clob

问题 I have a table which includes a CLOB field with values consisting of lines of comma-separated values. In the output I want a row for each these lines which start with a particular value. I also want to extract some of the comma-separated values performantly. Input table (3 rows): id my_clob 001 500,aaa,bbb 500,ccc,ddd 480,1,2,bad 500,eee,fff 002 777,0,0,bad 003 500,yyy,zzz Target output (4 rows): id my_clob line_num line second_val 001 500,aaa,bbb 1 500,aaa,bbb aaa 500,ccc,ddd 480,1,2,bad 500

问题 I'm working on a C++ application with Oracle as database and trying to fetch thousands of records with CLOB datatype. Been searching the net on how to prefetch a CLOB datatype in OCCI but always see this "Prefetching is not in effect if LONG, LOB or Opaque Type columns (such as XMLType) are part of the query." Is there a way in OCCI in order to prefetch CLOB or are there other alternative solutions to improve the time spent to fetch CLOB data? Thanks for the help. 回答1: There is a way to do

问题 I'm working on a C++ application with Oracle as database and trying to fetch thousands of records with CLOB datatype. Been searching the net on how to prefetch a CLOB datatype in OCCI but always see this "Prefetching is not in effect if LONG, LOB or Opaque Type columns (such as XMLType) are part of the query." Is there a way in OCCI in order to prefetch CLOB or are there other alternative solutions to improve the time spent to fetch CLOB data? Thanks for the help. 回答1: There is a way to do

问题 How to completely retrieve large clob data from a table using sqlplus to the stdout? There is a way to get it completely using language specific DB APIs. But when I try to get it using purely sqlplus, I've faced several problems such as, Output buffer is too small (4000 is max) Character string buffer too small Since oracle clob fields can contain 4GB (max) of data, is there any correct way to get the complete data chunk using sqlplus? Can I download it as a file? I hope that the question is

问题 I am trying to run the below query which returns a DataTable object in C#. select TO_CLOB(BLOB) FROM TestBlobData where BSIZE=5000 When I try to extract the value out of datatable object, a junk value is seen. DataTable dataTable = RunQuery(QueryMentionedAbove); var str = dataTable.Rows[0]["BLOB"].ToString(); When I look at Str , I could not see the converted string. The BLOB is actually a JSON string. I cannot use TO_CHAR or TO_NCHAR because my blob size will be greater than 4000. My

问题 SELECT REGEXP_SUBSTR(clb, '[^~]+', 1, level) FROM ( SELECT DBMS_LOB.SUBSTR( to_clob('40903~41096~40944~41109~40895~41087~40898~41091~40961~41115~40906~41103~40958~41112~40941~41106~40964~41121~40982~41133~40968~41118~40985~41139~40974~41127~40988~41136~40971~41124~40979~41130~40994~41146~41001~41152~40997~41149~40912~41100~40991~41142~41422~41562~41437~41570~41416~41560~41419~41546~41443~41574~41428~41564~41440~41572~41431~41568~41446~41576~41479~41526~41449~41578~41465~41530~41476~41519

问题 I have a table (AKADMIN) with an XMLTYPE column which name is XML. I would like to use the getClobVal() with this column. select t.xml.getClobVal() /**/ , t.xml.getClobVal() -- , t.xml.getClobVal() as clobval , t.xml.getClobVal() from akadmin t where ROWID = 'AAAQc6AAIAAAADDAAA' ; In the resultset the first 4 column give CLOB type, but the fifth column XMLTYPE. I have to type any comment or alias after getClobVal() to correct (CLOB) type of the result. Why? Another issue, when I leave the

问题 I have a table (AKADMIN) with an XMLTYPE column which name is XML. I would like to use the getClobVal() with this column. select t.xml.getClobVal() /**/ , t.xml.getClobVal() -- , t.xml.getClobVal() as clobval , t.xml.getClobVal() from akadmin t where ROWID = 'AAAQc6AAIAAAADDAAA' ; In the resultset the first 4 column give CLOB type, but the fifth column XMLTYPE. I have to type any comment or alias after getClobVal() to correct (CLOB) type of the result. Why? Another issue, when I leave the

来源： https://stackoverflow.com/questions/64352413/cant-enqueue-large-text-messages-onto-oracle-aq-via-jms-client-ora-00942-tab

来源： https://stackoverflow.com/questions/23419567/simplejdbccall-calling-pl-sql-procedure-ora-22922-nonexistent-lob-value