Results for “let”
Small, practical examples. Search by task or narrow things down below.
Replace literal text
Replace literal text using a complete Go program with explicit sample inputs.
Go✓ Tested
Replace NULL in a result
Choose a fallback for a missing value.
COALESCE✓ Tested
Replace repeated whitespace
Normalize runs of whitespace to one space.
regex✓ Tested
Report duplicate business values and their frequency
SQL: Group by a candidate business key and retain only groups with multiple rows.
SQL✓ Tested
Report duplicate business values and their frequency
SQL Server: Group by a candidate business key and retain only groups with multiple rows.
SQL Server✓ Tested
Report duplicate business values and their frequency
Postgres: Group by a candidate business key and retain only groups with multiple rows.
Postgres✓ Tested
Report duplicate business values and their frequency
SQLite: Group by a candidate business key and retain only groups with multiple rows.
SQLite✓ Tested
Represent a set with empty structs
Represent a set with empty structs using a complete Go program with explicit sample inputs.
Go✓ Tested
Require a form field
HTML: Learn how to require a form field in a complete browser example.
HTML✓ Tested
Require a value with NOT NULL
SQL: Declare required fields at the database boundary, not only in application validation.
SQL✓ Tested
Require a value with NOT NULL
SQL Server: Declare required fields at the database boundary, not only in application validation.
SQL Server✓ Tested
Require a value with NOT NULL
Postgres: Declare required fields at the database boundary, not only in application validation.
Postgres✓ Tested