Results for “#table”
Small, practical examples. Search by task or narrow things down below.
Restrict a function parameter to known choices
PowerShell: ValidateSet rejects unsupported values before the function body executes.
PowerShell✓ Tested
Retrieve a file from a stopped container
Docker / Compose: The writable layer remains available for docker cp after exit.
Docker / Compose✓ Tested
Return a collection as one pipeline object
PowerShell: The unary comma prevents the returned array from being enumerated at this boundary.
PowerShell✓ Tested
Return all rows tied for the maximum in a group
SQL: An equality comparison with a grouped maximum retains ties rather than choosing one arbitrary row.
SQL✓ Tested
Return zero for a sum over no rows
SQL: SUM produces NULL for an empty input; COALESCE supplies the desired reporting default.
SQL✓ Tested
Reverse a copy while preserving the source
PowerShell: Clone the array before using Array.Reverse because Reverse mutates its argument.
PowerShell✓ Tested
Roll back a trial update
Group a change in a transaction and undo it.
transaction✓ Tested
Round a decimal with a chosen midpoint rule
PowerShell: Use decimal input and an explicit rounding policy for a reproducible decimal result.
PowerShell✓ Tested
Run a first PowerShell statement
PowerShell: Run a first PowerShell statement using PowerShell 7.
PowerShell✓ Tested
Run a first SELECT query
SQL: Return a literal value without creating a table.
SQL✓ Tested
Run a first SELECT query
SQL Server: Return a literal value without creating a table.
SQL Server✓ Tested
Run a first SELECT query
Postgres: Return a literal value without creating a table.
Postgres✓ Tested