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https://dev.mysql.com/doc/refman/8.0/en/examples.html
Here are examples of how to solve some common problems with MySQL. Some of the examples use the table shop to hold the price of each article (item number) for certain traders (dealers). Supposing that each trader has a single fixed price per ...
https://dev.mysql.com/doc/refman/8.0/en/file-permissions.html
For example, setting UMASK=0600 is equivalent to UMASK=384 because 0600 octal is 384 decimal. If you have problems with file permissions, the UMASK or UMASK_DIR environment variable might be set incorrectly when mysqld starts. For example, mysqld ...
https://dev.mysql.com/doc/refman/8.0/en/floating-point-types.html
Here, (M,D) means than values can be stored with up to M digits in total, of which D digits may be after the decimal point. The FLOAT and DOUBLE types represent approximate numeric data values. MySQL uses four bytes for single-precision values and ...
https://dev.mysql.com/doc/refman/8.0/en/information-schema-innodb-columns-table.html
1 = VARCHAR, 2 = CHAR, 3 = FIXBINARY, 4 = BINARY, 5 = BLOB, 6 = INT, 7 = SYS_CHILD, 8 = SYS, 9 = FLOAT, 10 = DOUBLE, 11 = DECIMAL, 12 = VARMYSQL, 13 = MYSQL, 14 = GEOMETRY. For related usage information and examples, see Section 17.15.3, “InnoDB ...
https://dev.mysql.com/doc/refman/8.0/en/innodb-fulltext-index.html
For example, in the auxiliary table name test/fts_0000000000000147_00000000000001c9_index_1, the hex value 1c9 has a decimal value of 457. Full-text indexes are created on text-based columns (CHAR, VARCHAR, or TEXT columns) to speed up queries and ...
https://dev.mysql.com/doc/refman/8.0/en/innodb-information-schema-system-tables.html
MB values are rounded to zero decimal spaces using the ROUND() function. You can extract metadata about schema objects managed by InnoDB using InnoDB INFORMATION_SCHEMA tables. Traditionally, you would get this type of information using the ...
https://dev.mysql.com/doc/refman/8.0/en/json-table-functions.html
When a value saved to a column is truncated, such as saving 3.14159 in a DECIMAL(10,1) column, a warning is issued independently of any ON ERROR option. This section contains information about JSON functions that convert JSON data to tabular data.
https://dev.mysql.com/doc/refman/8.0/en/keywords.html
Certain keywords, such as SELECT, DELETE, or BIGINT, are reserved and require special treatment for use as identifiers such as table and column names. This may also be true for the names of built-in functions. Reserved words are permitted as ...
https://dev.mysql.com/doc/refman/8.0/en/partitioning-types.html
This section discusses the types of partitioning which are available in MySQL 8.0. This type of partitioning assigns rows to partitions based on column values falling within a given range. For information about an extension to this type, RANGE ...
https://dev.mysql.com/doc/refman/8.0/en/locale-support.html
The lc_time_names value does not affect the result from FORMAT(), but this function takes an optional third parameter that enables a locale to be specified to be used for the result number's decimal point, thousands separator, and grouping between ... The locale indicated by the lc_time_names system variable controls the language used to display day and month names and ...