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Add support for parenthized subselects #146

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6 changes: 5 additions & 1 deletion src/syntax/main.ne
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Original file line number Diff line number Diff line change
Expand Up @@ -68,10 +68,14 @@ statement_noprep
| functions_statements


selection -> select_statement {% unwrap %}

any_selection -> select_statement {% unwrap %}
| select_values {% unwrap %}
| with_statement {% unwrap %}
| with_recursive_statement {% unwrap %}
| union_statement {% unwrap %}

selection -> lparen selection rparen {% get(1) %}
| any_selection {% get(0) %}

selection_paren -> lparen selection rparen {% get(1) %}
87 changes: 87 additions & 0 deletions src/syntax/select.spec.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -1060,4 +1060,91 @@ describe('Select statements', () => {
type: 'skip locked',
}
});

checkSelect("(select * from foo)",
{
type: 'select',
"columns": [
{
"expr": {
"name": "*",
"type": "ref"
}
}
],
"from": [
{
"name": {
"name": "foo"
},
"type": "table"
}
]
}
);

const testSubselect: SelectStatement = {
type: 'select',
"columns": [
{
"expr": {
"name": "*",
"type": "ref"
}
}
],
"from": [
{
"alias": "a",
"statement": {
"columns": [
{
"expr": {
"name": "*",
"type": "ref"
}
}
],
"from": [
{
"name": {
"name": "bar"
},
"type": "table"
}
],
"type": "select",
},
"type": "statement"
}
]
};

checkSelect(`
select * from (
select * from bar
) a`,
testSubselect
);

checkSelect(`
select * from (
(
select * from bar
)
) a`,
testSubselect
);

checkSelect(`
select * from (
(
(
select * from bar
)
)
) a`,
testSubselect
);

});