java.lang.Object
- com.mysql.cj.jdbc.result.ResultSetMetaData

所有已实现的接口:

ResultSetMetaData, Wrapper
```
public class ResultSetMetaData
extends Object
implements ResultSetMetaData
```
A ResultSetMetaData object can be used to find out about the types and properties of the columns in a ResultSet

字段概要
- 从接口继承的字段 java.sql.ResultSetMetaData
  columnNoNulls, columnNullable, columnNullableUnknown

构造器概要

构造器
构造器	说明
`ResultSetMetaData(Session session, Field[] fields, boolean useOldAliasBehavior, boolean treatYearAsDate, ExceptionInterceptor exceptionInterceptor)`	Initialize for a result with a tuple set and a field descriptor set

方法概要

所有方法实例方法具体方法
修饰符和类型	方法	说明
`String`	`getCatalogName(int column)`
`String`	`getColumnCharacterEncoding(int column)`	What's the Java character encoding name for the given column?
`String`	`getColumnCharacterSet(int column)`	What's the MySQL character set name for the given column?
`String`	`getColumnClassName(int column)`
`int`	`getColumnCount()`
`int`	`getColumnDisplaySize(int column)`
`String`	`getColumnLabel(int column)`
`String`	`getColumnName(int column)`
`int`	`getColumnType(int column)`
`String`	`getColumnTypeName(int column)`
`protected Field`	`getField(int columnIndex)`	Returns the field instance for the given column index
`Field[]`	`getFields()`
`int`	`getPrecision(int column)`
`int`	`getScale(int column)`
`String`	`getSchemaName(int column)`
`String`	`getTableName(int column)`
`boolean`	`isAutoIncrement(int column)`
`boolean`	`isCaseSensitive(int column)`
`boolean`	`isCurrency(int column)`
`boolean`	`isDefinitelyWritable(int column)`
`int`	`isNullable(int column)`
`boolean`	`isReadOnly(int column)`
`boolean`	`isSearchable(int column)`
`boolean`	`isSigned(int column)`
`boolean`	`isWrapperFor(Class<?> iface)`
`boolean`	`isWritable(int column)`
`String`	`toString()`
`<T> T`	`unwrap(Class<T> iface)`

从类继承的方法 java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

- 构造器详细资料
  - ResultSetMetaData
```
public ResultSetMetaData(Session session,
                         Field[] fields,
                         boolean useOldAliasBehavior,
                         boolean treatYearAsDate,
                         ExceptionInterceptor exceptionInterceptor)
```
    Initialize for a result with a tuple set and a field descriptor set
    
    参数:
    
    session - this Session
    
    fields - the array of field descriptors
    
    useOldAliasBehavior - 'useOldAliasMetadataBehavior' property value
    
    treatYearAsDate - 'yearIsDateType' property value
    
    exceptionInterceptor - exception interceptor
- 方法详细资料
  - getCatalogName
```
public String getCatalogName(int column)
                      throws SQLException
```
    指定者:
    
    getCatalogName 在接口中 ResultSetMetaData
    
    抛出:
    
    SQLException
  - getColumnCharacterEncoding
```
public String getColumnCharacterEncoding(int column)
                                  throws SQLException
```
    What's the Java character encoding name for the given column?
    
    参数:
    
    column - the first column is 1, the second is 2, etc.
    
    返回:
    
    the Java character encoding name for the given column, or null if no Java character encoding maps to the MySQL character set for the given column.
    
    抛出:
    
    SQLException - if an invalid column index is given.
  - getColumnCharacterSet
```
public String getColumnCharacterSet(int column)
                             throws SQLException
```
    What's the MySQL character set name for the given column?
    
    参数:
    
    column - the first column is 1, the second is 2, etc.
    
    返回:
    
    the MySQL character set name for the given column
    
    抛出:
    
    SQLException - if an invalid column index is given.
  - getColumnClassName
```
public String getColumnClassName(int column)
                          throws SQLException
```
    指定者:
    
    getColumnClassName 在接口中 ResultSetMetaData
    
    抛出:
    
    SQLException
  - getColumnCount
```
public int getColumnCount()
                   throws SQLException
```
    指定者:
    
    getColumnCount 在接口中 ResultSetMetaData
    
    抛出:
    
    SQLException
  - getColumnDisplaySize
```
public int getColumnDisplaySize(int column)
                         throws SQLException
```
    指定者:
    
    getColumnDisplaySize 在接口中 ResultSetMetaData
    
    抛出:
    
    SQLException
  - getColumnLabel
```
public String getColumnLabel(int column)
                      throws SQLException
```
    指定者:
    
    getColumnLabel 在接口中 ResultSetMetaData
    
    抛出:
    
