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Overview
| Comment: | Fix WITHOUT ROWID table handing in sqlite3_analyzer. |
|---|---|
| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | trunk |
| Files: | files | file ages | folders |
| SHA1: |
937e0fe7008c0f76b6a584180df9a945 |
| User & Date: | dan 2015-02-09 17:46:11 |
Context
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2015-02-09
| ||
| 18:28 | Propagate COLLATE operators upward through function calls and CASE operations. And do not flatten an aggregate subquery into a query that uses other subqueries. Fixes for tickets [ca0d20b6cdddec5] and [2f7170d73bf9], respectively. (check-in: 24e78b8d user: drh tags: trunk) | |
| 17:46 | Fix WITHOUT ROWID table handing in sqlite3_analyzer. (check-in: 937e0fe7 user: dan tags: trunk) | |
| 14:07 | Rename the internal "EP_Constant" bitmask to a less misleading "EP_ConstFunc". (check-in: 4ef7cece user: drh tags: trunk) | |
Changes
Changes to tool/spaceanal.tcl.
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# Run this TCL script using "testfixture" in order get a report that shows
# how much disk space is used by a particular data to actually store data
# versus how much space is unused.
#
if {[catch {
# Get the name of the database to analyze
#
proc usage {} {
set argv0 [file rootname [file tail [info nameofexecutable]]]
puts stderr "Usage: $argv0 database-name"
exit 1
}
................................................................................
set isCompressed 0
set compressOverhead 0
set sql { SELECT name, tbl_name FROM sqlite_master WHERE rootpage>0 }
foreach {name tblname} [concat sqlite_master sqlite_master [db eval $sql]] {
set is_index [expr {$name!=$tblname}]
db eval {
SELECT
sum(ncell) AS nentry,
sum(isleaf(pagetype, $is_index) * ncell) AS leaf_entries,
sum(payload) AS payload,
sum(isoverflow(pagetype, $is_index) * payload) AS ovfl_payload,
sum(path LIKE '%+000000') AS ovfl_cnt,
max(mx_payload) AS mx_payload,
sum(isinternal(pagetype, $is_index)) AS int_pages,
sum(isleaf(pagetype, $is_index)) AS leaf_pages,
sum(isoverflow(pagetype, $is_index)) AS ovfl_pages,
sum(isinternal(pagetype, $is_index) * unused) AS int_unused,
sum(isleaf(pagetype, $is_index) * unused) AS leaf_unused,
sum(isoverflow(pagetype, $is_index) * unused) AS ovfl_unused,
sum(pgsize) AS compressed_size
FROM temp.dbstat WHERE name = $name
} break
set total_pages [expr {$leaf_pages+$int_pages+$ovfl_pages}]
set storage [expr {$total_pages*$pageSize}]
if {!$isCompressed && $storage>$compressed_size} {
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# Run this TCL script using "testfixture" in order get a report that shows
# how much disk space is used by a particular data to actually store data
# versus how much space is unused.
#
if {[catch {
# Argument $tname is the name of a table within the database opened by
# database handle [db]. Return true if it is a WITHOUT ROWID table, or
# false otherwise.
#
proc is_without_rowid {tname} {
set t [string map {' ''} $tname]
db eval "PRAGMA index_list = '$t'" o {
if {$o(origin) == "pk"} {
set n $o(name)
if {0==[db one { SELECT count(*) FROM sqlite_master WHERE name=$n }]} {
return 1
}
}
}
return 0
}
# Get the name of the database to analyze
#
proc usage {} {
set argv0 [file rootname [file tail [info nameofexecutable]]]
puts stderr "Usage: $argv0 database-name"
exit 1
}
................................................................................
set isCompressed 0
set compressOverhead 0
set sql { SELECT name, tbl_name FROM sqlite_master WHERE rootpage>0 }
foreach {name tblname} [concat sqlite_master sqlite_master [db eval $sql]] {
set is_index [expr {$name!=$tblname}]
set idx_btree [expr {$is_index || [is_without_rowid $name]}]
db eval {
SELECT
sum(ncell) AS nentry,
sum(isleaf(pagetype, $idx_btree) * ncell) AS leaf_entries,
sum(payload) AS payload,
sum(isoverflow(pagetype, $idx_btree) * payload) AS ovfl_payload,
sum(path LIKE '%+000000') AS ovfl_cnt,
max(mx_payload) AS mx_payload,
sum(isinternal(pagetype, $idx_btree)) AS int_pages,
sum(isleaf(pagetype, $idx_btree)) AS leaf_pages,
sum(isoverflow(pagetype, $idx_btree)) AS ovfl_pages,
sum(isinternal(pagetype, $idx_btree) * unused) AS int_unused,
sum(isleaf(pagetype, $idx_btree) * unused) AS leaf_unused,
sum(isoverflow(pagetype, $idx_btree) * unused) AS ovfl_unused,
sum(pgsize) AS compressed_size
FROM temp.dbstat WHERE name = $name
} break
set total_pages [expr {$leaf_pages+$int_pages+$ovfl_pages}]
set storage [expr {$total_pages*$pageSize}]
if {!$isCompressed && $storage>$compressed_size} {
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