Download of CSV using Browse point (don't get no data found error)
HelloI use procedure below to download CSV in my table.
CSV is to have null values in some places ex: 1,.
2,0.999
3,
4,0.696
below the procedure works fine when I am downloading as CSV: 1.0
2,0.999
3.0
4,0.696.
My table is seen as two columns, and I get no data found error when downloading a CSV of null values.
I went through import data in Excel to the database table but no use...
Please help me on this.
Procedure
===========
DECLARE
v_blob_data BLOB;
v_blob_len NUMBER;
v_position NUMBER;
v_raw_chunk RAW(10000);
v_char CHAR(1);
c_chunk_len number := 1;
v_line VARCHAR2 (32767) := NULL;
v_data_array wwv_flow_global.vc_arr2;
BEGIN
-- Read data from wwv_flow_files
select blob_content into v_blob_data from wwv_flow_files
where UPDATED_BY = (select max(UPDATED_BY) from wwv_flow_files where UPDATED_BY = :APP_USER)
AND id = (select max(id) from wwv_flow_files where updated_by = :APP_USER);
v_blob_len := dbms_lob.getlength(v_blob_data);
v_position := 1;
-- Read and convert binary to char
WHILE ( v_position <= v_blob_len ) LOOP
v_raw_chunk := dbms_lob.substr(v_blob_data,c_chunk_len,v_position);
v_char := chr(hex_to_decimal(rawtohex(v_raw_chunk)));
v_line := v_line || v_char;
v_position := v_position + c_chunk_len;
-- When a whole line is retrieved
IF v_char = CHR(10) THEN
-- Convert comma to : to use wwv_flow_utilities
v_line := substr(v_line, 1, length(v_line)-2);
v_line := REPLACE (v_line, ',', ':');
-- Convert each column separated by : into array of data
v_data_array := wwv_flow_utilities.STRING_to_table (v_line);
-- Insert data into target table
EXECUTE IMMEDIATE 'insert into table_name@Schema1 (col1,col2)
values (:1,:2)'
USING
v_data_array(1),
v_data_array(2);
-- Clear out
v_line := NULL;
END IF;
END LOOP;
END;
concerningChauvet
Published by: Chaumont on 26 September 2012 10:52
Published by: Chaumont Sep 26, 2012 22:25
Published by: Chaumont on 27 September 2012 01:58
Chambers,
You can use wwv_flow_utilities.array_element to avoid any no_data_found. The function does not raise any errors. For example, for the line which only have a value of table when you wait 2, it can be useful.
EXECUTE IMMEDIATE 'insert into table_name@Schema1 (col1,col2)
values (:1,:2)'
USING
wwv_flow_utilities.array_element(v_data_array,1),
wwv_flow_utilities.array_element(v_data_array,2);
Kind regards
Christina
Tags: Database
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