Results for “Context & shared state”
Small, practical examples. Search by task or narrow things down below.
Sum a row and its immediate predecessor
SQL Server: A ROWS frame counts physical ordered rows rather than all peers with the same sort value.
SQL Server✓ Tested
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 values per category
Calculate a grouped total.
SUM✓ Tested
Supply a title and URL for link previews
HTML: Open Graph metadata describes a shared page without changing its visible content.
HTML✓ Tested
Test missing values with IS NULL
Find rows where an optional value is absent.
IS NULL✓ Tested
Treat an empty trimmed value as missing
SQL: NULLIF converts an empty string to NULL before a fallback is applied.
SQL✓ Tested
Treat an empty trimmed value as missing
SQL Server: NULLIF converts an empty string to NULL before a fallback is applied.
SQL Server✓ Tested
Treat an empty trimmed value as missing
Postgres: NULLIF converts an empty string to NULL before a fallback is applied.
Postgres✓ Tested
Treat an empty trimmed value as missing
SQLite: NULLIF converts an empty string to NULL before a fallback is applied.
SQLite✓ 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