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Introduce support for EXPLAIN [ANALYZE] [VERBOSE] <STATEMENT> syntax

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Introduce support for EXPLAIN [ANALYZE] [VERBOSE] <STATEMENT> syntax
This commit is contained in:
Dmitry Patsura 2020-12-28 14:22:03 +03:00 • committed by GitHub
parent cbd3c6b1a1
commit 17f2930885
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5 changed files with 156 additions and 11 deletions
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58
tests/sqlparser_common.rs
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@ -543,17 +543,23 @@ fn parse_is_not_null() {
fn parse_not_precedence() {
// NOT has higher precedence than OR/AND, so the following must parse as (NOT true) OR true
let sql = "NOT true OR true";
assert_matches!(verified_expr(sql), Expr::BinaryOp {
op: BinaryOperator::Or,
..
});
assert_matches!(
verified_expr(sql),
Expr::BinaryOp {
op: BinaryOperator::Or,
..
}
);
// But NOT has lower precedence than comparison operators, so the following parses as NOT (a IS NULL)
let sql = "NOT a IS NULL";
assert_matches!(verified_expr(sql), Expr::UnaryOp {
op: UnaryOperator::Not,
..
});
assert_matches!(
verified_expr(sql),
Expr::UnaryOp {
op: UnaryOperator::Not,
..
}
);
// NOT has lower precedence than BETWEEN, so the following parses as NOT (1 NOT BETWEEN 1 AND 2)
let sql = "NOT 1 NOT BETWEEN 1 AND 2";
@ -1463,7 +1469,7 @@ fn parse_create_external_table_lowercase() {
lng DOUBLE) \
STORED AS PARQUET LOCATION '/tmp/example.csv'",
);
assert_matches!(ast, Statement::CreateTable{..});
assert_matches!(ast, Statement::CreateTable { .. });
}
#[test]
@ -1606,6 +1612,33 @@ fn parse_scalar_function_in_projection() {
);
}
fn run_explain_analyze(query: &str, expected_verbose: bool, expected_analyze: bool) {
match verified_stmt(query) {
Statement::Explain {
analyze,
verbose,
statement,
} => {
assert_eq!(verbose, expected_verbose);
assert_eq!(analyze, expected_analyze);
assert_eq!("SELECT sqrt(id) FROM foo", statement.to_string());
}
_ => panic!("Unexpected Statement, must be Explain"),
}
}
#[test]
fn parse_explain_analyze_with_simple_select() {
run_explain_analyze("EXPLAIN SELECT sqrt(id) FROM foo", false, false);
run_explain_analyze("EXPLAIN VERBOSE SELECT sqrt(id) FROM foo", true, false);
run_explain_analyze("EXPLAIN ANALYZE SELECT sqrt(id) FROM foo", false, true);
run_explain_analyze(
"EXPLAIN ANALYZE VERBOSE SELECT sqrt(id) FROM foo",
true,
true,
);
}
#[test]
fn parse_named_argument_function() {
let sql = "SELECT FUN(a => '1', b => '2') FROM foo";
@ -2554,11 +2587,14 @@ fn parse_multiple_statements() {
#[test]
fn parse_scalar_subqueries() {
let sql = "(SELECT 1) + (SELECT 2)";
assert_matches!(verified_expr(sql), Expr::BinaryOp {
assert_matches!(
verified_expr(sql),
Expr::BinaryOp {
op: BinaryOperator::Plus, ..
//left: box Subquery { .. },
//right: box Subquery { .. },
});
}
);
}
#[test]