Results for “Schema design & transactions”
Small, practical examples. Search by task or narrow things down below.
Calculate a cumulative integer percentage
SQL: Divide a running window sum by the complete total using a unique ordering key.
SQL✓ Tested
Calculate a cumulative integer percentage
SQL Server: Divide a running window sum by the complete total using a unique ordering key.
SQL Server✓ Tested
Calculate a cumulative integer percentage
Postgres: Divide a running window sum by the complete total using a unique ordering key.
Postgres✓ Tested
Calculate a cumulative integer percentage
SQLite: Divide a running window sum by the complete total using a unique ordering key.
SQLite✓ Tested
Calculate a running total
Accumulate values in row order.
window✓ Tested
Calculate a total for each group
Postgres: Group nonmissing categories and calculate separate totals.
Postgres✓ Tested
Calculate a value with SELECT
Postgres: Evaluate a small arithmetic expression on the database server.
Postgres✓ Tested
Calculate each group’s integer percentage of the total
SQL: Multiply before division and protect against a zero denominator.
SQL✓ Tested
Calculate each group’s integer percentage of the total
SQL Server: Multiply before division and protect against a zero denominator.
SQL Server✓ Tested
Calculate each group’s integer percentage of the total
Postgres: Multiply before division and protect against a zero denominator.
Postgres✓ Tested
Calculate each group’s integer percentage of the total
SQLite: Multiply before division and protect against a zero denominator.
SQLite✓ Tested
Calculate each group’s numeric spread
SQL: Subtract MIN from MAX to report the difference between extremes.
SQL✓ Tested