![]() Example use cases for the DBSTAT virtual table include the sqlite3analyzer. There are two ways to obtain this information: Using system tables with Transact-SQL (T-SQL) Querying the 'Tables' folder on 'Object Explorer Details' panel We will demonstrate how these features can be used. I therefore suspect that they have no intention to add more fuel to the fire, when they will eventually try to fix the root cause. Overview The DBSTAT virtual table is a read-only eponymous virtual tablethat returns information about the amount of disk space used to store the content of an SQLite database. ![]() One might ask why not deviate further from the standard and allow a 4-row result? It's just a guess, but I suspect that the intention is to fix the first deviation eventually (probably via a setting similar to MySQL). Therefore, one row is randomly picked, say john, 3 This is done by running the per-table row count as a subquery called pertablecountsubquery and performing a SUM across all the row counts that are the output of that subquery. Since an aggregate function (in this case COUNT) is supposed to aggregate per group, we should get 1 row in the result (we only have 1 group, the group for the empty set). The query below simply sums the row counts of the individual tables from the previous step to get a total row count across all the tables. Null is not taken into consideration by count, so we end up with: jack, 3 Make sure the table used in the FROM clause should have at least one record otherwise youd get no results. ![]() This means that your aggregate function applies to all rows in the result set, i.e. You can think of your query as if it looks like: SELECT first_name, COUNT(first_name) To get the number of rows in a single table we can use the COUNT() or COUNTBIG() functions, e.g. SQLite refers to first_name outside of the aggregate as a "bare" column, see section 2.5. SQLite does not adhere to the standard in this regard. ![]()
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