Results for “Context & shared state”
Small, practical examples. Search by task or narrow things down below.
Repeat the first ordered value beside each row
SQL Server: FIRST_VALUE reads the first value in the current window frame.
SQL Server✓ Tested
Repeat the first ordered value beside each row
Postgres: FIRST_VALUE reads the first value in the current window frame.
Postgres✓ Tested
Repeat the first ordered value beside each row
SQLite: FIRST_VALUE reads the first value in the current window frame.
SQLite✓ Tested
Replace a literal substring
SQL: REPLACE performs a literal replacement rather than a regular-expression substitution.
SQL✓ Tested
Replace a literal substring
SQL Server: REPLACE performs a literal replacement rather than a regular-expression substitution.
SQL Server✓ Tested
Replace a literal substring
Postgres: REPLACE performs a literal replacement rather than a regular-expression substitution.
Postgres✓ Tested
Replace a literal substring
SQLite: REPLACE performs a literal replacement rather than a regular-expression substitution.
SQLite✓ Tested
Replace NULL in a result
Choose a fallback for a missing value.
COALESCE✓ 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