How to update multiple rows in vertica based on a set of different ids?
I am trying to update multiple ids in vertica based on a set of ids but the MERGE command is taking lot of time (around 1 hour) for merging a few thousand entries . Is it better to execute UPDATE a thousand times instead of a MERGE?
vertica
asked Nov 13 '18 at 4:29
Ranjan
223
add a comment |
I am trying to update multiple ids in vertica based on a set of ids but the MERGE command is taking lot of time (around 1 hour) for merging a few thousand entries . Is it better to execute UPDATE a thousand times instead of a MERGE?
vertica
asked Nov 13 '18 at 4:29
Ranjan
223
1
Can you post: 1. the MERGE command you're using; 2. the output ofSELECT EXPORT_OBJECTS('','<yourschema>.<yourtable_to_be_merged>',FALSE);; 3. the same for the MERGE input table? I have a strong suspicion that your physical design does not sort on the ID that you use for the MERGE ..
– marcothesane
Nov 13 '18 at 9:05
add a comment |
I am trying to update multiple ids in vertica based on a set of ids but the MERGE command is taking lot of time (around 1 hour) for merging a few thousand entries . Is it better to execute UPDATE a thousand times instead of a MERGE?
vertica
asked Nov 13 '18 at 4:29
Ranjan
223
I am trying to update multiple ids in vertica based on a set of ids but the MERGE command is taking lot of time (around 1 hour) for merging a few thousand entries . Is it better to execute UPDATE a thousand times instead of a MERGE?
vertica
vertica
asked Nov 13 '18 at 4:29
Ranjan
223
asked Nov 13 '18 at 4:29
Ranjan
223
asked Nov 13 '18 at 4:29
Ranjan
223
asked Nov 13 '18 at 4:29
Ranjan
223
asked Nov 13 '18 at 4:29
Ranjan
223
223
1
Can you post: 1. the MERGE command you're using; 2. the output ofSELECT EXPORT_OBJECTS('','<yourschema>.<yourtable_to_be_merged>',FALSE);; 3. the same for the MERGE input table? I have a strong suspicion that your physical design does not sort on the ID that you use for the MERGE ..
– marcothesane
Nov 13 '18 at 9:05
add a comment |
1
Can you post: 1. the MERGE command you're using; 2. the output ofSELECT EXPORT_OBJECTS('','<yourschema>.<yourtable_to_be_merged>',FALSE);; 3. the same for the MERGE input table? I have a strong suspicion that your physical design does not sort on the ID that you use for the MERGE ..
– marcothesane
Nov 13 '18 at 9:05
1
1
Can you post: 1. the MERGE command you're using; 2. the output of
SELECT EXPORT_OBJECTS('','<yourschema>.<yourtable_to_be_merged>',FALSE);; 3. the same for the MERGE input table? I have a strong suspicion that your physical design does not sort on the ID that you use for the MERGE ..– marcothesane
Nov 13 '18 at 9:05
Can you post: 1. the MERGE command you're using; 2. the output of
SELECT EXPORT_OBJECTS('','<yourschema>.<yourtable_to_be_merged>',FALSE);; 3. the same for the MERGE input table? I have a strong suspicion that your physical design does not sort on the ID that you use for the MERGE ..– marcothesane
Nov 13 '18 at 9:05
add a comment |
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1
Can you post: 1. the MERGE command you're using; 2. the output of
SELECT EXPORT_OBJECTS('','<yourschema>.<yourtable_to_be_merged>',FALSE);; 3. the same for the MERGE input table? I have a strong suspicion that your physical design does not sort on the ID that you use for the MERGE ..– marcothesane
Nov 13 '18 at 9:05