3.3 Logical Operators 3.4 Assignment Operators 4 Control Flow Functions 5 String Function5.1 String Comparison Functions 5.2 Regular Expressions 5.3 Character Set and Collation of Function Results 6 Numeric Functions and Operators 6.1 Arithmetic Operators ...
https://dev.mysql.com/doc/refman/8.0/en/glossary.html#glos_acid MySQL Glossary These terms are commonly used in information about the MySQL database s
are_all_blobrefs_valid() : lob::BtrContextare_dynamic_parameters_allowed() : Sql_cmd, Sql_cmd_create_table, Sql_cmd_dmlArea() : gis::Areaarg : binlog_func_st, ib_alloc_t, IO_CACHE, Item_default_value, Item_insert_value, pars_user_func_t, task_env...
It is not. If you compare Mike’s queries with mine, his are often shorter. On the other hand, queries to maintain the nested set model in the event of adding/deleting a node, have to be multi-statement ones and must use concurrency control (you can see them in t...
It does not. --- In any case, the very last query can not be correct, it contains 3 nested aggregates for 2 queries. There is no way to distribute them in any meaningful way. But again the expected behaviour depends on the above. How to repeat: drop table if exists t1; create ...
| -> Aggregate: count(EmailSent.EmailAddress) (cost=2061339.87 rows=1) (actual time=3950.661..3950.662 rows=1 loops=1) -> Nested loop inner join (cost=1958166.87 rows=1031730) (actual time=0.513..3939.475 rows=114611 loops=1) -> Index lookup on EmailSent using MailBatchId (MailBatchId=...
Important: After such tables are upgraded, they cannot be used any longer with MySQL 5.1 unless they are first downgraded again usingALTER TABLE ... PARTITION BY KEY ALGORITHM=1 (...)on a MySQL server supporting this option. This syntax is not backward compatible, and causes errors in older...
The conditions that qualify aUNIONfor evaluation without a temporary table are: The union isUNION ALL, notUNIONorUNION DISTINCT. There is no globalORDER BYclause. The union is not the top-level query block of an{INSERT | REPLACE} ... SELECT ...statement. ...
2137: fix nested subquery filter in exists We do not explore the children of subquery when attempting to decorrelate filters for exists queries; we now do this through the use of subquery.Correlated(). We should also avoid using uncacheable subqueries as keys for IndexLookups. fixes dolthub/...
* An aggregate function in some nested queries could cause a server exit. (Bug #25303711) * Virtual generated column expressions that used any of the BIN_TO_UUID(), CONV(), or HEX() functions could cause problems if the connection character set was changed. In this context, the table ...