Revision 2825
Added by Aaron Marcuse-Kubitza about 12 years ago
| lib/sql_gen.py | ||
|---|---|---|
| 379 | 379 |
left_value = remove_col_rename(left_value) |
| 380 | 380 |
|
| 381 | 381 |
right_value = self.value |
| 382 |
left = left_value.to_str(db) |
|
| 383 |
right = right_value.to_str(db) |
|
| 384 | 382 |
|
| 385 | 383 |
# Parse operator |
| 386 | 384 |
operator = self.operator |
| ... | ... | |
| 389 | 387 |
neg_ref = [False] |
| 390 | 388 |
operator = strings.remove_prefix('!', operator, neg_ref)
|
| 391 | 389 |
equals = operator.endswith('=')
|
| 392 |
if equals and is_null(self.value): operator = 'IS'
|
|
| 390 |
if equals and is_null(right_value): operator = 'IS'
|
|
| 393 | 391 |
|
| 392 |
# Handle nullable columns |
|
| 393 |
check_null = False |
|
| 394 |
if equals and not passthru_null_ref[0] and isinstance(right_value, Col): |
|
| 395 |
check_null = True |
|
| 396 |
|
|
| 397 |
left = left_value.to_str(db) |
|
| 398 |
right = right_value.to_str(db) |
|
| 399 |
|
|
| 394 | 400 |
# Create str |
| 395 | 401 |
str_ = left+' '+operator+' '+right |
| 396 |
if equals and not passthru_null_ref[0] and isinstance(right_value, Col):
|
|
| 402 |
if check_null:
|
|
| 397 | 403 |
str_ = '('+str_+' OR ('+left+' IS NULL AND '+right+' IS NULL))'
|
| 398 | 404 |
if neg_ref[0]: str_ = 'NOT '+str_ |
| 399 | 405 |
return str_ |
Also available in: Unified diff
sql_gen.py: CompareCond.to_str(): Put handling nullable columns as a separate step so it can be expanded