Category: SQL

Run multiple DatabaseBackup jobs with the same queue parameters, and group databases by policy when retention or compression settings differ.

Trace MySQL error 1054 to a misspelled name, wrong alias, unavailable scope, outdated schema, or incorrectly quoted string.

Match multiple pairs of PostgreSQL values safely from Postgres.js by joining against a parameterized VALUES table.

Move finalized MySQL rows into an independently backed-up archive, verify the copy, and delete production data in controlled batches.

Use SQL Server parameters for scalar data values, not table names, keywords, or grammar positions that require identifiers or string literals.

Restore a SQL Server 2022 snapshot backup by mounting its snapshot files, identifying the backup set and database, and using METADATA_ONLY with MOVE.

Load spreadsheet rows into a SQL Server staging table, validate them, and use one explicit transaction to populate parent and child tables safely.

Find each person’s last recorded value on or before two cutoff dates with one grouped pass and indexed joins back to the matching MySQL rows.

Use BACKUP WITH CHECKSUM and RESTORE VERIFYONLY to detect media problems, then perform test restores and DBCC CHECKDB for stronger recovery assurance.

Use a composite primary key when multiple stable columns together are the row identity, and choose a surrogate key when references need a compact stable identifier.