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fix(oracle): map ISO week-numbering year IYYY to %G [CLAUDE] #8675

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Merged
georgesittas merged 1 commit into from
Oct 19, 2026
Merged

fix(oracle): map ISO week-numbering year IYYY to %G [CLAUDE] #8675

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1 change: 1 addition & 0 deletions sqlglot/dialects/oracle.py
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Original file line number Diff line number Diff line change
Expand Up @@ -37,6 +37,7 @@ class Oracle(Dialect):
"HH12": "%I", # alias for HH
"HH24": "%H", # Hour of day (0-23)
"IW": "%V", # Calendar week of year (1-52 or 1-53), as defined by the ISO 8601 standard
"IYYY": "%G", # 4-digit year of the ISO 8601 week-numbering calendar
"MI": "%M", # Minute (0-59)
"MM": "%m", # Month (01-12; January = 01)
"MON": "%b", # Abbreviated name of month
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12 changes: 12 additions & 0 deletions tests/dialects/test_oracle.py
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Expand Up @@ -516,6 +516,18 @@ def test_oracle(self):
"postgres": "CAST('2022-01-01' AS DATE)",
},
)
self.validate_all(
"SELECT TO_CHAR(x, 'IYYY-IW')",
read={
"duckdb": "SELECT STRFTIME(x, '%G-%V')",
},
)
self.validate_all(
"SELECT TO_CHAR(CAST(x AS DATE), 'IYYY-IW')",
read={
"bigquery": "SELECT FORMAT_DATE('%G-%V', x)",
},
)

self.validate_all(
"x::binary_double",
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