Results for “cut”
Small, practical examples. Search by task or narrow things down below.
Read the smallest and largest values
SQL: Use MIN and MAX without sorting and fetching every row.
SQL✓ Tested
Read updated base-table values through a view
SQL: An ordinary view reflects later changes to its underlying data.
SQL✓ 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
Remove an indexed element and compact the array
Bash Scripts: Unsetting an element leaves a gap; reassigning the values creates consecutive indices.
Bash Scripts✓ 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
Repeat the first ordered value beside each row
SQL: FIRST_VALUE reads the first value in the current window frame.
SQL✓ Tested
Replace a literal substring
SQL: REPLACE performs a literal replacement rather than a regular-expression substitution.
SQL✓ Tested