Results for “active low”
Small, practical examples. Search by task or narrow things down below.
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
Add semantic page landmarks
Identify the header, navigation, main content and footer with semantic HTML.
HTML✓ Tested
Add values across several rows
SQL: Use SUM to calculate a total quantity.
SQL✓ Tested
Add values across several rows
SQL Server: Use SUM to calculate a total quantity.
SQL Server✓ Tested
Add values across several rows
Postgres: Use SUM to calculate a total quantity.
Postgres✓ Tested
Add values across several rows
SQLite: Use SUM to calculate a total quantity.
SQLite✓ Tested
Append a line to a file
Add a new line to the end of a text file without replacing its existing contents. Append mode also creates the file if it does not exist.
file✓ Tested
Apply a default when an insert omits a column
SQL: A default supplies an omitted value; an explicit NULL still follows the column’s nullability rules.
SQL✓ Tested
Apply a default when an insert omits a column
SQL Server: A default supplies an omitted value; an explicit NULL still follows the column’s nullability rules.
SQL Server✓ Tested
Apply a default when an insert omits a column
Postgres: A default supplies an omitted value; an explicit NULL still follows the column’s nullability rules.
Postgres✓ Tested