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9 | 9 | // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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10 | 10 | // See the License for the specific language governing permissions and
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11 | 11 | // limitations under the License.
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| 12 | + |
| 13 | +#[macro_use] |
| 14 | +#[path = "macros/mod.rs"] |
| 15 | +mod macros; |
| 16 | + |
12 | 17 | use sqlparser::ast::*;
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13 | 18 | use sqlparser::dialect::{GenericDialect, SnowflakeDialect};
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| 19 | +use sqlparser::parser::ParserError; |
14 | 20 | use sqlparser::test_utils::*;
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15 | 21 | use sqlparser::tokenizer::*;
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16 | 22 |
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@@ -63,6 +69,126 @@ fn test_snowflake_single_line_tokenize() {
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63 | 69 | assert_eq!(expected, tokens);
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64 | 70 | }
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65 | 71 |
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| 72 | +fn get_from_section_from_select_query(query: &str) -> Vec<TableWithJoins> { |
| 73 | + let statement = snowflake().parse_sql_statements(query).unwrap()[0].clone(); |
| 74 | + |
| 75 | + let query = match statement { |
| 76 | + Statement::Query(query) => query, |
| 77 | + _ => panic!("Not a query"), |
| 78 | + }; |
| 79 | + |
| 80 | + let select = match query.body { |
| 81 | + SetExpr::Select(select) => select, |
| 82 | + _ => panic!("not a select query"), |
| 83 | + }; |
| 84 | + |
| 85 | + select.from.clone() |
| 86 | +} |
| 87 | + |
| 88 | +#[test] |
| 89 | +fn test_sf_derives_single_table_in_parenthesis() { |
| 90 | + let from = get_from_section_from_select_query("SELECT * FROM ((SELECT 1) AS t)"); |
| 91 | + assert_eq!( |
| 92 | + only(from).relation, |
| 93 | + TableFactor::Derived { |
| 94 | + lateral: false, |
| 95 | + subquery: Box::new(snowflake().verified_query("SELECT 1")), |
| 96 | + alias: Some(TableAlias { |
| 97 | + name: "t".into(), |
| 98 | + columns: vec![], |
| 99 | + }) |
| 100 | + } |
| 101 | + ); |
| 102 | + |
| 103 | + let from = get_from_section_from_select_query("SELECT * FROM (((SELECT 1) AS t))"); |
| 104 | + |
| 105 | + assert_eq!( |
| 106 | + only(from).relation, |
| 107 | + TableFactor::Derived { |
| 108 | + lateral: false, |
| 109 | + subquery: Box::new(snowflake().verified_query("SELECT 1")), |
| 110 | + alias: Some(TableAlias { |
| 111 | + name: "t".into(), |
| 112 | + columns: vec![], |
| 113 | + }) |
| 114 | + } |
| 115 | + ); |
| 116 | +} |
| 117 | + |
| 118 | +#[test] |
| 119 | +fn test_single_table_in_parenthesis() { |
| 120 | + //Parenthesized table names are non-standard, but supported in Snowflake SQL |
| 121 | + |
| 122 | + let from = get_from_section_from_select_query("SELECT * FROM (a NATURAL JOIN (b))"); |
| 123 | + assert_eq!(only(from).relation, nest!(table("a"), table("b"))); |
| 124 | + |
| 125 | + let from = get_from_section_from_select_query("SELECT * FROM (a NATURAL JOIN ((b)))"); |
| 126 | + assert_eq!(only(from).relation, nest!(table("a"), table("b"))); |
| 127 | +} |
| 128 | + |
| 129 | +#[test] |
| 130 | +fn test_single_table_in_parenthesis_with_alias() { |
| 131 | + let sql = "SELECT * FROM (a NATURAL JOIN (b) c )"; |
| 132 | + let table_with_joins = only(get_from_section_from_select_query(sql)); |
| 133 | + assert_eq!( |
| 134 | + table_with_joins.relation, |
| 135 | + nest!(table("a"), table_with_alias("b", "c")) |
| 136 | + ); |
| 137 | + |
| 138 | + let sql = "SELECT * FROM (a NATURAL JOIN ((b)) c )"; |
| 139 | + let table_with_joins = only(get_from_section_from_select_query(sql)); |
| 140 | + assert_eq!( |
| 141 | + table_with_joins.relation, |
| 142 | + nest!(table("a"), table_with_alias("b", "c")) |
| 143 | + ); |
| 144 | + |
| 145 | + let sql = "SELECT * FROM (a NATURAL JOIN ( (b) c ) )"; |
| 146 | + let table_with_joins = only(get_from_section_from_select_query(sql)); |
| 147 | + assert_eq!( |
| 148 | + table_with_joins.relation, |
| 149 | + nest!(table("a"), table_with_alias("b", "c")) |
| 150 | + ); |
| 151 | + |
| 152 | + let sql = "SELECT * FROM (a NATURAL JOIN ( (b) as c ) )"; |
| 153 | + let table_with_joins = only(get_from_section_from_select_query(sql)); |
| 154 | + assert_eq!( |
| 155 | + table_with_joins.relation, |
| 156 | + nest!(table("a"), table_with_alias("b", "c")) |
| 157 | + ); |
| 158 | + |
| 159 | + let sql = "SELECT * FROM (a alias1 NATURAL JOIN ( (b) c ) )"; |
| 160 | + let table_with_joins = only(get_from_section_from_select_query(sql)); |
| 161 | + assert_eq!( |
| 162 | + table_with_joins.relation, |
| 163 | + nest!(table_with_alias("a", "alias1"), table_with_alias("b", "c")) |
| 164 | + ); |
| 165 | + |
| 166 | + let sql = "SELECT * FROM (a as alias1 NATURAL JOIN ( (b) as c ) )"; |
| 167 | + let table_with_joins = only(get_from_section_from_select_query(sql)); |
| 168 | + assert_eq!( |
| 169 | + table_with_joins.relation, |
| 170 | + nest!(table_with_alias("a", "alias1"), table_with_alias("b", "c")) |
| 171 | + ); |
| 172 | + |
| 173 | + let res = snowflake().parse_sql_statements("SELECT * FROM (a NATURAL JOIN b) c"); |
| 174 | + assert_eq!( |
| 175 | + ParserError::ParserError("Expected end of statement, found: c".to_string()), |
| 176 | + res.unwrap_err() |
| 177 | + ); |
| 178 | + |
| 179 | + let res = snowflake().parse_sql_statements("SELECT * FROM (a b) c"); |
| 180 | + assert_eq!( |
| 181 | + ParserError::ParserError("duplicate alias b".to_string()), |
| 182 | + res.unwrap_err() |
| 183 | + ); |
| 184 | +} |
| 185 | + |
| 186 | +fn snowflake() -> TestedDialects { |
| 187 | + TestedDialects { |
| 188 | + dialects: vec![Box::new(SnowflakeDialect {})], |
| 189 | + } |
| 190 | +} |
| 191 | + |
66 | 192 | fn snowflake_and_generic() -> TestedDialects {
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67 | 193 | TestedDialects {
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68 | 194 | dialects: vec![Box::new(SnowflakeDialect {}), Box::new(GenericDialect {})],
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