Results for “ff-only”
Small, practical examples. Search by task or narrow things down below.
Create a reusable one-to-many lookup
C#: ToLookup groups values by key and returns an empty sequence for an unknown key.
C#✓ Tested
Create a STRICT table
Require values compatible with declared column types.
STRICT✓ Tested
Create a table and insert its first row
SQL: Define column types and a primary key, then insert one row using an explicit column list.
SQL✓ Tested
Create a table and insert its first row
SQL Server: Define column types and a primary key, then insert one row using an explicit column list.
SQL Server✓ Tested
Create a table and insert its first row
Postgres: Define column types and a primary key, then insert one row using an explicit column list.
Postgres✓ Tested
Create a table and insert its first row
SQLite: Define column types and a primary key, then insert one row using an explicit column list.
SQLite✓ Tested
Create an index for an equality filter
SQL: A nonunique index can support lookups on a frequently filtered column.
SQL✓ Tested
Create an index for an equality filter
SQL Server: A nonunique index can support lookups on a frequently filtered column.
SQL Server✓ Tested
Create an index for an equality filter
Postgres: A nonunique index can support lookups on a frequently filtered column.
Postgres✓ Tested
Create an index for an equality filter
SQLite: A nonunique index can support lookups on a frequently filtered column.
SQLite✓ Tested
Create an index matching filter and ordering columns
SQL: Place the equality-filter column before the ordering column in this composite index.
SQL✓ Tested
Create an index matching filter and ordering columns
SQL Server: Place the equality-filter column before the ordering column in this composite index.
SQL Server✓ Tested