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Amazon Redshift
Database Developer Guide (API Version 2012-12-01)

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.

Copy
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)