MySQL 8.4.3
Source Code Documentation
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if CLIENT_PROTOCOL_41 is set Protocol::ColumnDefinition41: is used, Protocol::ColumnDefinition320:
Type | Name | Description |
---|---|---|
string<lenenc> | catalog | The catalog used. Currently always "def" |
string<lenenc> | schema | schema name |
string<lenenc> | table | virtual table name |
string<lenenc> | org_table | physical table name |
string<lenenc> | name | virtual column name |
string<lenenc> | org_name | physical column name |
int<lenenc> | length of fixed length fields | [0x0c] |
int<2> | character_set | the column character set as defined in Character Set |
int<4> | column_length | maximum length of the field |
int<1> | type | type of the column as defined in enum_field_types |
int<2> | flags | Flags as defined in Column Definition Flags |
int<1> | decimals | max shown decimal digits:
|
decimals
and column_length
can be used for text output formattingType | Name | Description |
---|---|---|
string<lenenc> | table | Table name |
string<lenenc> | name | Column name |
int<lenenc> | length of type field | [01] |
int<1> | type | type of the column as defined in enum_field_types |
if capabilities & CLIENT_LONG_FLAG { | ||
int<lenenc> | length of flags + decimals fields | [03] |
int<2> | flags | Flags as defined in Column Definition Flags |
int<1> | decimals | number of decimal digits |
} else { | ||
int<lenenc> | length of flags + decimals fields | [02] |
int<2> | flags | Flags as defined in Column Definition Flags |
int<1> | decimals | number of decimal digits |
} | ||
if command was COM_FIELD_LIST { | ||
int<lenenc> | length of default values | [02] |
string<lenenc> | default_values | |
} |