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-rw-r--r--src/sqliteInt.h8
1 files changed, 8 insertions, 0 deletions
diff --git a/src/sqliteInt.h b/src/sqliteInt.h
index 024029429..da1a3386c 100644
--- a/src/sqliteInt.h
+++ b/src/sqliteInt.h
@@ -3190,6 +3190,14 @@ struct Select {
** SRT_DistQueue Store results in priority queue pDest->iSDParm only if
** the same record has never been stored before. The
** index at pDest->iSDParm+1 hold all prior stores.
+**
+** SRT_Upfrom Store results in the temporary table already opened by
+** pDest->iSDParm. If (pDest->iSDParm<0), then the temp
+** table is an intkey table - in this case the first
+** column returned by the SELECT is used as the integer
+** key. If (pDest->iSDParm>0), then the table is an index
+** table. (pDest->iSDParm) is the number of key columns in
+** each index record in this case.
*/
#define SRT_Union 1 /* Store result as keys in an index */
#define SRT_Except 2 /* Remove result from a UNION index */