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312 lines
11 KiB
Markdown
312 lines
11 KiB
Markdown
# SQLite Compatibility
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This document describes the SQLite compatibility status of Limbo:
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* [SQL statements](#sql-statements)
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* [SQL functions](#sql-functions)
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* [SQLite API](#sqlite-api)
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## SQL statements
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| Statement | Status | Comment |
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|------------------------------|---------|---------|
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| ALTER TABLE | No | |
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| ANALYZE | No | |
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| ATTACH DATABASE | No | |
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| BEGIN TRANSACTION | No | |
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| COMMIT TRANSACTION | No | |
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| CREATE INDEX | No | |
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| CREATE TABLE | No | |
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| CREATE TRIGGER | No | |
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| CREATE VIEW | No | |
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| CREATE VIRTUAL TABLE | No | |
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| DELETE | No | |
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| DETACH DATABASE | No | |
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| DROP INDEX | No | |
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| DROP TABLE | No | |
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| DROP TRIGGER | No | |
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| DROP VIEW | No | |
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| END TRANSACTION | No | |
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| EXPLAIN | No | |
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| INDEXED BY | No | |
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| INSERT | No | |
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| ON CONFLICT clause | No | |
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| PRAGMA | Partial | |
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| PRAGMA cache_size | Yes | |
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| REINDEX | No | |
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| RELEASE SAVEPOINT | No | |
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| REPLACE | No | |
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| RETURNING clause | No | |
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| ROLLBACK TRANSACTION | No | |
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| SAVEPOINT | No | |
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| SELECT | Partial | |
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| SELECT ... WHERE | No | |
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| SELECT ... LIMIT | Yes | |
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| SELECT ... ORDER BY | No | |
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| SELECT ... GROUP BY | No | |
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| SELECT ... JOIN | No | |
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| UPDATE | No | |
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| UPSERT | No | |
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| VACUUM | No | |
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| WITH clause | No | |
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## SQL functions
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### Scalar functions
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| Function | Status | Comment |
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|------------------------------|---------|---------|
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| abs(X) | No | |
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| changes() | No | |
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| char(X1,X2,...,XN) | No | |
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| coalesce(X,Y,...) | No | |
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| concat(X,...) | No | |
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| concat_ws(SEP,X,...) | No | |
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| format(FORMAT,...) | No | |
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| glob(X,Y) | No | |
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| hex(X) | No | |
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| ifnull(X,Y) | No | |
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| iif(X,Y,Z) | No | |
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| instr(X,Y) | No | |
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| last_insert_rowid() | No | |
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| length(X) | No | |
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| like(X,Y) | No | |
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| like(X,Y,Z) | No | |
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| likelihood(X,Y) | No | |
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| likely(X) | No | |
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| load_extension(X) | No | |
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| load_extension(X,Y) | No | |
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| lower(X) | No | |
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| ltrim(X) | No | |
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| ltrim(X,Y) | No | |
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| max(X,Y,...) | No | |
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| min(X,Y,...) | No | |
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| nullif(X,Y) | No | |
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| octet_length(X) | No | |
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| printf(FORMAT,...) | No | |
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| quote(X) | No | |
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| random() | No | |
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| randomblob(N) | No | |
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| replace(X,Y,Z) | No | |
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| round(X) | No | |
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| round(X,Y) | No | |
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| rtrim(X) | No | |
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| rtrim(X,Y) | No | |
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| sign(X) | No | |
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| soundex(X) | No | |
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| sqlite_compileoption_get(N) | No | |
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| sqlite_compileoption_used(X) | No | |
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| sqlite_offset(X) | No | |
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| sqlite_source_id() | No | |
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| sqlite_version() | No | |
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| substr(X,Y,Z) | No | |
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| substr(X,Y) | No | |
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| substring(X,Y,Z) | No | |
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| substring(X,Y) | No | |
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| total_changes() | No | |
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| trim(X) | No | |
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| trim(X,Y) | No | |
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| typeof(X) | No | |
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| unhex(X) | No | |
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| unhex(X,Y) | No | |
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| unicode(X) | No | |
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| unlikely(X) | No | |
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| upper(X) | No | |
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| zeroblob(N) | No | |
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### Aggregate functions
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| Function | Status | Comment |
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|------------------------------|---------|---------|
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| avg(X) | Yes | |
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| count() | No | |
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| count(*) | No | |
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| group_concat(X) | No | |
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| group_concat(X,Y) | No | |
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| string_agg(X,Y) | No | |
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| max(X) | No | |
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| min(X) | No | |
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| sum(X) | Yes | |
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| total(X) | No | |
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### Date and time functions
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| Function | Status | Comment |
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|------------------------------|---------|---------|
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| date() | No | |
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| time() | No | |
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| datetime() | No | |
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| julianday() | No | |
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| unixepoch() | No | |
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| strftime() | No | |
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| timediff() | No | |
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## SQLite API
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| Interface | Status | Comment |
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|------------------------------|---------|---------|
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| sqlite3_open | Partial | |
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| sqlite3_close | Yes | |
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| sqlite3_prepare | Partial | |
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| sqlite3_finalize | Yes | |
