Results for “Structured data & serialization”
Small, practical examples. Search by task or narrow things down below.
Number rows within each group
Assign ordered row numbers with a window function.
row_number✓ Tested
Page an ordered result
Skip rows and fetch a bounded page.
OFFSET✓ Tested
Parse JSON into an object
Access a named field in a JSON document.
JSON✓ Tested
Place missing values after known values portably
SQL: A CASE sort key controls NULL placement without relying on engine-specific defaults.
SQL✓ Tested
Place missing values after known values portably
SQL Server: A CASE sort key controls NULL placement without relying on engine-specific defaults.
SQL Server✓ Tested
Place missing values after known values portably
Postgres: A CASE sort key controls NULL placement without relying on engine-specific defaults.
Postgres✓ Tested
Place missing values after known values portably
SQLite: A CASE sort key controls NULL placement without relying on engine-specific defaults.
SQLite✓ Tested
Rank tied scores with competition gaps
SQL: RANK leaves a gap after tied rows, unlike DENSE_RANK.
SQL✓ Tested
Rank tied scores with competition gaps
SQL Server: RANK leaves a gap after tied rows, unlike DENSE_RANK.
SQL Server✓ Tested
Rank tied scores with competition gaps
Postgres: RANK leaves a gap after tied rows, unlike DENSE_RANK.
Postgres✓ Tested
Rank tied scores with competition gaps
SQLite: RANK leaves a gap after tied rows, unlike DENSE_RANK.
SQLite✓ Tested
Rank tied scores without gaps
SQL: DENSE_RANK assigns equal ranks to ties and increments by one for the next distinct score.
SQL✓ Tested