Results for “table”
Small, practical examples. Search by task or narrow things down below.
Read values from an inserted row
Use RETURNING to retrieve an automatically assigned row ID.
RETURNING✓ Tested
Read values generated by INSERT
Capture an IDENTITY value with OUTPUT.
OUTPUT✓ Tested
Reference a parent identified by two columns
SQL: A composite foreign key checks the complete referenced key rather than either column independently.
SQL✓ Tested
Reject a negative quantity with CHECK
SQL: Combine NOT NULL and CHECK because an unknown NULL check result is normally accepted.
SQL✓ Tested
Reject duplicate business identifiers
SQL: A UNIQUE constraint protects a business key independently of the primary key.
SQL✓ Tested
Reject NaN and infinite values
PowerShell: Double.IsFinite excludes numeric values unsuitable for ordinary bounded calculations.
PowerShell✓ Tested
Remove collection items that satisfy a condition
Java: Use removeIf on a mutable collection to avoid changing it manually inside a for-each loop.
Java✓ Tested
Remove dependent rows with a declared cascade
SQL: ON DELETE CASCADE removes children when their referenced parent is deleted.
SQL✓ Tested
Remove duplicate result values
SQL: Use DISTINCT when repeated category values are not useful.
SQL✓ Tested
Remove duplicate values while keeping the smallest key
SQL: Identify retained keys in a grouped subquery before deleting other copies.
SQL✓ Tested
Remove surrounding spaces from text
SQL: TRIM removes leading and trailing space characters by default.
SQL✓ Tested
Rename a file in its current directory
PowerShell: Rename-Item changes the name without moving the item to another directory.
PowerShell✓ Tested