

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Method Summary

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addColumn(name, index, type)
adds a column with the specified name to the dataset.

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void

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addHTMLProperty(row, col, name, value)
Add an HTML property to an HTML tag produced in getAsHTML().

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void

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addRow(index, array)
Add a row to the dataset.

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createDataSource(name, types)
Create a data source from the data set with specified name and using specified types.

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getAsHTML(escape_values, escape_spaces, multi_line_markup, pretty_indent, add_column_names)
Get the dataset as an html table.

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getAsText(column_separator, row_separator, value_delimiter, add_column_names)
Get the dataset as formatted text.

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Object[]

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getColumnAsArray(index)
Get the column data of a dataset as an Array.

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getColumnName(index)
Get a column name based on index.

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ServoyException

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getException()
Get the database exception if an error occurred.

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getMaxColumnIndex()
Get the number of columns in the dataset.

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getMaxRowIndex()
Get the number of rows in the dataset.

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Object[]

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getRowAsArray(index)
Get the row data of a dataset as an Array.

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Object

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getValue(row, col)
Get the value specified by row and column position from the dataset.

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hadMoreData()
Return true if there is more data in the resultset then specified by maxReturnedRows at query time.

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removeColumn(index)
Remove a column by index from the dataset.

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void

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removeRow(row)
Remove a row from the dataset.

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void

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setValue(row, col, obj)
Set the value specified by row and column position from the dataset.

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void

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sort(col, sort_direction)
Sort the dataset on the given column in ascending or descending.

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{column:width=100%}{column}

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Property Details

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rowIndex

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Get or set the record index of the dataset.

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Parameters

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Returns

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Also see

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External links

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Sample

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//assuming the variable dataset contains a dataset
//to set the rowIndex:
dataset.rowIndex = 1 //sets the rowIndex to the first row (dataset is 1-based)
//to retrieve the rowIndex of the currently selected row
var currRow = dataset.rowIndex

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{column:width=100%}{column}

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Method Details

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addColumn

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addColumn

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(name, index, type)

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adds a column with the specified name to the dataset.

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Parameters

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name – column name.
[index] – column index number between 1 and getMaxColumnIndex().
[type] – the type of column, see JSColumn constants.

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Returns

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Boolean – true if succeeded, else false.

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Sample

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//assuming the variable dataset contains a dataset
var success = dataset.addColumn('columnName',1);

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addHTMLProperty

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void

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addHTMLProperty

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(row, col, name, value)

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Add an HTML property to an HTML tag produced in getAsHTML().

For row and col parameters use:
1 = applies to the container
0 = applies to all
>0 = applies to specific cell

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Parameters

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row – row number
col – column number
name – String property name
value – String property value

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Returns

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void

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Sample

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//adds a container property (to TABLE tag)
dataset.addHTMLProperty(-1,-1,'cellspacing','3');

//adds a row property to all rows (to TR tag)
dataset.addHTMLProperty(0,0,'class','text');

//adds a row property to second row (to TR tag)
dataset.addHTMLProperty(2,0,'class','text');

//adds a column property to all 3rd columns (to TD tag)
dataset.addHTMLProperty(0,3,'class','redcolumn') ;

//adds a specific cell property (to TD tag)
dataset.addHTMLProperty(2,4,'color','blue');

globals.html_field = '<html>'+dataset.getAsHTML()+'</html>';

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addRow

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void

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addRow

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(index, array)

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Add a row to the dataset.

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Parameters

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[index] – index to add row (1-based), add by default as last row
array – row data

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Returns

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void

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Sample

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//assuming the variable dataset contains a dataset
dataset.addRow(new Array(1,2,3,4,5,6,7,7)); //adds a row with 8 columns
dataset.addRow(2, new Array(1,2,3,4,5,6,7,7)); //adds a row with 8 columns after row 2

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createDataSource

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createDataSource

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(name, types)

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Create a data source from the data set with specified name and using specified types.

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Parameters

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name – data source name
[types] – array of types as defined in JSColumn, when null or not supplied types are inferred from the data if possible.

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Returns

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String – String uri reference to the created data source.

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Sample

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ds.addColumn('my_id');
	ds.addColumn('my_label');
	var uri = ds.createDataSource('mydata', [JSColumn.INTEGER, JSColumn.TEXT]);
	var jsform = solutionModel.newForm(fname, uri, null, true, 300, 300);

 var query = 'select customerid, address, city, country  from customers';
 var ds2 = databaseManager.getDataSetByQuery('example_data', query, null, 999);
 var uri2 = ds2.createDataSource('mydata2'); // types are inferred from query result

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getAsHTML

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getAsHTML

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(escape_values, escape_spaces, multi_line_markup, pretty_indent, add_column_names)

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Get the dataset as an html table.

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Parameters

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[escape_values] – if true, replaces illegal HTML characters with corresponding valid escape sequences.
[escape_spaces] – if true, replaces text spaces with non-breaking space tags ( ) and tabs by four non-breaking space tags.
[multi_line_markup] – if true, multiLineMarkup will enforce new lines that are in the text; single new lines will be replaced by <br>, multiple new lines will be replaced by <p>
[pretty_indent] – if true, adds indentation for more readable HTML code.
[add_column_names] – if false, column headers will not be added to the table.

