Results for “missing”
Small, practical examples. Search by task or narrow things down below.
Pair employees with their managers
SQL: Alias a table twice to represent two different roles in one relationship.
SQL✓ Tested
Pair employees with their managers
SQL Server: Alias a table twice to represent two different roles in one relationship.
SQL Server✓ Tested
Pair employees with their managers
Postgres: Alias a table twice to represent two different roles in one relationship.
Postgres✓ Tested
Pair employees with their managers
SQLite: Alias a table twice to represent two different roles in one relationship.
SQLite✓ Tested
Add a forgotten file to the latest unpublished commit
Git: Stage the missing file before amending without changing the message.
Git✓ Tested
Calculate a total for each group
SQL: Group nonmissing categories and calculate separate totals.
SQL✓ Tested
Calculate a total for each group
SQL Server: Group nonmissing categories and calculate separate totals.
SQL Server✓ Tested
Calculate a total for each group
Postgres: Group nonmissing categories and calculate separate totals.
Postgres✓ Tested
Calculate a total for each group
SQLite: Group nonmissing categories and calculate separate totals.
SQLite✓ Tested
Check for a hashtable key before reading it
PowerShell: ContainsKey distinguishes a missing key from a key whose value happens to be null.
PowerShell✓ Tested
Check whether a command can be resolved
PowerShell: Get-Command with a local error override supports an expected missing-command lookup.
PowerShell✓ Tested
Check whether a variable exists under nounset
Bash Scripts: The plus expansion distinguishes an unset variable without reading its missing value.
Bash Scripts✓ Tested