~Column() Class destructor equal() Compares Column objects getArrayType() Gets the column's array type getAutoIncrement() Shows whether the column is auto-incrementing getCharset() Get the character set used by
"se_private_data": "table_id=1078;", "engine_attribute": "", "secondary_engine_attribute": "", "column_key": 1, "column_type_utf8": "", "elements": [], "collation_id": 63, "is_explicit_collation": false }, { "name": "DB_ROLL_PTR", "type": 9, "is_nullable": false...
getColumnTypeName(int i);获取指定列名的类型,参数是整数 从1开始 代码实例 package jdbc_task02.testmetadata;import jdbc_task02.com.wwjie.Utils.DruidUtils;import org.junit.Test;import java.sql.*;public class TestMetaData{//1.get sql mataData use DatabaseMetaData@Testpublic void testDataMetaData(...
Atimestampis a sequence of characters, denoting the date and/or time at which a certain event occurred. Timestamps are typically used for logging events. In MySQL we have aTIMESTAMPdata type for creating timestamps. ATIMESTAMPcolumn is useful for recording the date and time of anINSERTorU...
◆ mysqlx_column_get_type() uint16_t mysqlx_column_get_type ( mysqlx_result_t * res, uint32_t pos ) Get column type identifier. Parameters res result handle pos zero-based column number Returns column type identifier (see mysqlx_data_type_t enum) ◆ mysqlx_column_get_collatio...
databaseUserName, databaseUserPassword, sql,1, 5);//结果中的对应关系:column1 -- 表名; column2 -- 字段名; column3 -- 字段类型; column4 -- 字段类型长度; column5 -- 字段描述;returncolumnNameList; } 2,getJdbcData()方法在https://www.cnblogs.com/cailijuan/p/9964259.html...
ResultSet rs= conn.getMetaData().getColumns(null, getSchema(conn),tableName.toUpperCase(), "%");while(rs.next()){//System.out.println("字段名:"+rs.getString("COLUMN_NAME")+"--字段注释:"+rs.getString("REMARKS")+"--字段数据类型:"+rs.getString("TYPE_NAME"));Map map =newHashMap(...
SELECTcolumn_name,data_typeFROMinformation_schema.columnsWHEREtable_schema='your_database_name'ANDtable_name='employee_view'; 1. 2. 3. 运行上述SQL语句后,将会返回如下结果: 通过以上查询结果,我们可以得知employee_view视图包含三个字段,分别为employee_id(整型)、employee_name(字符串)和department(字符串)...
MySQL数据库主从同步,你get到了吗? 1.前言 数据库的主从复制想必大家不是很陌生了,而且我看也有文章介绍讲解。不要傻傻的认为主从复制就是主从同步。今天来学习数据库主从同步的原理及过程,数据库主要是用来存储WEB数据,在企业当中是极为重要的,下面一起来看下。
//Print out type for each column for(int i=1; i<=numOfCols; ++i) { System.out.println("Column [" + i + "] data type: " + rsmd.getColumnTypeName(i) + ", code: " + rsmd.getColumnType(i) + ", " + resultSet.getObject(i).getClass()); ...