I have the extension compiled in. When a database does not exist I get:
SQLite version 3.27.0 2018-12-10 01:48:29
Enter ".help" for usage hints.
Connected to a transient in-memory database.
Use ".open FILENAME" to reopen on a persistent database.
sqlite> select * from sqlite_btreeinfo;
Error: not an error
However, when a database is loaded is works fine:
sqlite> .open tz.db
sqlite> select * from sqlite_btreeinfo;
table|sqlite_master|sqlite_master|1||1|23|1|1|
table|sqlite_stat1|sqlite_stat1|2|CREATE TABLE
sqlite_stat1(tbl,idx,stat)|1|16|1|1|
table|sqlite_stat4|sqlite_stat4|3|CREATE TABLE
sqlite_stat4(tbl,idx,neq,nlt,ndlt,sample)|1|1|1|1|
table|tz_geopoly_rowid|tz_geopoly_rowid|4|CREATE TABLE "tz_geopoly_rowid"(rowid
INTEGER PRIMARY KEY,nodeno,a0,a1)|1|2028|507|2|
table|tz_geopoly_node|tz_geopoly_node|5|CREATE TABLE "tz_geopoly_node"(nodeno
INTEGER PRIMARY KEY,data)|1|44|11|2|
table|tz_geopoly_parent|tz_geopoly_parent|6|CREATE TABLE
"tz_geopoly_parent"(nodeno INTEGER PRIMARY KEY,parentnode)|1|33|1|1|
table|TZ_Version|TZ_Version|7|CREATE TABLE TZ_Version
(
Version text collate nocase,
PIPVersion text collate nocase
)|1|2|1|1|
table|TZ_Countries|TZ_Countries|8|CREATE TABLE TZ_Countries
(
Code text not null collate nocase primary key,
Country text not null collate nocase unique
) WITHOUT ROWID|0|34|2|2|
index|sqlite_autoindex_TZ_Countries_2|TZ_Countries|9||0|32|2|2|
table|TZ_Zones|TZ_Zones|10|CREATE TABLE TZ_Zones
(
ID INTEGER PRIMARY KEY,
Country_Code text collate nocase references TZ_Countries(Code),
Area text collate nocase,
Location text collate nocase,
City text collate nocase,
Zone text not null collate nocase unique
)|1|658|7|2|
index|sqlite_autoindex_TZ_Zones_1|TZ_Zones|11||0|720|4|2|
table|TZ_ZoneData|TZ_ZoneData|12|CREATE TABLE TZ_ZoneData
(
Zone_ID integer not null references TZ_Zones(ID),
Abbreviation text collate nocase not null,
StartTime integer not null,
Offset integer not null,
isDST integer not null
)|1|35088|204|2|
index|TZ_Country|TZ_Countries|13|CREATE INDEX TZ_Country on TZ_Countries
(Country, Code)|0|32|2|2|
index|TZ_ZonesCountry|TZ_Zones|14|CREATE INDEX TZ_ZonesCountry on TZ_Zones
(Country_Code)|0|210|2|2|
index|TZ_ZonesArea|TZ_Zones|15|CREATE INDEX TZ_ZonesArea on TZ_Zones
(Area)|0|508|2|2|
index|TZ_ZonesLocation|TZ_Zones|16|CREATE INDEX TZ_ZonesLocation on TZ_Zones
(Location)|0|774|3|2|
index|TZ_ZonesCity|TZ_Zones|17|CREATE INDEX TZ_ZonesCity on TZ_Zones
(City)|0|438|2|2|
index|TZ_ZoneDataID|TZ_ZoneData|18|CREATE INDEX TZ_ZoneDataID on TZ_ZoneData
(Zone_ID)|0|36401|89|2|
index|TZ_ZoneStart|TZ_ZoneData|19|CREATE INDEX TZ_ZoneStart on TZ_ZoneData
(Zone_ID, StartTime, Offset, Abbreviation)|0|14616|84|3|
index|TZ_ZoneOffset|TZ_ZoneData|20|CREATE INDEX TZ_ZoneOffset on TZ_ZoneData
(Zone_ID, StartTime + Offset, Offset)|0|35903|161|2|
sqlite>
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>-----Original Message-----
>From: sqlite-users [mailto:sqlite-users-
>boun...@mailinglists.sqlite.org] On Behalf Of Wout Mertens
>Sent: Wednesday, 12 December, 2018 13:41
>To: SQLite mailing list
>Subject: [sqlite] sqlite_btreeinfo
>
>I can't figure out how to get access to the sqlite_btreeinfo vtable
>that
>was added in 3.22 :-( The only documentation is the C file and there
>doesn't seem to be a compile flag for it.
>
>I went and downloaded the file from
>https://sqlite.org/src/artifact/4f0ebf278f46e68e, then compiled it on
>on
>macOS with
>
>$ gcc -g -fPIC -dynamiclib btreeinfo.c -o btreeinfo.dylib
>btreeinfo.c:414:5: warning: excess elements in struct initializer
> 0 /* xShadowName */
> ^
>1 warning generated.
>
>and tried loading it but:
>
>sqlite> .load btreeinfo.dylib
>sqlite> select * from sqlite_btreeinfo;
>Error: no such table: sqlite_btreeinfo
>
>:-(
>
>Wout.
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