turso/docs/sqlite-compat.md

SQLite Compatibility

This document describes the SQLite compatibility status of Limbo:

• SQL statements
• SQL functions
• SQLite API

SQL statements

Statement	Status	Comment
ALTER TABLE	No
ANALYZE	No
ATTACH DATABASE	No
BEGIN TRANSACTION	No
COMMIT TRANSACTION	No
CREATE INDEX	No
CREATE TABLE	No
CREATE TRIGGER	No
CREATE VIEW	No
CREATE VIRTUAL TABLE	No
DELETE	No
DETACH DATABASE	No
DROP INDEX	No
DROP TABLE	No
DROP TRIGGER	No
DROP VIEW	No
END TRANSACTION	No
EXPLAIN	No
INDEXED BY	No
INSERT	No
ON CONFLICT clause	No
PRAGMA	Partial
PRAGMA cache_size	Yes
REINDEX	No
RELEASE SAVEPOINT	No
REPLACE	No
RETURNING clause	No
ROLLBACK TRANSACTION	No
SAVEPOINT	No
SELECT	Partial
SELECT ... WHERE	No
SELECT ... LIMIT	Yes
SELECT ... ORDER BY	No
SELECT ... GROUP BY	No
SELECT ... JOIN	No
UPDATE	No
UPSERT	No
VACUUM	No
WITH clause	No

SQL functions

Scalar functions

Function	Status	Comment
abs(X)	No
changes()	No
char(X1,X2,...,XN)	No
coalesce(X,Y,...)	No
concat(X,...)	No
concat_ws(SEP,X,...)	No
format(FORMAT,...)	No
glob(X,Y)	No
hex(X)	No
ifnull(X,Y)	No
iif(X,Y,Z)	No
instr(X,Y)	No
last_insert_rowid()	No
length(X)	No
like(X,Y)	No
like(X,Y,Z)	No
likelihood(X,Y)	No
likely(X)	No
load_extension(X)	No
load_extension(X,Y)	No
lower(X)	No
ltrim(X)	No
ltrim(X,Y)	No
max(X,Y,...)	No
min(X,Y,...)	No
nullif(X,Y)	No
octet_length(X)	No
printf(FORMAT,...)	No
quote(X)	No
random()	No
randomblob(N)	No
replace(X,Y,Z)	No
round(X)	No
round(X,Y)	No
rtrim(X)	No
rtrim(X,Y)	No
sign(X)	No
soundex(X)	No
sqlite_compileoption_get(N)	No
sqlite_compileoption_used(X)	No
sqlite_offset(X)	No
sqlite_source_id()	No
sqlite_version()	No
substr(X,Y,Z)	No
substr(X,Y)	No
substring(X,Y,Z)	No
substring(X,Y)	No
total_changes()	No
trim(X)	No
trim(X,Y)	No
typeof(X)	No
unhex(X)	No
unhex(X,Y)	No
unicode(X)	No
unlikely(X)	No
upper(X)	No
zeroblob(N)	No

Aggregate functions

Function	Status	Comment
avg(X)	Yes
count()	Yes
count(*)	Yes
group_concat(X)	No
group_concat(X,Y)	No
string_agg(X,Y)	No
max(X)	Yes
min(X)	No
sum(X)	Yes
total(X)	No

Date and time functions

Function	Status	Comment
date()	No
time()	No
datetime()	No
julianday()	No
unixepoch()	No
strftime()	No
timediff()	No

SQLite API

Interface	Status	Comment
sqlite3_open	Partial
sqlite3_close	Yes
sqlite3_prepare	Partial
sqlite3_finalize	Yes
sqlite3_step	Yes
sqlite3_column_text	Yes

SQLite VDBE opcodes

Opcode	Status
Add	No
AddImm	No
Affinity	No
AggFinal	Yes
AggStep	Yes
And	No
AutoCommit	No
BitAnd	No
BitNot	No
BitOr	No
Blob	No
Checkpoint	No
Clear	No
Close	No
CollSeq	No
Column	Yes
Compare	No
Concat	No
Copy	No
Count	No
CreateIndex	No
CreateTable	No
Delete	No
Destroy	No
Divide	No
DropIndex	No
DropTable	No
DropTrigger	No
Eq	No
Expire	No
Explain	No
FkCounter	No
FkIfZero	No
Found	No
Function	No
Ge	No
Gosub	No
Goto	Yes
Gt	No
Halt	Yes
HaltIfNull	No
IdxDelete	No
IdxGE	No
IdxInsert	No
IdxLT	No
IdxRowid	No
If	No
IfNeg	No
IfNot	No
IfPos	No
IfZero	No
IncrVacuum	No
Insert	No
InsertInt	No
Int64	No
Integer	Yes
IntegrityCk	No
IsNull	No
IsUnique	No
JournalMode	No
Jump	No
Last	No
Le	No
LoadAnalysis	No
Lt	No
MakeRecord	Yes
MaxPgcnt	No
MemMax	No
Move	No
Multiply	No
MustBeInt	No
Ne	No
NewRowid	No
Next	No
Noop	No
Not	No
NotExists	No
NotFound	No
NotNull	No
Null	No
NullRow	No
Once	No
OpenAutoindex	No
OpenEphemeral	No
OpenPseudo	Yes
OpenRead	Yes
OpenWrite	No
Or	No
Pagecount	No
Param	No
ParseSchema	No
Permutation	No
Prev	No
Program	No
ReadCookie	No
Real	Yes
RealAffinity	No
Remainder	No
ResetCount	No
ResultRow	Yes
Return	No
Rewind	Yes
RowData	No
RowKey	No
RowSetAdd	No
RowSetRead	No
RowSetTest	No
Rowid	Yes
SCopy	No
Savepoint	No
Seek	No
SeekGe	No
SeekGt	No
SeekLe	No
SeekLt	No
Sequence	No
SetCookie	No
ShiftLeft	No
ShiftRight	No
Sort	No
SorterCompare	No
SorterData	Yes
SorterInsert	Yes
SorterNext	Yes
SorterOpen	Yes
SorterSort	Yes
String	No
String8	Yes
Subtract	No
TableLock	No
ToBlob	No
ToInt	No
ToNumeric	No
ToReal	No
ToText	No
Trace	No
Transaction	No
VBegin	No
VColumn	No
VCreate	No
VDestroy	No
VFilter	No
VNext	No
VOpen	No
VRename	No
VUpdate	No
Vacuum	No
Variable	No
VerifyCookie	No
Yield	No