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https://dev.mysql.com/doc/internals/en/myisam-concurrent-insert.html
To support concurrent inserts, every statement starts with copying MYISAM_SHARE::state.state to MI_INFO::save_state and lets MI_INFO::state point to the copy. However, with concurrent inserts, the trick is that read locks are allowed to proceed ...
https://dev.mysql.com/doc/ndbapi/en/ndb-nodejs-examples-insert.html
# FILE: insert.js var nosql = require('..'); var lib = require('./lib.js'); var adapter = 'ndb'; global.mysql_conn_properties = {}; var user_args = []; // *** program starts here *** // analyze command line var usageMessage = "Usage: node insert ...
https://dev.mysql.com/doc/refman/8.4/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/8.4/en/midpoint-insertion.html
When using the midpoint insertion strategy, the LRU chain is divided into two parts: a hot sublist and a warm sublist. By default, the key cache management system uses a simple LRU strategy for choosing key cache blocks to be evicted, but it also ...The division point between two parts is not fixed, but the key cache management system takes care that the warm part is not “too short,” always containing at least key_cache_division_limit percent of the key cache ...
https://dev.mysql.com/doc/refman/8.4/en/select-into.html
INTO form of SELECT enables a query result to be stored in variables or written to a file: SELECT ... INTO DUMPFILE writes a single row to a file without any formatting. A given SELECT statement can contain at most one INTO clause, although as shown ...Column and line terminators can be specified to produce a specific output ...
https://dev.mysql.com/doc/internals/en/support-for-insert.html
Once you have read support in your storage engine, the next feature to implement is support for INSERT statements. With INSERT support in place, your storage engine can handle WORM (write once, read many) applications such as logging and archiving ...The process for writing a row is the opposite of the process for reading one: take the data from the MySQL internal row format and write it to the data ...
https://dev.mysql.com/doc/internals/en/bulk-insert.html
Instead of writing each key value to B-tree (that is, to the key cache, although the bulk insert code doesn't know about the key cache), we store keys in a balanced binary (red-black) tree, in memory. But since the key stream coming from the binary ...When this tree reaches its memory limit, we write all keys to disk (to key cache, that ...
https://dev.mysql.com/doc/ndbapi/en/ndb-examples-basic-insert.html
You can also find the source code for this example in the file storage/ndb/ndbapi-examples/ndbapi_basic/ndbapi_basic_insert.cpp.
https://dev.mysql.com/doc/refman/8.4/en/innodb-auto-increment-handling.html
An example follows, where c1 is an AUTO_INCREMENT column of table t1: INSERT INTO t1 (c1,c2) VALUES (1,'a'), (NULL,'b'), (5,'c'), (NULL,'d'); Another type of “mixed-mode insert” is INSERT ... In this lock mode, all “INSERT-like” statements ...The following terms are used in describing innodb_autoinc_lock_mode settings: “INSERT-like” statements All statements that generate new rows in a table, including INSERT, INSERT ...
https://dev.mysql.com/doc/refman/8.4/en/glossary.html
In the simplest case, if one transaction is inserting values into the table, any other transactions must wait to do their own inserts into that table, so that rows inserted by the first transaction receive consecutive primary key values. For ...