PDF (US Ltr)
- 35.1Mb
PDF (A4)
- 35.2Mb
Man Pages (TGZ)
- 256.4Kb
Man Pages (Zip)
- 361.2Kb
Info (Gzip)
- 3.4Mb
Info (Zip)
- 3.4Mb
Search Results
https://dev.mysql.com/doc/refman/5.7/en/comparison-operators.html
Table 12.4 Comparison Operators Name Description > Greater than operator >= Greater than or equal operator < Less than operator <>, != Not equal operator <= Less than or equal operator <=> NULL-safe equal to operator = Equal operator BETWEEN ...
https://dev.mysql.com/doc/refman/5.7/en/mysql-cluster-options-variables.html
row *************************** id: 1 select_type: SIMPLE table: d type: ALL possible_keys: PRIMARY key: NULL key_len: NULL ref: NULL rows: 9 Extra: Parent of 4 pushed join@1 *************************** 2. ndb_slave_conflict_role can take any one of ... This section provides information about MySQL server options, server and status variables that are specific to NDB ...
https://dev.mysql.com/doc/refman/5.7/en/timestamp-initialization.html
In addition, if the explicit_defaults_for_timestamp system variable is disabled, you can initialize or update any TIMESTAMP (but not DATETIME) column to the current date and time by assigning it a NULL value, unless it has been defined with the NULL ... TIMESTAMP and DATETIME columns can be automatically initializated and updated to the current date and time (that is, the current ...
https://dev.mysql.com/doc/refman/5.7/en/json-search-functions.html
Returns NULL if any argument is NULL, or if the path argument does not identify a section of the target document. Returns NULL if any argument is NULL or no paths locate a value in the document. row *************************** id: 1 select_type: ...
https://dev.mysql.com/doc/refman/5.7/en/explain-output.html
The value can be NULL if the row refers to the union result of other rows. If this column is NULL (or undefined in JSON-formatted output), there are no relevant indexes. If key is NULL, MySQL found no index to use for executing the query more ...
https://dev.mysql.com/doc/refman/5.7/en/get-diagnostics.html
Within a stored procedure p(), we attempt to insert two values into a table that contains a TEXT NOT NULL column. The first value is a non-NULL string and the second is NULL. The column prohibits NULL values, so the first insert succeeds but the ...
https://dev.mysql.com/doc/refman/5.7/en/glossary.html
It provides useful information for the query optimizer, because the column is known to be not null and with unique values. A column can be subject to a unique constraint, a NOT NULL constraint, or both. See Also cardinality, foreign key, index, NOT ... These terms are commonly used in information about the MySQL database ...
https://dev.mysql.com/doc/refman/5.7/en/information-schema-files-table.html
The value is NULL for all data files except for predefined system tablespace data files. A NULL value for a predefined system tablespace data file indicates that a file size limit was not defined explicitly. Where no value is provided by the ... The ...
https://dev.mysql.com/doc/refman/5.7/en/derived-tables.html
row *************************** id: 1 select_type: PRIMARY table: <derived2> partitions: NULL type: system possible_keys: NULL key: NULL key_len: NULL ref: NULL rows: 1 filtered: 100.00 Extra: NULL *************************** 2. row ... A derived ...
https://dev.mysql.com/doc/refman/5.7/en/mysql-cluster-ndbinfo.html
row *************************** Engine: BLACKHOLE Support: YES Comment: /dev/null storage engine (anything you write to it disappears) Transactions: NO XA: NO Savepoints: NO *************************** 5. ndbinfo is a database containing ...