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https://dev.mysql.com/doc/internals/en/implementing-index-read-method.html
If the *key parameter is null, the storage engine should read the first key in the index. The [custom-engine.html#custom-engine-api-reference-index_read index_read()] method is used to retrieve a row based on a key: int ha_foo::index_read(byte * ...
https://dev.mysql.com/doc/internals/en/index-read.html
If the key value is null, begin at the first key of the index. Purpose Find a row based on a key and return. Synopsis virtual int index_read ( buf, key, keypart_map, find_flag); byte * buf ; const byte * key ; ulonglong keypart_map ; enum ...
https://dev.mysql.com/doc/internals/en/integer.html
Depending on the context, the first byte may also have other meanings: If it is 0xfb, it is represents a NULL in a ProtocolText::ResultsetRow. The MySQL Protocol has a set of possible encodings for integers: Fixed-length integers Length-encoded ...
https://dev.mysql.com/doc/internals/en/mismatch-of-focus-of-test-and-code-sequence.html
CREATE TABLE t1 ( id INT NOT NULL AUTO_INCREMENT, my_column VARCHAR(30), name LONGTEXT, PRIMARY KEY (id)); INSERT INTO t1(my_column,name) VALUES('2','two'); INSERT INTO t1(my_column,name) VALUES('1','one'); INSERT INTO t1(my_column,name) ...
https://dev.mysql.com/doc/internals/en/myisampack-tricks.html
These cope with leading and trailing spaces or zeros or with all blank or NULL fields. As already mentioned, myisampack uses some tricks to decrease the amount of data to be encoded. They do not materialize in the compressed data files other than ...
https://dev.mysql.com/doc/internals/en/open.html
Usage This example is from the CSV storage engine: int ha_tina::open(const char *name, int mode, uint test_if_locked) { DBUG_ENTER("ha_tina::open"); if (!(share= get_share(name, table))) DBUG_RETURN(1); thr_lock_data_init(&share->lock,&lock,NULL); ...Synopsis virtual int open ( name, mode, test_if_locked); const char * name ; int mode ; uint test_if_locked ; Description This is the open ...
https://dev.mysql.com/doc/ndbapi/en/ch04s03s01s01.html
ClusterJ provides these major interfaces for use by application programs: com.mysql.clusterj.SessionFactory, com.mysql.clusterj.Session, com.mysql.clusterj.Transaction, com.mysql.clusterj.query.QueryBuilder, and com.mysql.clusterj.Query.
https://dev.mysql.com/doc/ndbapi/en/mccj-overview-clusterj-object-models.html
This section discusses the ClusterJ API and the object model used to represent the data handled by the application. The ClusterJ API depends on 4 main interfaces: Session, SessionFactory, Transaction, and QueryBuilder. All access to NDB Cluster ...
https://dev.mysql.com/doc/ndbapi/en/ndb-error-codes-user-defined-error.html
The following list enumerates all NDB errors of type UD (User defined error).
https://dev.mysql.com/doc/ndbapi/en/ndb-ndberror.html
ConstraintViolation A constraint violation occurred, such as attempting to insert a tuple having a primary key value already in use in the target table. This section provides information about the NdbError data structure, which contains status and ...