File	Doc	Category	Size	Date	Package
ResultSetMetaData.java	API Doc	Java SE 6 API	10007	Tue Jun 10 00:25:50 BST 2008	java.sql

ResultSetMetaData

ResultSet rs = stmt.executeQuery("SELECT a, b, c FROM TABLE2");
ResultSetMetaData rsmd = rs.getMetaData();
int numberOfColumns = rsmd.getColumnCount();
boolean b = rsmd.isSearchable(1);

Fields Summary
int	columnNoNulls The constant indicating that a column does not allow NULL values.
int	columnNullable The constant indicating that a column allows NULL values.
int	columnNullableUnknown The constant indicating that the nullability of a column's values is unknown.

Constructors Summary

Methods Summary
public java.lang.String	getCatalogName(int column) Gets the designated column's table's catalog name. param column the first column is 1, the second is 2, ... return the name of the catalog for the table in which the given column appears or "" if not applicable exception SQLException if a database access error occurs
public java.lang.String	getColumnClassName(int column) Returns the fully-qualified name of the Java class whose instances are manufactured if the method ResultSet.getObject is called to retrieve a value from the column. ResultSet.getObject may return a subclass of the class returned by this method. param column the first column is 1, the second is 2, ... return the fully-qualified name of the class in the Java programming language that would be used by the method ResultSet.getObject to retrieve the value in the specified column. This is the class name used for custom mapping. exception SQLException if a database access error occurs since 1.2
public int	getColumnCount() Returns the number of columns in this ResultSet object. return the number of columns exception SQLException if a database access error occurs
public int	getColumnDisplaySize(int column) Indicates the designated column's normal maximum width in characters. param column the first column is 1, the second is 2, ... return the normal maximum number of characters allowed as the width of the designated column exception SQLException if a database access error occurs
public java.lang.String	getColumnLabel(int column) Gets the designated column's suggested title for use in printouts and displays. The suggested title is usually specified by the SQL AS clause. If a SQL AS is not specified, the value returned from getColumnLabel will be the same as the value returned by the getColumnName method. param column the first column is 1, the second is 2, ... return the suggested column title exception SQLException if a database access error occurs
public java.lang.String	getColumnName(int column) Get the designated column's name. param column the first column is 1, the second is 2, ... return column name exception SQLException if a database access error occurs
public int	getColumnType(int column) Retrieves the designated column's SQL type. param column the first column is 1, the second is 2, ... return SQL type from java.sql.Types exception SQLException if a database access error occurs see Types
public java.lang.String	getColumnTypeName(int column) Retrieves the designated column's database-specific type name. param column the first column is 1, the second is 2, ... return type name used by the database. If the column type is a user-defined type, then a fully-qualified type name is returned. exception SQLException if a database access error occurs
public int	getPrecision(int column) Get the designated column's specified column size. For numeric data, this is the maximum precision. For character data, this is the length in characters. For datetime datatypes, this is the length in characters of the String representation (assuming the maximum allowed precision of the fractional seconds component). For binary data, this is the length in bytes. For the ROWID datatype, this is the length in bytes. 0 is returned for data types where the column size is not applicable. param column the first column is 1, the second is 2, ... return precision exception SQLException if a database access error occurs
public int	getScale(int column) Gets the designated column's number of digits to right of the decimal point. 0 is returned for data types where the scale is not applicable. param column the first column is 1, the second is 2, ... return scale exception SQLException if a database access error occurs
public java.lang.String	getSchemaName(int column) Get the designated column's table's schema. param column the first column is 1, the second is 2, ... return schema name or "" if not applicable exception SQLException if a database access error occurs
public java.lang.String	getTableName(int column) Gets the designated column's table name. param column the first column is 1, the second is 2, ... return table name or "" if not applicable exception SQLException if a database access error occurs
public boolean	isAutoIncrement(int column) Indicates whether the designated column is automatically numbered. param column the first column is 1, the second is 2, ... return true if so; false otherwise exception SQLException if a database access error occurs
public boolean	isCaseSensitive(int column) Indicates whether a column's case matters. param column the first column is 1, the second is 2, ... return true if so; false otherwise exception SQLException if a database access error occurs
public boolean	isCurrency(int column) Indicates whether the designated column is a cash value. param column the first column is 1, the second is 2, ... return true if so; false otherwise exception SQLException if a database access error occurs
public boolean	isDefinitelyWritable(int column) Indicates whether a write on the designated column will definitely succeed. param column the first column is 1, the second is 2, ... return true if so; false otherwise exception SQLException if a database access error occurs
public int	isNullable(int column) Indicates the nullability of values in the designated column. param column the first column is 1, the second is 2, ... return the nullability status of the given column; one of columnNoNulls, columnNullable or columnNullableUnknown exception SQLException if a database access error occurs
public boolean	isReadOnly(int column) Indicates whether the designated column is definitely not writable. param column the first column is 1, the second is 2, ... return true if so; false otherwise exception SQLException if a database access error occurs
public boolean	isSearchable(int column) Indicates whether the designated column can be used in a where clause. param column the first column is 1, the second is 2, ... return true if so; false otherwise exception SQLException if a database access error occurs
public boolean	isSigned(int column) Indicates whether values in the designated column are signed numbers. param column the first column is 1, the second is 2, ... return true if so; false otherwise exception SQLException if a database access error occurs
public boolean	isWritable(int column) Indicates whether it is possible for a write on the designated column to succeed. param column the first column is 1, the second is 2, ... return true if so; false otherwise exception SQLException if a database access error occurs