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https://dev.mysql.com/doc/refman/5.7/en/mysqlbinlog-row-events.html
# at 218 #080828 15:03:08 server id 1 end_log_pos 258 Write_rows: table id 17 flags: STMT_END_F BINLOG ' fAS3SBMBAAAALAAAANoAAAAAABEAAAAAAAAABHRlc3QAAXQAAwMPCgIUAAQ= fAS3SBcBAAAAKAAAAAIBAAAQABEAAAAAAAEAA//8AQAAAAVhcHBsZQ== '/*!*/; ### INSERT INTO ...
https://dev.mysql.com/doc/refman/5.7/en/optimize-table.html
Use OPTIMIZE TABLE in these cases, depending on the type of table: After doing substantial insert, update, or delete operations on an InnoDB table that has its own .ibd file because it was created with the innodb_file_per_table option enabled. After ...OPTIMIZE TABLE reorganizes the physical storage of table data and associated index data, to reduce storage space and improve I/O efficiency when accessing the ...
https://dev.mysql.com/doc/refman/5.7/en/optimizer-hints.html
The parser recognizes optimizer hint comments after the initial keyword of SELECT, UPDATE, INSERT, REPLACE, and DELETE statements. One means of control over optimizer strategies is to set the optimizer_switch system variable (see Section 8.9.2, ...
https://dev.mysql.com/doc/refman/5.7/en/optimizing-innodb-diskio.html
(Measure at a time when the server is not doing bulk inserts; it is normal during bulk inserts for the modified pages percentage to rise significantly.) Log sequence number - Last checkpoint is at less than 7/8 or ideally less than 6/8 of the total ... If you follow best practices for database design and tuning techniques for SQL operations, but your database is still slow due to heavy disk I/O activity, consider these disk I/O ...
https://dev.mysql.com/doc/refman/5.7/en/precision-math-rounding.html
This section discusses precision math rounding for the ROUND() function and for inserts into columns with exact-value types (DECIMAL and integer). The ROUND() function rounds differently depending on whether its argument is exact or approximate: ...
https://dev.mysql.com/doc/refman/5.7/en/replication-features-variables.html
sql_mode is also replicated except for the NO_DIR_IN_CREATE mode; the replica always preserves its own value for NO_DIR_IN_CREATE, regardless of changes to it on the source. However, when mysqlbinlog parses a SET @@sql_mode = mode statement, the ...
https://dev.mysql.com/doc/refman/5.7/en/session-state-tracking.html
A client can enable these trackers to receive notification of changes to its session state. Uses for Session State Trackers Available Session State Trackers C API Session State Tracker Support Test Suite Session State Tracker Support Uses for ...
https://dev.mysql.com/doc/refman/5.7/en/show-warnings.html
Warnings are generated for DML statements such as INSERT, UPDATE, and LOAD DATA as well as DDL statements such as CREATE TABLE and ALTER TABLE. Here is a simple example that shows data-conversion warnings for INSERT. With strict mode enabled, the ...
https://dev.mysql.com/doc/refman/5.7/en/ansi-diff-select-into-table.html
For example: INSERT INTO tbl_temp2 (fld_id) SELECT tbl_temp1.fld_order_id FROM tbl_temp1 WHERE tbl_temp1.fld_order_id > 100; Alternatively, you can use SELECT ... The same syntax can also be used inside stored routines using cursors and local ...
https://dev.mysql.com/doc/refman/5.7/en/bit-value-literals.html
A leading 0b is case-sensitive and cannot be written as 0B. In numeric contexts, MySQL treats a bit literal like an integer. To ensure numeric treatment of a bit literal, use it in numeric context. For example, a bit literal assigned to a ...