The AWS Documentation website is getting a new look!
Try it now and let us know what you think. Switch to the new look >>
You can return to the original look by selecting English in the language selector above.
Try it now and let us know what you think. Switch to the new look >>
You can return to the original look by selecting English in the language selector above.
SVL_COMPILE
Records compile time and location for each query segment of queries.
SVL_COMPILE is visible to all users.
Table Columns
| Column Name | Data Type | Description |
|---|---|---|
| userid | integer | ID of the user who generated the entry. |
| xid | bigint | Transaction ID associated with the statement. |
| pid | integer | Process ID associated with the statement. |
| query | integer | Query ID. Can be used to join various other system tables and views. |
| segment | integer | The query segment to be compiled. |
| locus | integer | Location where the segment executes.
1 if on a compute node and
2 if on the leader node.
|
| starttime | timestamp | Time in UTC that the compile started. |
| endtime | timestamp | Time in UTC that the compile ended. |
| compile | integer | 0 if the compile was
reused, 1 if the segment was
compiled.
|
Sample Queries
In this example, queries 35878 and 35879 executed the same SQL statement. The
compile column for query 35878 shows 1 for four query segments, which
indicates that the segments were compiled. Query 35879 shows 0 in the
compile column for every segment, indicating that the segments did not need to be
compiled again.
select userid, xid, pid, query, segment, locus, datediff(ms, starttime, endtime) as duration, compile from svl_compile where query = 35878 or query = 35879 order by query, segment; userid | xid | pid | query | segment | locus | duration | compile --------+--------+-------+-------+---------+-------+----------+--------- 100 | 112780 | 23028 | 35878 | 0 | 1 | 0 | 0 100 | 112780 | 23028 | 35878 | 1 | 1 | 0 | 0 100 | 112780 | 23028 | 35878 | 2 | 1 | 0 | 0 100 | 112780 | 23028 | 35878 | 3 | 1 | 0 | 0 100 | 112780 | 23028 | 35878 | 4 | 1 | 0 | 0 100 | 112780 | 23028 | 35878 | 5 | 1 | 0 | 0 100 | 112780 | 23028 | 35878 | 6 | 1 | 1380 | 1 100 | 112780 | 23028 | 35878 | 7 | 1 | 1085 | 1 100 | 112780 | 23028 | 35878 | 8 | 1 | 1197 | 1 100 | 112780 | 23028 | 35878 | 9 | 2 | 905 | 1 100 | 112782 | 23028 | 35879 | 0 | 1 | 0 | 0 100 | 112782 | 23028 | 35879 | 1 | 1 | 0 | 0 100 | 112782 | 23028 | 35879 | 2 | 1 | 0 | 0 100 | 112782 | 23028 | 35879 | 3 | 1 | 0 | 0 100 | 112782 | 23028 | 35879 | 4 | 1 | 0 | 0 100 | 112782 | 23028 | 35879 | 5 | 1 | 0 | 0 100 | 112782 | 23028 | 35879 | 6 | 1 | 0 | 0 100 | 112782 | 23028 | 35879 | 7 | 1 | 0 | 0 100 | 112782 | 23028 | 35879 | 8 | 1 | 0 | 0 100 | 112782 | 23028 | 35879 | 9 | 2 | 0 | 0 (20 rows)
