Results for “head”
Small, practical examples. Search by task or narrow things down below.
Show the first lines of a file
Read only the first three lines of a text file, useful for checking a header or previewing a large log.
head✓ Tested
Accept either of two conditions
SQL: Use OR to keep matching names or out-of-stock rows.
SQL✓ Tested
Accept either of two conditions
SQL Server: Use OR to keep matching names or out-of-stock rows.
SQL Server✓ Tested
Accept either of two conditions
Postgres: Use OR to keep matching names or out-of-stock rows.
Postgres✓ Tested
Accept either of two conditions
SQLite: Use OR to keep matching names or out-of-stock rows.
SQLite✓ Tested
Add an interval to a date
Perform calendar arithmetic with an interval literal.
INTERVAL✓ Tested
Add an optional field to an existing table
SQL: A nullable column permits existing rows to remain valid while data is filled later.
SQL✓ Tested
Add an optional field to an existing table
SQL Server: A nullable column permits existing rows to remain valid while data is filled later.
SQL Server✓ Tested
Add an optional field to an existing table
Postgres: A nullable column permits existing rows to remain valid while data is filled later.
Postgres✓ Tested
Add an optional field to an existing table
SQLite: A nullable column permits existing rows to remain valid while data is filled later.
SQLite✓ Tested
Add days to a date
Use DATEADD for date arithmetic.
DATEADD✓ Tested
Add days to a date
Use a date modifier for calendar arithmetic.
date✓ Tested