Coding With Fun
Home Docker Django Node.js Articles Python pip guide FAQ Policy

How to display statistics in dbcc show _ statistics?


Asked by Sariah Berg on Dec 12, 2021 FAQ



DBCC SHOW_STATISTICS displays the header, histogram, and density vector based on data stored in the statistics object. The syntax lets you specify a table or indexed view along with a target index name, statistics name, or column name. This topic describes how to display the statistics and how to understand the displayed results.
Additionally,
You can view already created stats by running the DBCC SHOW_STATISTICS command: The table_name is the name of the table that contains the statistics to display, which can't be an external table. The target is the name of the target index, statistics, or column for which to display statistics information.
Keeping this in consideration, The relationship between indexes and statistics is not symmetric; every index has statistics associated with it, but not all statistics have a corresponding index. DBCC SHOW_STATISTICS shows the actual status for a given statistic on a table or indexed view.
Next,
If the statistics are filtered it shows the number of rows in the table before applying the filter. Otherwise this value is equal to Rows. The DBCC SHOW_STATISTICS density vector measures the distribution of values. It shows one row for each prefix of columns in the statistics.
Also Know,
For a table, the statistics object is created on either an index or a list of table columns. The statistics object includes a header with metadata about the statistics, a histogram with the distribution of values in the first key column of the statistics object, and a density vector to measure cross-column correlation.