mirror of
https://github.com/aljazceru/turso.git
synced 2025-12-25 20:14:21 +01:00
4619890ffc
This permits only `ANALYZE <table_name>` to work, and all other forms fail with a parse error (as documented in the tests). On SQLite, ANALYZE generates: sqlite> CREATE TABLE sqlite_stat1(tbl,idx,stat); sqlite> CREATE TABLE iiftest(a int, b int, c int); sqlite> EXPLAIN ANALYZE iiftest; addr opcode p1 p2 p3 p4 p5 comment ---- ------------- ---- ---- ---- ------------- -- ------------- 0 Init 0 21 0 0 Start at 21 1 Null 0 1 0 0 r[1]=NULL 2 OpenWrite 3 4 0 3 0 root=4 iDb=0; sqlite_stat1 3 Rewind 3 9 0 0 4 Column 3 0 2 0 r[2]= cursor 3 column 0 5 Ne 3 8 2 BINARY-8 81 if r[2]!=r[3] goto 8 6 Rowid 3 4 0 0 r[4]=sqlite_stat1.rowid 7 Delete 3 0 0 sqlite_stat1 2 8 Next 3 4 0 1 9 OpenWrite 0 4 0 3 0 root=4 iDb=0; sqlite_stat1 10 OpenRead 4 2 0 3 0 root=2 iDb=0; iiftest 11 String8 0 11 0 iiftest 0 r[11]='iiftest'; iiftest 12 Count 4 13 0 0 r[13]=count() 13 IfNot 13 18 0 0 14 Null 0 12 0 0 r[12]=NULL 15 MakeRecord 11 3 9 BBB 0 r[9]=mkrec(r[11..13]) 16 NewRowid 0 5 0 0 r[5]=rowid 17 Insert 0 9 5 8 intkey=r[5] data=r[9] 18 LoadAnalysis 0 0 0 0 19 Expire 0 0 0 0 20 Halt 0 0 0 0 21 Transaction 0 1 9 0 1 usesStmtJournal=0 22 String8 0 3 0 iiftest 0 r[3]='iiftest' 23 Goto 0 1 0 0 Turso can now generate: turso> create table sqlite_stat1(tbl,idx,stat); turso> create table iiftest(a int, b int, c int); turso> explain analyze iiftest; addr opcode p1 p2 p3 p4 p5 comment ---- ----------------- ---- ---- ---- ------------- -- ------- 0 Init 0 19 0 0 Start at 19 1 Null 0 1 0 0 r[1]=NULL 2 OpenWrite 0 2 0 0 root=2; iDb=0 3 Rewind 0 9 0 0 Rewind sqlite_stat1 4 Column 0 0 2 0 r[2]=sqlite_stat1.tbl 5 Ne 2 3 9 0 if r[2]!=r[3] goto 9 6 RowId 0 4 0 0 r[4]=sqlite_stat1.rowid 7 Delete 0 0 0 sqlite_stat1 0 8 Next 0 4 0 0 9 OpenWrite 1 2 0 0 root=2; iDb=0 10 OpenRead 2 3 0 0 =iiftest, root=3, iDb=0 11 String8 0 7 0 iiftest 0 r[7]='iiftest' 12 Count 2 9 0 0 13 IfNot 9 18 0 0 if !r[9] goto 18 14 Null 0 8 0 0 r[8]=NULL 15 MakeRecord 7 3 6 0 r[6]=mkrec(r[7..9]) 16 NewRowid 1 5 0 0 r[5]=rowid 17 Insert 1 6 5 sqlite_stat1 0 intkey=r[5] data=r[6] 18 Halt 0 0 0 0 19 String8 0 3 0 iiftest 0 r[3]='iiftest' 20 Goto 0 1 0 0 Note the missing support for LoadAnalysis and Expire, but there's no optimizer work done yet to leverage any gathered statistics yet anyway.
Turso Testing
Testing Extensions
When adding tests for extensions, please follow these guidelines:
- Tests that verify the internal logic or behavior of a particular extension should go into
cli_tests/extensions.py. - Tests that verify how extensions interact with the database engine, such as virtual table handling, should be written
in TCL (see
vtab.testas an example).
To check which extensions are available in TCL, or to add a new one, refer to the tester.tcl file and look at the extension_map.