Results for “group_concat”
Small, practical examples. Search by task or narrow things down below.
Filter rows before grouping
SQL Server: WHERE limits the rows contributing to the aggregate; it differs from filtering completed groups with HAVING.
SQL Server✓ Tested
Filter rows before grouping
Postgres: WHERE limits the rows contributing to the aggregate; it differs from filtering completed groups with HAVING.
Postgres✓ Tested
Filter rows before grouping
SQLite: WHERE limits the rows contributing to the aggregate; it differs from filtering completed groups with HAVING.
SQLite✓ Tested
Get the latest row in each group
Select one ordered row per key with DISTINCT ON.
DISTINCT ON✓ Tested
Group by more than one field
SQL: Each distinct combination of grouping fields produces its own row.
SQL✓ Tested
Group by more than one field
SQL Server: Each distinct combination of grouping fields produces its own row.
SQL Server✓ Tested
Group by more than one field
Postgres: Each distinct combination of grouping fields produces its own row.
Postgres✓ Tested
Group by more than one field
SQLite: Each distinct combination of grouping fields produces its own row.
SQLite✓ Tested
Group fields in a struct
Group fields in a struct using a complete Go program with explicit sample inputs.
Go✓ Tested
Group matching values while preserving their order
C++: stable_partition keeps the relative order within both predicate groups.
C++✓ Tested
Group mutually exclusive choices
Use the same name for HTML radio buttons and a fieldset legend.
HTML✓ Tested
Group records by a field
Python: Accumulate related values with defaultdict without checking whether each group exists.
Python✓ Tested