Question

如何将文件中的数据加载到hsqldb表中？我有这个声明在mysql中正常工作，我想改变它以适用于hsqldb。

String sqlLoadkey ="load data local infile " +"'E:/Thesis/ThesisWork/outdata/keywords.txt'"+ " \n" +
            "   into table "+ "keywordsTable" +"(keywords)";
         stmt1.executeUpdate(sqlLoadkey);

这是我得到的例外

java.sql.SQLSyntaxErrorException: unexpected token: LOAD
at org.hsqldb.jdbc.JDBCUtil.sqlException(Unknown Source)
at org.hsqldb.jdbc.JDBCUtil.sqlException(Unknown Source)
at org.hsqldb.jdbc.JDBCStatement.fetchResult(Unknown Source)
at org.hsqldb.jdbc.JDBCStatement.executeUpdate(Unknown Source)
at ThesisCode.ReductionTry.main(ReductionTry.java:67)
Exception in thread "main" java.lang.NullPointerException
at ThesisCode.ReductionTry.main(ReductionTry.java:138)

任何想法感谢

Answer 1

LOAD DATA是一个对hsqldb无效的MySQL命令，但您可以使用临时表并更改源：

-- remporary table
create table yourdb.tmp_textfiletable (col1 varchar(250));  

set table yourdb.tmp_textfiletable 
    source "'E:/Thesis/ThesisWork/outdata/keywords.txt';ignore_first=false";

-- And insert it in your normal table:

INSERT INTO yourdb.keywordsTable (keywords) 
    select Col1 from yourdb.tmp_textfiletable;

-- after that you can drop it

drop table yourdb.tmp_textfiletable

将数据从文件加载到hsqldb

1 个答案: