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This is an SQL-standard feature that allows creating columns that are computed from expressions rather than assigned, similar to a view or materialized view but on a column basis. This implements one kind of generated column: stored (computed on write). Another kind, virtual (computed on read), is planned for the future, and some room is left for it. Reviewed-by: Michael Paquier <michael@paquier.xyz> Reviewed-by: Pavel Stehule <pavel.stehule@gmail.com> Discussion: https://www.postgresql.org/message-id/flat/b151f851-4019-bdb1-699e-ebab07d2f40a@2ndquadrant.com |
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| attoptcache.c | ||
| catcache.c | ||
| evtcache.c | ||
| inval.c | ||
| lsyscache.c | ||
| Makefile | ||
| partcache.c | ||
| plancache.c | ||
| relcache.c | ||
| relfilenodemap.c | ||
| relmapper.c | ||
| spccache.c | ||
| syscache.c | ||
| ts_cache.c | ||
| typcache.c | ||