Results for “CMD”
Small, practical examples. Search by task or narrow things down below.
Replace a literal substring
SQL Server: REPLACE performs a literal replacement rather than a regular-expression substitution.
SQL Server✓ Tested
Replace a literal word in text
PowerShell: Replace a literal word in text using PowerShell 7.
PowerShell✓ Tested
Replace repeated whitespace
Normalize runs of whitespace to one space.
regex✓ Tested
Report duplicate business values and their frequency
SQL Server: Group by a candidate business key and retain only groups with multiple rows.
SQL Server✓ Tested
Require a value with NOT NULL
SQL Server: Declare required fields at the database boundary, not only in application validation.
SQL Server✓ Tested
Require two filtering conditions
SQL Server: Combine category and quantity conditions with AND.
SQL Server✓ Tested
Restore an environment value after temporary use
PowerShell: Use finally so temporary process configuration does not leak to subsequent work; remove the entry when it was originally absent.
PowerShell✓ Tested
Restore the working location after an operation
PowerShell: Push-Location and Pop-Location manage a directory stack; finally ensures restoration.
PowerShell✓ Tested
Restrict a function parameter to known choices
PowerShell: ValidateSet rejects unsupported values before the function body executes.
PowerShell✓ 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 Server: An equality comparison with a grouped maximum retains ties rather than choosing one arbitrary row.
SQL Server✓ Tested
Return zero for a sum over no rows
SQL Server: SUM produces NULL for an empty input; COALESCE supplies the desired reporting default.
SQL Server✓ Tested