This command adds statistics for the price column in the titles table:
update statistics titles (price)
This command specifies the number of histogram steps for a column:
update statistics titles (price) using 50 values
This command adds a histogram for the titles.pub_id column and generates density values for the prefix subsets pub_id; pub_id, pubdate; and pub_id, pubdate, title_id:
update statistics titles(pub_id, pubdate, title_id)
However, this command does not create a histogram on pubdate and title_id,
since a separate update statistics command is
needed for every column for which a histogram is desired.
Running update statistics with a
table name updates histograms and densities for leading columns
for indexes only; it does not update the statistics for unindexed
columns. To maintain these statistics, run update statistics and specify
the column name, or run update all statistics.
