MySQL 9.6 Reference Manual Including MySQL NDB Cluster 9.6
The Column object represents the column
metadata in a result set. Column has the
methods listed here:
getFractionalDigits(): Gets the
fractional digits of the column value, if applicable.
Returns an integer.
getLength() Retrieves the length of the
column, as an integer.
getCharacterSetName(): Retrieves the name
of the character set used by the column.
See Chapter 12, Character Sets, Collations, Unicode, for more information about MySQL character sets and collations.
getCollationName() Retrieves the name of
the character set collation used by the column.
See Chapter 12, Character Sets, Collations, Unicode, for more information about MySQL character sets and collations.
getColumnLabel(): Returns a string value
representing the column alias, or the column name if no
alias is defined.
getColumnName(): Returns a string value
representing the column name.
getSchemaName(): Gets the name of the
schema in which the column is defined.
String getTableLabel(): Retrieves the
alias for the table in which the column occurs.
getTableName(): Gets the name of the
table in which the column occurs.
isNumberSigned(): Indicates whether a
numeric column is signed (true if it is
signed).
All of the methods just listed return strings unless otherwise indicated.