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A dash after a number no longer breaks default numerical sorting of a column. Therefore, a range (30–40) now works. A plus sign after a number breaks default numerical sorting if it is in one of the first 5 cells in a column. A plus sign in an otherwise empty cell breaks default numerical sorting of a column.
Help:Sortable tables#Sorting buttons in a separate row; Each row must have the same number of cells as the other rows, so that the number of columns in the table remains consistent. With colspan and rowspan cells can span several columns or rows; (see § Mélange, below)
If a table is created in Visual Editor, the dialog includes a checkbox to "Make table sortable". If you check this box, then a reader can sort the table by any column, by clicking on the header cell for that column. Existing tables, or tables created in wikitext can be made sortable by adding the wikitable sortable class to the top of the table:
Adding data-sort-type="number" to the relevant column header solves many numerical sorting problems. See Help:Sortable tables § Forcing a column to have a particular data type . This template can be useful when building a sortable table in which a column contains both numbers and text.
To use column-major order in a row-major environment, or vice versa, for whatever reason, one workaround is to assign non-conventional roles to the indexes (using the first index for the column and the second index for the row), and another is to bypass language syntax by explicitly computing positions in a one-dimensional array.
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This category contains templates used in table rows of sortable tables, often to provide a hidden sort key (marked with the data-sort-value attribute), and/or to force a particular sort mode. The pages listed in this category are templates .
In a database, a table is a collection of related data organized in table format; consisting of columns and rows.. In relational databases, and flat file databases, a table is a set of data elements (values) using a model of vertical columns (identifiable by name) and horizontal rows, the cell being the unit where a row and column intersect. [1]