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Small, practical examples. Search by task or narrow things down below.

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GitMerging & replaying changes

Replay an unpublished branch on a newer base

Git: Rebase updates the base of local feature commits when their changes do not conflict.

Git✓ Tested
SQLSubqueries & ranked selection

Report duplicate business values and their frequency

SQL: Group by a candidate business key and retain only groups with multiple rows.

SQL✓ Tested
SQLConstraints & defaults

Require a value with NOT NULL

SQL: Declare required fields at the database boundary, not only in application validation.

SQL✓ Tested
SQLGetting Started

Require two filtering conditions

SQL: Combine category and quantity conditions with AND.

SQL✓ Tested
GitMerging & replaying changes

Resolve a merge by writing the intended final file

Git: After a conflict, edit the result, stage it, and finish the merge commit.

Git✓ Tested
GitRestoring & revising local work

Restore a file’s content from an older commit

Git: Specify a source revision when the desired contents are not in the current index.

Git✓ Tested
GitStashing selected work

Restore the index state recorded in a stash

Git: Apply with index restores which changes were staged as well as their file contents.

Git✓ Tested
SQLSubqueries & ranked selection

Return all rows tied for the maximum in a group

SQL: An equality comparison with a grouped maximum retains ties rather than choosing one arbitrary row.

SQL✓ Tested
SQL ServerSubqueries & ranked selection

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
SQLiteSubqueries & ranked selection

Return all rows tied for the maximum in a group

SQLite: An equality comparison with a grouped maximum retains ties rather than choosing one arbitrary row.

SQLite✓ Tested
PostgresRows & writes

Return an inserted row

Read generated data directly from INSERT.

RETURNING✓ Tested
GitGetting Started

Return to the original branch

Git: Return to the original branch inside the disposable repository created by the input setup.

Git✓ Tested