Results for “SQL Server”
Small, practical examples. Search by task or narrow things down below.
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
Require a value with NOT NULL
SQL Server: Declare required fields at the database boundary, not only in application validation.
SQL Server✓ Tested
Require two filtering conditions
SQL Server: Combine category and quantity conditions with AND.
SQL Server✓ Tested
Return all rows tied for the maximum in a group
SQL Server: An equality comparison with a grouped maximum retains ties rather than choosing one arbitrary row.
SQL Server✓ Tested
Return zero for a sum over no rows
SQL Server: SUM produces NULL for an empty input; COALESCE supplies the desired reporting default.
SQL Server✓ Tested
Run a first SELECT query
SQL Server: Return a literal value without creating a table.
SQL Server✓ Tested
Search for a literal LIKE wildcard
SQL Server: Declare an escape character so a percent sign in the pattern is literal.
SQL Server✓ Tested
Select the top row in each group with a tie-breaker
SQL Server: Filter an outer query on ROW_NUMBER because window functions are not evaluated in WHERE.
SQL Server✓ Tested
Select values in an inclusive range
SQL Server: BETWEEN includes both endpoints of the range.
SQL Server✓ Tested
Show a group total beside each detail row
SQL Server: A partitioned aggregate preserves detail rows instead of collapsing them with GROUP BY.
SQL Server✓ Tested
Sort preferred rows ahead of other rows
SQL Server: A CASE ordering key expresses business priority before a stable secondary sort.
SQL Server✓ Tested
Sort the highest quantities first
SQL Server: Specify descending order and a stable tie breaker.
SQL Server✓ Tested