diff options
| -rwxr-xr-x | contrib/findoidjoins/make_oidjoins_check | 5 | ||||
| -rw-r--r-- | doc/TODO | 13 |
2 files changed, 11 insertions, 7 deletions
diff --git a/contrib/findoidjoins/make_oidjoins_check b/contrib/findoidjoins/make_oidjoins_check index 508d435c6d7..b6a720a5048 100755 --- a/contrib/findoidjoins/make_oidjoins_check +++ b/contrib/findoidjoins/make_oidjoins_check @@ -10,7 +10,8 @@ # Caution: you may need to use GNU awk. AWK=${AWK:-awk} -TMP="/tmp/$$" +TMP="${TMPDIR:-/tmp}/make_oidjoins_check.$$" +trap "rm -rf $TMP" 0 1 2 3 15 # Create a temporary directory with the proper permissions so no one can # intercept our temporary files and cause a security breach. @@ -23,8 +24,6 @@ fi umask "$OMASK" unset OMASK -trap "rm -rf $TMP" 0 1 2 3 15 - INPUTFILE="$TMP/a" DUPSFILE="$TMP/b" NONDUPSFILE="$TMP/c" @@ -250,12 +250,17 @@ Indexes order. Another method would be to sort heap ctids matching the index before accessing the heap rows. -* Use bitmaps to combine existing indexes [performance] +* Allow the creation of bitmap indexes which can be quickly combined + with other bitmap indexes - Bitmap indexes allow single indexed columns to be combined to - dynamically create a composite index to match a specific query. Each - index is a bitmap, and the bitmaps are AND'ed or OR'ed to be combined. + Bitmap indexes index single columns and can be combined with other bitmap + indexes to dynamically create a composite index to match a specific query. + Each index is a bitmap, and the bitmaps are bitwise AND'ed or OR'ed to be + combined. +* Allow non-bitmap indexes to be combined + + Do loUse bitmaps to combine non-bitmap indexes * Allow use of indexes to search for NULLs One solution is to create a partial index on an IS NULL expression. |