@文心快码mysql getcolumntype 文心快码 在MySQL中,可以使用DESCRIBE或SHOW COLUMNS语句来获取表的列信息,包括列的数据类型。 具体来说,以下是两种常用的方法: 使用DESCRIBE语句: sql DESCRIBE table_name; 或者简写为: sql DESC table_name; 这将返回表中所有列的信息,包括列名、数据类型
(2)getColumnType()获取tinyint(1)类型,mysql返回-7(BIT),openGauss返回-6(TINYINT),除tinyint(1)值不同外,其他值一致 SMALLINT(n) UNSIGNED (1)getObject()获取smallint unsigned类型,mysql返回java.lang.Integer,opengauss返回org.opengauss.util.PGobject,值一致 ...
pStemt=conn.prepareStatement(tableSql);//结果集元数据ResultSetMetaData rsmd =pStemt.getMetaData();//表列数intsize =rsmd.getColumnCount();for(inti = 0; i < size; i++) { columnTypes.add(rsmd.getColumnTypeName(i+ 1)); } }catch(SQLException e) { LOGGER.error("getColumnTypes failure"...
uint16_t mysqlx_column_get_type (mysqlx_result_t *res, uint32_t pos) Get column type identifier. More... uint16_t mysqlx_column_get_collation (mysqlx_result_t *res, uint32_t pos) Get column collation number. More... uint32_t mysqlx_column_get_length (mysqlx_result_t *res, ...
ResultSetMetaData meta = rs.getMetaData(); int columeCount = meta.getColumnCount(); for (int i = 1; i < columeCount + 1; i++) { TableField tableField = new TableField(); tableField.setName(meta.getColumnName(i)); tableField.setType(Integer.toString(meta.getColumnType(i))); ...
when I use the Connector/J driver, I get a java.sql.Types code 7 (incorrect?) with calling getColumnType() for a mysql float data type. I created a simple example to reproduce this: (the interesting field is the "myFloat" field). ...
"type": 1, "algorithm": 2, "is_algorithm_explicit": false, "is_visible": true, "engine": "InnoDB", "engine_attribute": "", "secondary_engine_attribute": "", "elements": [ { "ordinal_position": 1, "length": 4, "order": 2, "hidden": false, "column_opx": 0 }, { "ordin...
Returns the table label. Returns: The table label. Return type: str get_table_name() → str¶Returns the table name. Returns: The table name. Return type: str get_type() → int¶Returns the column type. Returns: The column type. Return type: int ...
public static void printColumn(List<Column> columns) { columns.forEach((column) -> { String columnName = column.getName(); String columnValue = column.getValue(); String columnType = column.getMysqlType(); // 判断 该字段是否更新
(null,null,tableName,null);// 遍历列while(columns.next()){StringcolumnName=columns.getString("COLUMN_NAME");StringcolumnType=columns.getString("TYPE_NAME");// 输出列名和类型System.out.println("Column: "+columnName+" Type: "+columnType);}columns.close();}tables.close();}catch(...