Results for “exec form”
Small, practical examples. Search by task or narrow things down below.
Include zero counts for missing relationships
SQL: Count the non-null child key after a left join so a missing relationship produces zero.
SQL✓ Tested
Increment a stored value in the database
SQL: An in-database arithmetic update avoids a separate application read-modify-write step.
SQL✓ Tested
Insert a row with named columns
Add a record without relying on implicit column order.
INSERT✓ Tested
Insert only keys absent from a destination
SQL: NOT EXISTS supports a set-based missing-row insert in a single-writer example.
SQL✓ Tested
Join a parent to pre-aggregated totals
SQL: Aggregate the child rows first to produce at most one joined row per parent.
SQL✓ Tested
Join related rows from two tables
SQL: Match a category key to its display label with an explicit join condition.
SQL✓ Tested
Join through a lookup table
SQL: Use explicit aliases and join keys when enriching records through two relationships.
SQL✓ Tested
Keep children while clearing a deleted relationship
SQL: ON DELETE SET NULL requires a nullable foreign-key column.
SQL✓ Tested
Keep parent rows while filtering joined children
SQL: Put a child filter in ON when unmatched parents must remain in the result.
SQL✓ Tested
Keep rows matching a condition
SQL: Use WHERE to select rows with a particular category.
SQL✓ Tested
Keep unmatched rows with LEFT JOIN
Show every product even when stock is missing.
LEFT JOIN✓ Tested
Label rows with CASE
Derive a readable label from a condition.
CASE✓ Tested