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| sqlite3_step | Yes | |
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| sqlite3_column_text | Yes | |
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## SQLite VDBE opcodes
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| Opcode | Status |
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|---------------|--------|
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| Add | No |
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| AddImm | No |
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| Affinity | No |
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| AggFinal | Yes |
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| AggStep | Yes |
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| And | No |
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| AutoCommit | No |
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| BitAnd | No |
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| BitNot | No |
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| BitOr | No |
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| Blob | No |
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| Checkpoint | No |
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| Clear | No |
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| Close | No |
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| CollSeq | No |
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| Column | Yes |
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| Compare | No |
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| Concat | No |
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| Copy | No |
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| Count | No |
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| CreateIndex | No |
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| CreateTable | No |
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| Delete | No |
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| Destroy | No |
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| Divide | No |
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| DropIndex | No |
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| DropTable | No |
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| DropTrigger | No |
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| Eq | No |
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| Expire | No |
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| Explain | No |
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| FkCounter | No |
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| FkIfZero | No |
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| Found | No |
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| Function | No |
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| Ge | No |
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| Gosub | No |
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| Goto | Yes |
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| Gt | No |
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| Halt | Yes |
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| HaltIfNull | No |
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| IdxDelete | No |
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| IdxGE | No |
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| IdxInsert | No |
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| IdxLT | No |
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| IdxRowid | No |
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| If | No |
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| IfNeg | No |
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| IfNot | No |
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| IfPos | No |
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| IfZero | No |
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| IncrVacuum | No |
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| Insert | No |
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| InsertInt | No |
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| Int64 | No |
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| Integer | Yes |
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| IntegrityCk | No |
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| IsNull | No |
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| IsUnique | No |
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| JournalMode | No |
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| Jump | No |
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| Last | No |
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| Le | No |
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| LoadAnalysis | No |
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| Lt | No |
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| MakeRecord | Yes |
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| MaxPgcnt | No |
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| MemMax | No |
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| Move | No |
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| Multiply | No |
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| MustBeInt | No |
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| Ne | No |
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| NewRowid | No |
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| Next | No |
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| Noop | No |
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| Not | No |
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| NotExists | No |
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| NotFound | No |
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| NotNull | No |
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| Null | No |
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| NullRow | No |
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| Once | No |
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| OpenAutoindex | No |
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| OpenEphemeral | No |
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| OpenPseudo | Yes |
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| OpenRead | Yes |
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| OpenWrite | No |
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| Or | No |
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| Pagecount | No |
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| Param | No |
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| ParseSchema | No |
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| Permutation | No |
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| Prev | No |
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| Program | No |
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| ReadCookie | No |
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| Real | Yes |
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| RealAffinity | No |
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| Remainder | No |
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| ResetCount | No |
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| ResultRow | Yes |
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| Return | No |
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| Rewind | Yes |
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| RowData | No |
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| RowKey | No |
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| RowSetAdd | No |
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| RowSetRead | No |
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| RowSetTest | No |
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| Rowid | Yes |
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| SCopy | No |
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| Savepoint | No |
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| Seek | No |
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| SeekGe | No |
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| SeekGt | No |
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| SeekLe | No |
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| SeekLt | No |
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| Sequence | No |
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| SetCookie | No |
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| ShiftLeft | No |
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| ShiftRight | No |
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| Sort | No |
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| SorterCompare | No |
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| SorterData | Yes |
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| SorterInsert | Yes |
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| SorterNext | Yes |
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| SorterOpen | Yes |
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| SorterSort | Yes |
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| String | No |
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| String8 | Yes |
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| Subtract | No |
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| TableLock | No |
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| ToBlob | No |
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| ToInt | No |
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| ToNumeric | No |
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| ToReal | No |
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| ToText | No |
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| Trace | No |
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| Transaction | No |
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| VBegin | No |
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| VColumn | No |
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| VCreate | No |
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| VDestroy | No |
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| VFilter | No |
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| VNext | No |
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| VOpen | No |
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| VRename | No |
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| VUpdate | No |
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| Vacuum | No |
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| Variable | No |
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| VerifyCookie | No |
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| Yield | No |
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