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Returns

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String – String html.

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External links

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Sample

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//gets a dataset based on a query
//useful to limit the number of rows
var maxReturnedRows = 10;
var query = 'select c1,c2,c3 from test_table where start_date = ?';

//to access data by name, do not use '.' or special characters in names or aliases
var args = new Array();
args[0] = order_date //or new Date();
var dataset = databaseManager.getDataSetByQuery(controller.getServerName(),query,args,maxReturnedRows);

// gets a dataset with escape values; escape spaces (lines will not wrap); no multi-line markup; with pretty indentation; shows column names
var htmlTable = dataset.getAsHTML(true, true, false, true, true);

//assigns the dataset to a field and sets the display type to HTML_AREA
//assuming the html_field is a global text variable
globals.html_field = '<html>'+dataset.getAsHTML()+'</html>';

//Note: To display an HTML_AREA field as an HTML page, add HTML tags at the beginning '<html>' and at the end '</html>'.

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getAsText

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getAsText

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(column_separator, row_separator, value_delimiter, add_column_names)

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Get the dataset as formatted text.

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Parameters

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column_separator – any specified column separator; examples: tab '\t'; comma ','; semicolon ';'; space ' ' .
row_separator – the specified row separator; examples: new line '\n'.
value_delimiter – the specified value delimiter; example: double quote '"'.
add_column_names – boolean if true column names will be added as a first row.

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Returns

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String – String formatted text.

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Sample

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//assuming the variable dataset contains a dataset
//you can create csv or tab delimited results
var csv = dataset.getAsText(',','\n','"',true)
var tab = dataset.getAsText('\t','\n','"',true)

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getColumnAsArray

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Object[]

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getColumnAsArray

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(index)

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Get the column data of a dataset as an Array.

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Parameters

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index – index of column (1-based).

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Returns

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Object[] – Object array of data.

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Sample

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//assuming the variable dataset contains a dataset
var dataArray = dataset.getColumnAsArray(1); //puts the contents from the first column of the dataset into an array
//once you have it as an array you can loop through it or feed it to a custom valuelist for example

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getColumnName

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getColumnName

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(index)

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Get a column name based on index.

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Parameters

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index – index of column (1-based).

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Returns

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String – String column name.

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Sample

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//assuming the variable dataset contains a dataset
var firstColumName = dataset.getColumnName(1) //retrieves the first columnname into the variable firstColumName
//using a loop you can get all columnames in an array:
var query = 'select * from customers';
var dataset = databaseManager.getDataSetByQuery(controller.getServerName(), query, null, 100);
var colArray = new Array()
for (var i = 1; i <= dataset.getMaxColumnIndex(); i++)
{
	colArray[i-1] = dataset.getColumnName(i)
	//note the -1, because an array is zero based and dataset is 1 based.
}

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getException

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ServoyException

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getException

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()

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Get the database exception if an error occurred.

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Parameters

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Returns

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ServoyException – ServoyException exception or null when not available.

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Sample

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//assuming the variable dataset contains a dataset
var dbException = dataset.getException();

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getMaxColumnIndex

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getMaxColumnIndex

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()

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Get the number of columns in the dataset.

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Parameters

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Returns

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Number – int number of columns.

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Sample

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//assuming the variable dataset contains a dataset
for (var i = 1; i <= dataset.getMaxColumnIndex(); i++)
{
	colArray[i-1] = dataset.getColumnName(i)
	//have to subtract 1, because an array is zero based and a dataset is 1 based.
}

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getMaxRowIndex

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getMaxRowIndex

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()

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Get the number of rows in the dataset.

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Parameters

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Returns

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Number – int number of rows.

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Sample

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//assuming the variable dataset contains a dataset
var totalRows = dataset.getMaxRowIndex();

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getRowAsArray

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Object[]

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getRowAsArray

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(index)

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Get the row data of a dataset as an Array.

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Parameters

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index – index of row (1-based).

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Returns

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Object[] – Object array of data.

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Sample

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//assuming the variable dataset contains a dataset
var dataArray = dataset.getRowAsArray(1); //puts the contents from the first row of the dataset into an array
//once you have it as an array you can loop through it

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getValue

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Object

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getValue

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(row, col)

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Get the value specified by row and column position from the dataset.

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Parameters

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row – row number, 1-based
col – column number, 1-based

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Returns

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Object – Object value

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Sample

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//assuming the variable dataset contains a dataset
var dataAtRow2Col1 = dataset.getValue(2, 1);

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hadMoreData

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hadMoreData

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()

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Return true if there is more data in the resultset then specified by maxReturnedRows at query time.

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Returns

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Boolean – boolean more data available

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Sample

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var ds = databaseManager.getDataSetByQuery('example_data', 'select order_id from orders', null, 10000)
if (ds.hadMoreData())
{
	// handle large result
}

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removeColumn

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