MDEV-8320 Allow index usage for DATE(col) <=> const and YEAR <=> const

Rewrite datetime comparison conditions into sargeable. For example, YEAR(col) <= val -> col <= YEAR_END(val) YEAR(col) < val -> col < YEAR_START(val) YEAR(col) >= val -> col >= YEAR_START(val) YEAR(col) > val -> col > YEAR_END(val) YEAR(col) = val -> col BETWEEN YEAR_START(val) AND YEAR_END(val) Do the same with DATE(col), for example: DATE(col) <= val -> col <= DAY_END(val) After such a rewrite index lookup on column "col" can be employed
MariaDB · Apr 25, 2023 · f0b665f · f0b665f
1 parent 54c1127
commit f0b665f
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diff --git a/libmysqld/CMakeLists.txt b/libmysqld/CMakeLists.txt
@@ -68,7 +68,9 @@ SET(SQL_EMBEDDED_SOURCES emb_qcache.cc libmysqld.c lib_sql.cc
            ../sql/key.cc ../sql/lock.cc ../sql/log.cc 
            ../sql/log_event.cc ../sql/log_event_server.cc 
            ../sql/mf_iocache.cc ../sql/my_decimal.cc 
-           ../sql/net_serv.cc ../sql/opt_range.cc ../sql/opt_sum.cc 
+           ../sql/net_serv.cc ../sql/opt_range.cc
+           ../sql/opt_rewrite_date_cmp.cc
+           ../sql/opt_sum.cc
            ../sql/parse_file.cc ../sql/procedure.cc ../sql/protocol.cc 
            ../sql/records.cc ../sql/repl_failsafe.cc ../sql/rpl_filter.cc
            ../sql/rpl_record.cc ../sql/des_key_file.cc