Practical articles about ClickHouse, SQL Server, analytics architecture, performance, migration, and database operations.
Build a continuous restore chain, choose a defensible STOPAT target, and verify business data before reopening a recovered SQL Server database.
Read articleRow and page compression can reduce storage and I/O, but add CPU work and do not benefit every table equally. The decision depends on data shape and workload.
Read articleHandle NULL explicitly, encode valid row states, and understand what CHECK constraints can enforce before relying on them for data integrity.
Read articleBuild reliable running balances and latest-row queries by understanding partitions, tied sort values, explicit window frames, and filter placement.
Read articleUnderstand which backup changes the differential base, why a full backup does not break the log chain, and how to verify restore dependencies.
Read articlePartitioning is often presented as an automatic performance feature. Its strongest benefits usually involve lifecycle, sliding-window loads, archival, and maintenance boundaries.
Read articleDistinguish waiting grants, oversized reservations, and spills, then reduce query memory demand without trading one SQL Server bottleneck for another.
Read articleDiagnose login-to-user SID mismatches, remap the intended identity without dropping permissions, and validate application access after a restore.
Read articleDynamic SQL is useful for optional filters and variable query shapes, but string concatenation introduces injection risk, quoting defects, poor plan reuse, and difficult troubleshooting.
Read articleVerify IFI on Windows SQL Server, separate data-file and log behavior, and measure growth and restore impact without assuming zero latency.
Read articlePreserve the certificates and private keys needed for encrypted-backup recovery, and test restoration on an instance that does not already have them.
Read articleFind disabled or untrusted foreign keys, understand child-table indexing, and restore integrity without confusing enforcement with validation.
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