11# PostgreSQL v15-to-v16 AST Transformer Status
22
33## Current Status: ** IN PROGRESS** π‘
4- - ** Test Pass Rate** : 193 /258 tests passing (74.8 % success rate)
4+ - ** Test Pass Rate** : 194 /258 tests passing (75.2 % success rate)
55- ** Branch** : ` transform/pg15-pg16 `
66- ** PR** : [ #182 ] ( https://github.com/launchql/pgsql-parser/pull/182 )
77
88## Progress Summary
9- Started from a basic skeleton transformer and systematically implemented node wrapping and transformation logic across all node types. Made significant progress improving test pass rate from initial ~ 30% to current 74.8 %.
9+ Started from a basic skeleton transformer and systematically implemented node wrapping and transformation logic across all node types. Made significant progress improving test pass rate from initial ~ 30% to current 75.2 %.
1010
1111## Key Achievements
1212- β
Implemented comprehensive node transformation methods for 100+ node types
@@ -16,18 +16,18 @@ Started from a basic skeleton transformer and systematically implemented node wr
1616- β
Implemented context-aware Integer transformation logic for DefineStmt contexts
1717- β
Added GrantRoleStmt admin_opt to opt field transformation
1818
19- ## Current Challenge: Remaining 65 Failing Tests
20- ** Root Issue** : Successfully resolved over-transformation and under-transformation issues for Integer objects. Maintained stable baseline of 193 passing tests after reverting INSERT transformation logic that caused regressions.
19+ ## Current Challenge: Remaining 64 Failing Tests
20+ ** Root Issue** : Successfully resolved over-transformation and under-transformation issues for Integer objects. Maintained stable baseline of 194 passing tests after reverting INSERT transformation logic that caused regressions.
2121
2222** Analysis Completed** :
2323- β
Fixed over-transformation: A_Const ival transformation now conservative, only transforms in specific DefineStmt contexts
2424- β
Fixed under-transformation: Added TypeName arrayBounds and DefineStmt args contexts to Integer method
2525- β
Empty Integer objects in TypeName arrayBounds context now transform to ` {"ival": -1} `
2626- β
Empty Integer objects in DefineStmt args context now transform to ` {"ival": -1} `
27- - β
Reverted INSERT transformation logic to prevent regressions from 193 to 184 passing tests
28- - π Need to continue systematic improvement of remaining 65 failing tests
27+ - β
Reverted INSERT transformation logic to prevent regressions from 194 to 184 passing tests
28+ - π Need to continue systematic improvement of remaining 64 failing tests
2929
30- ## Failing Tests (65 total)
30+ ## Failing Tests (64 total)
3131
3232### Latest PostgreSQL Tests (9 tests)
3333- [ ] latest/postgres/create_aggregate-6.sql
@@ -126,8 +126,8 @@ Started from a basic skeleton transformer and systematically implemented node wr
1261265 . Continue systematic improvement of remaining failing tests
127127
128128## Test Categories
129- - ** Passing (193 )** : Basic node transformations, most SQL constructs, Integer transformations in TypeName and DefineStmt contexts
130- - ** Failing (65 )** : Complex nested structures, remaining transformation edge cases, INSERT VALUES contexts
129+ - ** Passing (194 )** : Basic node transformations, most SQL constructs, Integer transformations in TypeName and DefineStmt contexts
130+ - ** Failing (64 )** : Complex nested structures, remaining transformation edge cases, INSERT VALUES contexts
131131
132132## Technical Notes
133133- Following patterns from v14-to-v15 transformer as reference
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