Results for “Relationships & missing data”
Small, practical examples. Search by task or narrow things down below.
Sum a row and its immediate predecessor
Postgres: A ROWS frame counts physical ordered rows rather than all peers with the same sort value.
Postgres✓ Tested
Sum a row and its immediate predecessor
SQLite: A ROWS frame counts physical ordered rows rather than all peers with the same sort value.
SQLite✓ Tested
Sum integer values
Sum a C# sequence using LINQ.
C#✓ Tested
Sum values per category
Calculate a grouped total.
SUM✓ Tested
Swap owned buffers by swapping their pointers
C: Pointer swaps avoid copying the underlying data.
C✓ Tested
Turn a condition into a result label
SQL: Use CASE to describe stock availability for each row.
SQL✓ Tested
Turn a condition into a result label
SQL Server: Use CASE to describe stock availability for each row.
SQL Server✓ Tested
Turn JSON into typed rows
Project JSON array items into SQL columns.
OPENJSON✓ Tested
Turn known group values into columns
SQL: Conditional aggregation gives a portable pivot when the category set is known.
SQL✓ Tested
Turn known group values into columns
SQL Server: Conditional aggregation gives a portable pivot when the category set is known.
SQL Server✓ Tested
Turn known group values into columns
Postgres: Conditional aggregation gives a portable pivot when the category set is known.
Postgres✓ Tested
Turn known group values into columns
SQLite: Conditional aggregation gives a portable pivot when the category set is known.
SQLite✓ Tested