Rechercher dans le manuel MySQL
Search Results
https://dev.mysql.com/mysql-cluster-replication-conflict-resolution.html
--ndb-log-update-as-write Option: Logging Changed Data as Updates Property Value Command-Line Format --ndb-log-update-as-write[={OFF|ON}] System Variable ndb_log_update_as_write Scope Global Dynamic Yes SET_VAR Hint Applies No Type Boolean Default ... When using a replication setup involving multiple masters (including circular replication), it is possible that different masters may try to update the same row on the slave with different ...
https://dev.mysql.com/c-api-data-structures.html
my_bool A boolean type, for values that are true (nonzero) or false (zero). The following example illustrates a typical use of the flags value: if (field->flags & NOT_NULL_FLAG) printf("Field cannot be null\n"); You may use the convenience macros ...
https://dev.mysql.com/validate-password-options-variables.html
validate_password.check_user_name Property Value Command-Line Format --validate-password.check-user-name[={OFF|ON}] Introduced 8.0.4 System Variable validate_password.check_user_name Scope Global Dynamic Yes SET_VAR Hint Applies No Type Boolean ...
https://dev.mysql.com/non-typed-operators.html
Table 12.2 Operators Name Description AND, && Logical AND = Assign a value (as part of a SET statement, or as part of the SET clause in an UPDATE statement) := Assign a value BETWEEN ... ->> Return value from JSON column after evaluating path and ...
https://dev.mysql.com/numeric-type-overview.html
For additional information about properties and storage requirements of the numeric types, see Section 11.2, “Numeric Types”, and Section 11.8, “Data Type Storage Requirements”. Display width is unrelated to the range of values a type can ...
https://dev.mysql.com/create-table-check-constraints.html
expr specifies the constraint condition as a boolean expression that must evaluate to TRUE or UNKNOWN (for NULL values) for each row of the table. Prior to MySQL 8.0.16, CREATE TABLE permits only the following limited version of table CHECK ...
https://dev.mysql.com/charset-restrictions.html
However, you can perform IN BOOLEAN MODE searches on the column without an index. Identifiers are stored in mysql database tables (user, db, and so forth) using utf8, but identifiers can contain only characters in the Basic Multilingual Plane (BMP). The ucs2, utf16, utf16le, and utf32 character sets have the following restrictions: None of them can be used as the client character ...
https://dev.mysql.com/working-with-null.html
The NULL value can be surprising until you get used to it. Conceptually, NULL means “a missing unknown value” and it is treated somewhat differently from other values. In MySQL, 0 or NULL means false and anything else means true. This special ...
https://dev.mysql.com/mysql-eof.html
(In fact, they provide more information, because mysql_eof() returns only a boolean value whereas the error functions indicate a reason for the error when one occurs.) Zero for success. mysql_eof() determines whether the last row of a result set has ...
https://dev.mysql.com/mysql-shell-tutorial-python-documents-collections.html
When you are using MySQL as a Document Store, collections are containers within a schema that you can create, list, and drop. Collections contain JSON documents that you can add, find, update, and remove. The examples in this section use the ...
Document created the 26/06/2006, last modified the 26/10/2018
Source of the printed document:https://www.gaudry.be/en/mysql-rf-fct-boolean-p-7.html
The infobrol is a personal site whose content is my sole responsibility. The text is available under CreativeCommons license (BY-NC-SA). More info on the terms of use and the author.
References
These references and links indicate documents consulted during the writing of this page, or which may provide additional information, but the authors of these sources can not be held responsible for the content of this page.
The author This site is solely responsible for the way in which the various concepts, and the freedoms that are taken with the reference works, are presented here. Remember that you must cross multiple source information to reduce the risk of errors.
