Tag archive
Commands grouped around the same concept, pattern, or recurring problem.
Pull out a specific token from a dot- or delimiter-separated string using `SPLIT_PART` (PostgreSQL), `SUBSTRING_INDEX` (MySQL/MariaDB), `PARSENAME` (SQL Server), or nested `SUBSTR`/`INSTR` (SQLite).
Expand a comma-separated or delimited string into one row per element, turning a single cell into a proper set of rows.