ORA-01704：在SQL和PL / SQL中使用JSON_Table时字符串文字太长

Question

我正在尝试从JSON读取数据并将其存储在Oracle DB中。

我正在使用以下代码读取JSON数据，但收到“ ORA-01704：字符串文字太长”错误。

with json as (select to_clob('[    
  {
"Identifier": "999999999999999999999",
"Item_Document": "<item>\n<creationDateTime>2019-02-22T09:30:47Z</creationDateTime>\n<creationDateTime>2019-02-22T09:30:47Z</creationDateTime>\n<creationDateTime>2019-02-22T09:30:47Z</creationDateTime>\n<creationDateTime>2019-02-22T09:30:47Z</creationDateTime>\n<creationDateTime>2019-02-22T09:30:47Z</creationDateTime>\n<creationDateTime>2019-02-22T09:30:47Z</creationDateTime>\n<creationDateTime>2019-02-22T09:30:47Z</creationDateTime>\n<creationDateTime>2019-02-22T09:30:47Z</creationDateTime>\n<creationDateTime>2019-02-22T09:30:47Z</creationDateTime>\n<creationDateTime>2019-02-22T09:30:47Z</creationDateTime>\n<creationDateTime>2019-02-22T09:30:47Z</creationDateTime>\n<creationDateTime>2019-02-22T09:30:47Z</creationDateTime>\n<creationDateTime>2019-02-22T09:30:47Z</creationDateTime>\n<creationDateTime>2019-02-22T09:30:47Z</creationDateTime>\n<creationDateTime>2019-02-22T09:30:47Z</creationDateTime>\n<creationDateTime>2019-02-22T09:30:47Z</creationDateTime>\n<creationDateTime>2019-02-22T09:30:47Z</creationDateTime>\n<creationDateTime>2019-02-22T09:30:47Z</creationDateTime>\n<creationDateTime>2019-02-22T09:30:47Z</creationDateTime>\n<creationDateTime>2019-02-22T09:30:47Z</creationDateTime>\n<creationDateTime>2019-02-22T09:30:47Z</creationDateTime>\n<creationDateTime>2019-02-22T09:30:47Z</creationDateTime>\n<creationDateTime>2019-02-22T09:30:47Z</creationDateTime>\n<creationDateTime>2019-02-22T09:30:47Z</creationDateTime>\n<creationDateTime>2019-02-22T09:30:47Z</creationDateTime>\n<creationDateTime>2019-02-22T09:30:47Z</creationDateTime>\n<creationDateTime>2019-02-22T09:30:47Z</creationDateTime>\n<creationDateTime>2019-02-22T09:30:47Z</creationDateTime>\n<creationDateTime>2019-02-22T09:30:47Z</creationDateTime>\n<creationDateTime>2019-02-22T09:30:47Z</creationDateTime>\n<creationDateTime>2019-02-22T09:30:47Z</creationDateTime>\n<creationDateTime>2019-02-22T09:30:47Z</creationDateTime>\n<creationDateTime>2019-02-22T09:30:47Z</creationDateTime>\n<creationDateTime>2019-02-22T09:30:47Z</creationDateTime>\n<creationDateTime>2019-02-22T09:30:47Z</creationDateTime>\n<creationDateTime>2019-02-22T09:30:47Z</creationDateTime>\n<creationDateTime>2019-02-22T09:30:47Z</creationDateTime>\n<creationDateTime>2019-02-22T09:30:47Z</creationDateTime>\n<creationDateTime>2019-02-22T09:30:47Z</creationDateTime>\n<creationDateTime>2019-02-22T09:30:47Z</creationDateTime>\n<creationDateTime>2019-02-22T09:30:47Z</creationDateTime>\n<creationDateTime>2019-02-22T09:30:47Z</creationDateTime>\n<creationDateTime>2019-02-22T09:30:47Z</creationDateTime>\n<creationDateTime>2019-02-22T09:30:47Z</creationDateTime>\n<creationDateTime>2019-02-22T09:30:47Z</creationDateTime>\n<creationDateTime>2019-02-22T09:30:47Z</creationDateTime>\n<creationDateTime>2019-02-22T09:30:47Z</creationDateTime>\n<creationDateTime>2019-02-22T09:30:47Z</creationDateTime>\n<creationDateTime>2019-02-22T09:30:47Z</creationDateTime>\n<creationDateTime>2019-02-22T09:30:47Z</creationDateTime>\n<creationDateTime>2019-02-22T09:30:47Z</creationDateTime>\n<creationDateTime>2019-02-22T09:30:47Z</creationDateTime>\n<creationDateTime>2019-02-22T09:30:47Z</creationDateTime>\n<creationDateTime>2019-02-22T09:30:47Z</creationDateTime>\n<creationDateTime>2019-02-22T09:30:47Z</creationDateTime>\n<creationDateTime>2019-02-22T09:30:47Z</creationDateTime>\n<creationDateTime>2019-02-22T09:30:47Z</creationDateTime>\n<creationDateTime>2019-02-22T09:30:47Z</creationDateTime>\n<creationDateTime>2019-02-22T09:30:47Z</creationDateTime>\n<creationDateTime>2019-02-22T09:30:47Z</creationDateTime>\n<creationDateTime>2019-02-22T09:30:47Z</creationDateTime>\n<creationDateTime>2019-02-22T09:30:47Z</creationDateTime>\n<creationDateTime>2019-02-22T09:30:47Z</creationDateTime>\n<creationDateTime>2019-02-22T09:30:47Z</creationDateTime>\n<creationDateTime>2019-02-22T09:30:47Z</creationDateTime>\n<creationDateTime>2019-02-22T09:30:47Z</creationDateTime>\n<creationDateTime>2019-02-22T09:30:47Z</creationDateTime>\n<creationDateTime>2019-02-22T09:30:47Z</creationDateTime>\n<creationDateTime>2019-02-22T09:30:47Z</creationDateTime>\n<creationDateTime>2019-02-22T09:30:47Z</creationDateTime>\n  <documentStatusCode>ORIGINAL</documentStatusCode>\n  <documentActionCode>ADD</documentActionCode>\n  <itemIdentification>\n    <entityIdentification>HM0108775015187006</entityIdentification>\n  </itemIdentification>\n<tradeItemIdentification>\n    <gtin>00000000000000</gtin>\n  </tradeItemIdentification>\n  <description languageCode=\"en\" descriptionType=\"Short\">S-TOP BL XL</description>\n  <description languageCode=\"en\" descriptionType=\"Long\">STRAP TOP BLACK XL</description>\n  <countryOfOrigin>BD</countryOfOrigin>\n  <tradeItemBaseUnitOfMeasure>EA</tradeItemBaseUnitOfMeasure>\n  <itemHierarchyInformation>\n    <hierarchyLevelIdentifier>SKU</hierarchyLevelIdentifier>\n    <ancestry>\n      <hierarchyLevelIdentifier>OPTION</hierarchyLevelIdentifier>\n      <memberIdentifier>HM0108775015187</memberIdentifier>\n    </ancestry>\n  </itemHierarchyInformation>\n  <tradeItemMeasurements>\n    <size>\n      <descriptiveSize languageCode=\"en\">XL</descriptiveSize>\n      <sizeCode sizeCodeListCode=\"2\">6</sizeCode>\n</size>\n</tradeItemMeasurements>\n</item>",
"Number": "1"
      }  
  ]') as doc From Dual)  
  Select Item_Identification ,  
        Item_Document,
        Doc_Seqno   
  From  json_table( (Select Doc From Json) , '$[*]'
                Columns (  Item_Identification Path  '$.Identifier',
                          Item_Document      Path '$.Item_Document',
                          Doc_Seqno          Path '$.Number'    
                        )      )

错误消息是：

  

ORA-01704：字符串文字太长
     01704. 00000-“字符串文字太长”
     *原因：字符串文字长于4000个字符。
     *措施：使用最多4000个字符的字符串文字。只能使用绑定变量输入更长的值。