java生成greenplum建表语句

在Java中生成Greenplum建表语句，可以使用字符串拼接的方式，具体代码如下：

String tableName = "table_name";
String[] columns = {"column1", "column2", "column3"};
String[] types = {"VARCHAR(255)", "INT", "DECIMAL(10,2)"};
String[] comments = {"column1 comment", "column2 comment", "column3 comment"};

StringBuilder sb = new StringBuilder();
sb.append("CREATE TABLE ").append(tableName).append(" (");

for (int i = 0; i < columns.length; i++) {
    sb.append(columns[i]).append(" ").append(types[i]).append(" COMMENT '").append(comments[i]).append("'");
    if (i < columns.length - 1) {
        sb.append(",");
    }
}

sb.append(")");

String createTableSql = sb.toString();
System.out.println(createTableSql);

以上代码会生成如下的建表语句：

CREATE TABLE table_name (
    column1 VARCHAR(255) COMMENT 'column1 comment',
    column2 INT COMMENT 'column2 comment',
    column3 DECIMAL(10,2) COMMENT 'column3 comment'
)