    SQLException
  - getColumnName
```
public String getColumnName(int column)
                     throws SQLException
```
    指定者:
    
    getColumnName 在接口中 ResultSetMetaData
    
    抛出:
    
    SQLException
  - getColumnType
```
public int getColumnType(int column)
                  throws SQLException
```
    指定者:
    
    getColumnType 在接口中 ResultSetMetaData
    
    抛出:
    
    SQLException
  - getColumnTypeName
```
public String getColumnTypeName(int column)
                         throws SQLException
```
    指定者:
    
    getColumnTypeName 在接口中 ResultSetMetaData
    
    抛出:
    
    SQLException
  - getField
```
protected Field getField(int columnIndex)
                  throws SQLException
```
    Returns the field instance for the given column index
    
    参数:
    
    columnIndex - the column number to retrieve a field instance for
    
    返回:
    
    the field instance for the given column index
    
    抛出:
    
    SQLException - if an error occurs
  - getPrecision
```
public int getPrecision(int column)
                 throws SQLException
```
    指定者:
    
    getPrecision 在接口中 ResultSetMetaData
    
    抛出:
    
    SQLException
  - getScale
```
public int getScale(int column)
             throws SQLException
```
    指定者:
    
    getScale 在接口中 ResultSetMetaData
    
    抛出:
    
    SQLException
  - getSchemaName
```
public String getSchemaName(int column)
                     throws SQLException
```
    指定者:
    
    getSchemaName 在接口中 ResultSetMetaData
    
    抛出:
    
    SQLException
  - getTableName
```
public String getTableName(int column)
                    throws SQLException
```
    指定者:
    
    getTableName 在接口中 ResultSetMetaData
    
    抛出:
    
    SQLException
  - isAutoIncrement
```
public boolean isAutoIncrement(int column)
                        throws SQLException
```
    指定者:
    
    isAutoIncrement 在接口中 ResultSetMetaData
    
    抛出:
    
    SQLException
  - isCaseSensitive
```
public boolean isCaseSensitive(int column)
                        throws SQLException
```
    指定者:
    
    isCaseSensitive 在接口中 ResultSetMetaData
    
    抛出:
    
    SQLException
  - isCurrency
```
public boolean isCurrency(int column)
                   throws SQLException
```
    指定者:
    
    isCurrency 在接口中 ResultSetMetaData
    
    抛出:
    
    SQLException
  - isDefinitelyWritable
```
public boolean isDefinitelyWritable(int column)
                             throws SQLException
```
    指定者:
    
    isDefinitelyWritable 在接口中 ResultSetMetaData
    
    抛出:
    
    SQLException
  - isNullable
```
public int isNullable(int column)
               throws SQLException
```
    指定者:
    
    isNullable 在接口中 ResultSetMetaData
    
    抛出:
    
    SQLException
  - isReadOnly
```
public boolean isReadOnly(int column)
                   throws SQLException
```
    指定者:
    
    isReadOnly 在接口中 ResultSetMetaData
    
    抛出:
    
    SQLException
  - isSearchable
```
public boolean isSearchable(int column)
                     throws SQLException
```
    指定者:
    
    isSearchable 在接口中 ResultSetMetaData
    
    抛出:
    
    SQLException
  - isSigned
```
public boolean isSigned(int column)
                 throws SQLException
```
    指定者:
    
    isSigned 在接口中 ResultSetMetaData
    
    抛出:
    
    SQLException
  - isWritable
```
public boolean isWritable(int column)
                   throws SQLException
```
    指定者:
    
    isWritable 在接口中 ResultSetMetaData
    
    抛出:
    
    SQLException
  - toString
```
public String toString()
```
    覆盖:
    
    toString 在类中 Object
  - isWrapperFor
```
public boolean isWrapperFor(Class<?> iface)
                     throws SQLException
```
    指定者:
    
    isWrapperFor 在接口中 Wrapper
    
    抛出:
    
    SQLException
  - unwrap
```
public <T> T unwrap(Class<T> iface)
             throws SQLException
```
    指定者:
    
    unwrap 在接口中 Wrapper
    
    抛出:
    
    SQLException
  - getFields
```
public Field[] getFields()
```

类 ResultSetMetaData

字段概要

从接口继承的字段 java.sql.ResultSetMetaData

构造器概要

方法概要

从类继承的方法 java.lang.Object

构造器详细资料

ResultSetMetaData

方法详细资料

getCatalogName

getColumnCharacterEncoding

getColumnCharacterSet

getColumnClassName

getColumnCount

getColumnDisplaySize

getColumnLabel

getColumnName

getColumnType

getColumnTypeName

getField

getPrecision

getScale

getSchemaName

getTableName

isAutoIncrement

isCaseSensitive

isCurrency

isDefinitelyWritable

isNullable

isReadOnly

isSearchable

isSigned

isWritable

toString

isWrapperFor

unwrap

getFields