Read this SQL tutorial to learn when to use SELECT, JOIN, subselects and UNION to access multiple tables with a single statement. It’s sometimes difficult to know which SQL syntax to use when ...

I have a table that logs a record containing a userid, a fileid and a date, one record inserted every time that file is downloaded.<BR><BR>I want to get the top 10 downloads by count for a given date ...

You can count and report the total number of rows that have the same value for one or more columns. You can use the automatic group by feature to group the values according to their columns. The ...

SELECT COUNT(*) FROM v0 WHERE (CURRENT_DATE, c0) != (CAST(NULL AS TEXT), '0'); SELECT SUM(CASE WHEN (CURRENT_DATE, c0) != (CAST(NULL AS TEXT), '0') THEN 1 ELSE 0 END) FROM v0; The two SQL queries have ...