Results for “Relationships & missing data”
Small, practical examples. Search by task or narrow things down below.
Calculate a value with SELECT
Postgres: Evaluate a small arithmetic expression on the database server.
Postgres✓ Tested
Calculate a value with SELECT
SQLite: Evaluate a small arithmetic expression on the database server.
SQLite✓ 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
Calculate each group’s numeric spread
SQL Server: Subtract MIN from MAX to report the difference between extremes.
SQL Server✓ Tested
Calculate each group’s numeric spread
Postgres: Subtract MIN from MAX to report the difference between extremes.
Postgres✓ Tested
Calculate each group’s numeric spread
SQLite: Subtract MIN from MAX to report the difference between extremes.
SQLite✓ Tested
Capture standard output and standard error separately
Bash Scripts: Use distinct redirections when diagnostic text should not be mixed with data.
Bash Scripts✓ Tested
Catch a T-SQL error
Handle an expected conversion error in TRY/CATCH.
TRY CATCH✓ Tested