此错误通常是由过时的表信息和正在删除目标表（并可能重新创建同名的新表）的其他进程引起的。
如果您正在使用Amazon Redshift Spectrum提取数据,您可以使用 MAXFILESIZE 参数,将文件保存为150MB大小。与上面所提到的技巧类似,拥有许多大小相同的文件可以确保 Redshift Spectrum 可以并行地最大化完成任务 7. 使用 Redshift Spectrum 进行 Ad hoc 的 ETL 处理 ...
Use the smallest possible column size Use date/time data types for date columns Best practices for loading data Learn how to load data Use a COPY command to load data Use a single COPY command Loading data files Compressing your data files Verify data files before and after a load Use a ...
我在试着跑 alter table schema_name.table_name ALTER COLUMN column_name TYPE varchar(256) 在Amazon Redshift中,但我得到了这个错误: SQL错误500310:亚马逊无效操作:无法更改关系"table_name“的列"column_name”,目标列大小256应大于或等于当前最大列大小879; 我已经试过了 update schema_name.table_...
如果您正在使用Amazon Redshift Spectrum提取数据,您可以使用 MAXFILESIZE 参数,将文件保存为150MB大小。与上面所提到的技巧类似,拥有许多大小相同的文件可以确保 Redshift Spectrum 可以并行地最大化完成任务 7. 使用 Redshift Spectrum 进行 Ad hoc 的 ETL 处理 ...
table tbl_rows size diststyle sortkey1 sortkey_num encoded region 5 30 AUTO(ALL) AUTO(SORTKEY) 0 Y, AUTO(ENCODE) nation 25 35 AUTO(ALL) AUTO(SORTKEY) 0 Y, AUTO(ENCODE) supplier 300000000 25040 AUTO(EVEN) AUTO(SORTKEY) 0 Y, AUTO(ENCODE) part 6000000000 316518 ...
Understanding your total data volume can lead you to the best cost/performance combination of node type and cluster size. Keep operational data in Redshift. This is the most current and frequently-queried data. Redshift stores data in tables and enforces schema-on-write, so using its native ...
UnifiedFilterSize 3.4 ProgressiveRenderingEnabled false MotionBlurEnabled true UnifiedFilterType RS_AAFILTER_MITCHELL To list the render options, use -listrenderoptions -gpu followed by the device ordinal N enables that GPU for rendering For example, to render scene 'test.rs' with the first two GPU...
I wonder are there any way to get table access history in Redshift cluster? Our cluster has a lot of tables and it is costing us a lot. I would like to discover what specific tables have not been accessed for a given period and then I would drop those tables. Are there any ways to...
Amazon Redshift doesn't take file size into account when dividing the workload. Split your load data files so that the files are about equal size, between 1 MB and 1 GB after compression. Update table statistics Amazon Redshift uses a cost-based query optimizer to choose the optimum executi...