Question

我会很感激一些建议。我正在完成一个表的简单加载，其中包含来自CSV文件的五个记录。当我加载表格时，我得到以下错误：

liquibase.exception.DatabaseException: org.postgresql.util.PSQLException: ERROR: zero-length delimited identifier at or near """"

这是通过csv文件

1,Nate Happy,natehappy1761@me.com,1761 Brookview Trail,(205) 555-1212
2,Brigette Happy,brigettehappy7507@me.com,7507 Meadowgate Lane,(704) 555-1212
3,Katie Happy,katiehappy7507@me.com,7507 Meadowgate Lane,(704) 555-1212
4,Lauren Happy,laurenhappy@me.com,7507 Meadowgate Lane,(704) 555-1212
5,Jackson Hope,jacksonhope@me.com,7507 Meadowgate Lane,(704) 555-1212

这是我加载数据的变更集

<changeSet id="6-loadData" author="liquibase" dbms="postgresql" >
<preConditions onErrorMessage="Failed Pre Conditions for table" onFail="HALT"> 
      <and>
      <tableExists schemaName="public" tableName="contact" />
      <sqlCheck expectedResult ="1">SELECT COUNT(*) contact</sqlCheck>
      </and>
</preConditions>
<comment>Adding Data...</comment>
   <loadUpdateData catalogName="pg_catalog"
        encoding="UTF-8"
        file="src/main/resources/data/contacts.csv"
        primaryKey="contact_id"
        quotchar="A String"
        schemaName="public"
        separator=","
        tableName="contact">
      <column name="contact_id" type="int" />
      <column name="contact_name" type="varchar(45)"/>
      <column name="email" type="varchar(45)" />
      <column name="address" type="varchar(45)" />
      <column name="telephone" type="varchar(45)" />
   </loadUpdateData>

这是我创建表格的变更集：

   <changeSet id="4 Create Table" author="liquibase" runAlways="true">
   <preConditions onErrorMessage="Failed Pre Conditions for table" onFail="MARK_RAN"> 
       <not><tableExists schemaName="public" tableName="contact"/> </not>
   </preConditions>
   <comment>Creating Table named: Contact...</comment>
   <createTable tableName="contact" schemaName="public">
      <column name="contact_id" type="int" >
      <constraints primaryKey="true" nullable="false"/>
      </column>
      <column name="contact_name" type="varchar(45)">
         <constraints nullable="false"/>
      </column>
      <column name="email" type="varchar(45)">
         <constraints nullable="false"/>
      </column>
      <column name="address" type="varchar(45)">
         <constraints nullable="false"/>
      </column>
      <column name="telephone" type="varchar(45)">
         <constraints nullable="false"/>
      </column>
   </createTable>

以下是我用于主键（contact_id）的序列

   <changeSet id="2-Create Sequence" author="liquibase" runAlways="true">
   <preConditions onErrorMessage="Failed Pre Conditions for sequence" onFail="MARK_RAN"> 
      <not><sequenceExists schemaName="public" sequenceName="contactid_seq" /></not>
    </preConditions>
   <comment>Creating Sequence...</comment>
   <createSequence sequenceName="contactid_seq"
                    incrementBy="1"
                    minValue="1"
                    maxValue="9223372036854775807"
                    startValue="1"
                    ordered="1"
                    schemaName="public"/>

这就是我使用约束的方式：

   <changeSet id="5-Add Constraint" author="liquibase">
     <comment>Adding contactid_seq sequence to Contact table...</comment> 
     <addDefaultValue catalogName="pg_catalog"
        columnDataType="int"
        columnName="contact_id"
        tableName="contact"
        schemaName="public"
        defaultValueSequenceNext="contactid_seq" />

感谢您抽出宝贵时间阅读我的帖子。

拉斯

Answer 1

我发现CSV文件缺少HEADER列名。 LoadUpdateData的列元素使用特定的Java类型，例如String而不是VARCHAR（45）和NUMERIC而不是“int”。一旦我纠正了这两个错误，我就成功了。

Answer 2

如果你在手册中设置了

，请不要忘记更改一串quotchar

quotchar =“A String”

然后Liquibase将字母“A”标记为引号。

您可以将其从变更集中排除，并使用默认的html引号charset

使用<loadupdatedata> Postgres </loadupdatedata>从CSV文件加载数据

2 个答案: