diff options
Diffstat (limited to 'sqlglot/dialects/sqlite.py')
| -rw-r--r-- | sqlglot/dialects/sqlite.py | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/sqlglot/dialects/sqlite.py b/sqlglot/dialects/sqlite.py index 87b98a5..bbb752b 100644 --- a/sqlglot/dialects/sqlite.py +++ b/sqlglot/dialects/sqlite.py @@ -13,6 +13,23 @@ from sqlglot.dialects.dialect import ( from sqlglot.tokens import TokenType +# https://www.sqlite.org/lang_aggfunc.html#group_concat +def _group_concat_sql(self, expression): + this = expression.this + distinct = expression.find(exp.Distinct) + if distinct: + this = distinct.expressions[0] + distinct = "DISTINCT " + + if isinstance(expression.this, exp.Order): + self.unsupported("SQLite GROUP_CONCAT doesn't support ORDER BY.") + if expression.this.this and not distinct: + this = expression.this.this + + separator = expression.args.get("separator") + return f"GROUP_CONCAT({distinct or ''}{self.format_args(this, separator)})" + + class SQLite(Dialect): class Tokenizer(tokens.Tokenizer): IDENTIFIERS = ['"', ("[", "]"), "`"] @@ -62,6 +79,7 @@ class SQLite(Dialect): exp.Levenshtein: rename_func("EDITDIST3"), exp.TableSample: no_tablesample_sql, exp.TryCast: no_trycast_sql, + exp.GroupConcat: _group_concat_sql, } def transaction_sql(self, expression): |