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https://dev.mysql.com/doc/refman/5.7/en/out-of-memory.html
Is it reasonable that it should return so many rows? If not, correct the query and try again. This causes it to use the mysql_use_result() C API function to retrieve the result set, which places less of a load on the client (but more on the server).
https://dev.mysql.com/doc/refman/5.7/en/packet-too-large.html
You can increase this if the server needs to handle big queries (for example, if you are working with big BLOB columns). A communication packet is a single SQL statement sent to the MySQL server, a single row that is sent to the client, or a binary ...
https://dev.mysql.com/doc/refman/5.7/en/partitioning-list.html
List partitioning in MySQL is similar to range partitioning in many ways. As in partitioning by RANGE, each partition must be explicitly defined. The chief difference between the two types of partitioning is that, in list partitioning, each ...
https://dev.mysql.com/doc/refman/5.7/en/performance-schema-processlist-table.html
This implementation queries active thread data from the Performance Schema rather than the thread manager and does not require a mutex. Note The processlist table is automatically created in the Performance Schema for new installations of MySQL ...
https://dev.mysql.com/doc/refman/5.7/en/performance-schema-statement-digests.html
For example, table columns that show wait times, lock times, or index use may highlight types of queries that are inefficient. The MySQL server is capable of maintaining statement digest information. The digesting process converts each SQL ...
https://dev.mysql.com/doc/refman/5.7/en/replace.html
REPLACE [LOW_PRIORITY | DELAYED] [INTO] tbl_name [PARTITION (partition_name [, partition_name] ...)] [(col_name [, col_name] ...)] {VALUES | VALUE} (value_list) [, (value_list)] ... REPLACE [LOW_PRIORITY | DELAYED] [INTO] tbl_name [PARTITION ...
https://dev.mysql.com/doc/refman/5.7/en/select-into.html
INTO form of SELECT enables a query result to be stored in variables or written to a file: SELECT ... Column and line terminators can be specified to produce a specific output format. INTO DUMPFILE writes a single row to a file without any ...
https://dev.mysql.com/doc/refman/5.7/en/string-comparison-functions.html
Note Aggregate queries involving NOT LIKE comparisons with columns containing NULL may yield unexpected results. The same is true for aggregate queries involving NULL and comparisons using NOT RLIKE or NOT REGEXP. Table 12.13 String Comparison ...
https://dev.mysql.com/doc/refman/5.7/en/subqueries.html
We say that the subquery is nested within the outer query, and in fact it is possible to nest subqueries within other subqueries, to a considerable depth. The main advantages of subqueries are: They allow queries that are structured so that it is ...
https://dev.mysql.com/doc/refman/5.7/en/trigger-syntax.html
(ROLLBACK to SAVEPOINT is permitted because it does not end a transaction.). To create a trigger or drop a trigger, use the CREATE TRIGGER or DROP TRIGGER statement, described in Section 13.1.20, “CREATE TRIGGER Statement”, and Section 13.1.31, ...