Results for “os”
Small, practical examples. Search by task or narrow things down below.
Read an image’s default command
Docker / Compose: Config.Cmd contains the command arguments stored in the image.
Docker / Compose✓ Tested
Read characters without confusing EOF with a byte
C: Store fgetc in int so every unsigned-char value remains distinguishable from EOF.
C✓ Tested
Read named columns from a table
Postgres: Choose the columns needed and request a deterministic row order.
Postgres✓ Tested
Read output from a completed container
Retrieve the stdout captured by Docker.
logs✓ Tested
Read the last value of the complete partition
Postgres: Specify an unbounded-following frame so LAST_VALUE does not stop at the current row.
Postgres✓ Tested
Read the next row’s value
Postgres: LEAD reads a later ordered row without a self join and supports a fallback at the end.
Postgres✓ Tested
Read the smallest and largest values
Postgres: Use MIN and MAX without sorting and fetching every row.
Postgres✓ Tested
Read updated base-table values through a view
Postgres: An ordinary view reflects later changes to its underlying data.
Postgres✓ Tested
Reference a parent identified by two columns
SQL: A composite foreign key checks the complete referenced key rather than either column independently.
SQL✓ Tested
Reference a parent identified by two columns
SQL Server: A composite foreign key checks the complete referenced key rather than either column independently.
SQL Server✓ Tested
Reference a parent identified by two columns
Postgres: A composite foreign key checks the complete referenced key rather than either column independently.
Postgres✓ Tested
Reference a parent identified by two columns
SQLite: A composite foreign key checks the complete referenced key rather than either column independently.
SQLite✓ Tested