Invalid operation: Load into table ‘sources_ orderdata‘ failed. Check ‘stl_ load_ errors‘ system table

aws Run today copy The task times are as follows ：
[XX000][500310] Amazon Invalid operation: Load into table ‘sources_orderdata’ failed. Check ‘stl_load_errors’ system table for details.;
What is this? ？ Why don't you just tell me the reason , This is it. aws_redshift The wonder , You should find his information by yourself .
solve ：
1. Query error message

SELECT * FROM STL_LOAD_ERRORS where filename like '% Just you yourself? s3 File path %'  order by starttime desc ;

2. Refer to the problem table to get the specific reasons
The reason for my error is that the loading data is too long , I'm behind my copy The command added TRUNCATECOLUMNS Avoid length problems , Truncate the data in the column to an appropriate number of characters, which conforms to the column specification . Only for those with VARCHAR or CHAR The column and size of the data type are 4 MB Or below

This is the official website address ：
https://docs.aws.amazon.com/zh_cn/redshift/latest/dg/r_Load_Error_Reference.html