SVCS_COMPILE - Amazon Redshift

SVCS_COMPILE

Records compile time and location for each query segment of queries, including queries run on a scaling cluster as well as queries run on the main cluster.

Note

System views with the prefix SVCS provide details about queries on both the main and concurrency scaling clusters. The views are similar to the views with the prefix SVL except that the SVL views provide information only for queries run on the main cluster.

SVCS_COMPILE is visible to all users.

For information about SCL_COMPILE, see SVL_COMPILE.

Table columns

Column name Data type Description
userid integer The ID of the user who generated the entry.
xid bigint The transaction ID associated with the statement.
pid integer The process ID associated with the statement.
query integer The query ID. You can use this ID to join various other system tables and views.
segment integer The query segment to be compiled.
locus integer The location where the segment executes, 1 if on a compute node and 2 if on the leader node.
starttime timestamp The time in Universal Coordinated Time (UTC) that the compile started.
endtime timestamp The time in UTC that the compile ended.
compile integer A value that is 0 if the compile was reused and 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 svcs_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)