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HyriseSQLParser/test/select_tests.cpp

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#include "thirdparty/microtest/microtest.h"
#include "sql_asserts.h"
#include "SQLParser.h"
using namespace hsql;
TEST(SelectTest) {
TEST_PARSE_SINGLE_SQL(
"SELECT * FROM students;",
kStmtSelect,
SelectStatement,
result,
stmt);
ASSERT_NULL(stmt->whereClause);
ASSERT_NULL(stmt->groupBy);
}
TEST(SelectExprTest) {
TEST_PARSE_SINGLE_SQL(
"SELECT a, MAX(b), CUSTOM(c, F(un)) FROM students;",
kStmtSelect,
SelectStatement,
result,
stmt);
ASSERT_NULL(stmt->whereClause);
ASSERT_NULL(stmt->groupBy);
ASSERT_EQ(stmt->selectList->size(), 3);
ASSERT(stmt->selectList->at(0)->isType(kExprColumnRef));
ASSERT_STREQ(stmt->selectList->at(0)->getName(), "a");
ASSERT(stmt->selectList->at(1)->isType(kExprFunctionRef));
ASSERT_STREQ(stmt->selectList->at(1)->getName(), "MAX");
ASSERT_NOTNULL(stmt->selectList->at(1)->exprList);
ASSERT_EQ(stmt->selectList->at(1)->exprList->size(), 1);
ASSERT(stmt->selectList->at(1)->exprList->at(0)->isType(kExprColumnRef));
ASSERT_STREQ(stmt->selectList->at(1)->exprList->at(0)->getName(), "b");
ASSERT(stmt->selectList->at(2)->isType(kExprFunctionRef));
ASSERT_STREQ(stmt->selectList->at(2)->getName(), "CUSTOM");
ASSERT_NOTNULL(stmt->selectList->at(2)->exprList);
ASSERT_EQ(stmt->selectList->at(2)->exprList->size(), 2);
ASSERT(stmt->selectList->at(2)->exprList->at(0)->isType(kExprColumnRef));
ASSERT_STREQ(stmt->selectList->at(2)->exprList->at(0)->getName(), "c");
ASSERT(stmt->selectList->at(2)->exprList->at(1)->isType(kExprFunctionRef));
ASSERT_STREQ(stmt->selectList->at(2)->exprList->at(1)->getName(), "F");
ASSERT_EQ(stmt->selectList->at(2)->exprList->at(1)->exprList->size(), 1);
ASSERT(stmt->selectList->at(2)->exprList->at(1)->exprList->at(0)->isType(kExprColumnRef));
ASSERT_STREQ(stmt->selectList->at(2)->exprList->at(1)->exprList->at(0)->getName(), "un");
}
TEST(SelectHavingTest) {
TEST_PARSE_SINGLE_SQL(
"SELECT city, AVG(grade) AS avg_grade FROM students GROUP BY city HAVING AVG(grade) < -2.0",
kStmtSelect,
SelectStatement,
result,
stmt);
ASSERT_FALSE(stmt->selectDistinct);
GroupByDescription* group = stmt->groupBy;
ASSERT_NOTNULL(group);
ASSERT_EQ(group->columns->size(), 1);
ASSERT_EQ(group->having->opType, kOpLess);
ASSERT(group->having->expr->isType(kExprFunctionRef));
ASSERT(group->having->expr2->isType(kExprLiteralFloat));
ASSERT_EQ(group->having->expr2->fval, -2.0);
}
TEST(SelectDistinctTest) {
TEST_PARSE_SINGLE_SQL(
"SELECT DISTINCT grade, city FROM students;",
kStmtSelect,
SelectStatement,
result,
stmt);
ASSERT(stmt->selectDistinct);
ASSERT_NULL(stmt->whereClause);
}
TEST(SelectSchemaTest) {
TEST_PARSE_SINGLE_SQL(
"SELECT grade FROM some_schema.students;",
kStmtSelect,
SelectStatement,
result,
stmt);
ASSERT(stmt->fromTable);
ASSERT_EQ(std::string(stmt->fromTable->schema), "some_schema");
}
TEST(SelectGroupDistinctTest) {
TEST_PARSE_SINGLE_SQL(
"SELECT city, COUNT(name), COUNT(DISTINCT grade) FROM students GROUP BY city;",
kStmtSelect,
SelectStatement,
result,
stmt);
ASSERT_FALSE(stmt->selectDistinct);
ASSERT_EQ(stmt->selectList->size(), 3);
ASSERT(!stmt->selectList->at(1)->distinct);
ASSERT(stmt->selectList->at(2)->distinct);
}
TEST(OrderByTest) {
TEST_PARSE_SINGLE_SQL(
"SELECT grade, city FROM students ORDER BY grade, city DESC;",
kStmtSelect,
SelectStatement,
result,
stmt);
ASSERT_NULL(stmt->whereClause);
ASSERT_NOTNULL(stmt->order);
ASSERT_EQ(stmt->order->size(), 2);
ASSERT_EQ(stmt->order->at(0)->type, kOrderAsc);
ASSERT_STREQ(stmt->order->at(0)->expr->name, "grade");
ASSERT_EQ(stmt->order->at(1)->type, kOrderDesc);
ASSERT_STREQ(stmt->order->at(1)->expr->name, "city");
}
TEST(SelectBetweenTest) {
TEST_PARSE_SINGLE_SQL(
"SELECT grade, city FROM students WHERE grade BETWEEN -1 and c;",
kStmtSelect,
SelectStatement,
result,
stmt);
Expr* where = stmt->whereClause;
ASSERT_NOTNULL(where);
ASSERT(where->isType(kExprOperator));
ASSERT_EQ(where->opType, kOpBetween);
ASSERT_STREQ(where->expr->getName(), "grade");
ASSERT(where->expr->isType(kExprColumnRef));
ASSERT_EQ(where->exprList->size(), 2);
ASSERT(where->exprList->at(0)->isType(kExprLiteralInt));
ASSERT_EQ(where->exprList->at(0)->ival, -1);
ASSERT(where->exprList->at(1)->isType(kExprColumnRef));
ASSERT_STREQ(where->exprList->at(1)->getName(), "c");
}
TEST(SelectConditionalSelectTest) {
TEST_PARSE_SINGLE_SQL(
"SELECT * FROM t WHERE a = (SELECT MIN(v) FROM tt) AND EXISTS (SELECT * FROM test WHERE x < a);",
kStmtSelect,
SelectStatement,
result,
stmt);
Expr* where = stmt->whereClause;
ASSERT_NOTNULL(where);
ASSERT(where->isType(kExprOperator));
ASSERT_EQ(where->opType, kOpAnd);
// a = (SELECT ...)
Expr* cond1 = where->expr;
ASSERT_NOTNULL(cond1);
ASSERT_NOTNULL(cond1->expr);
ASSERT_EQ(cond1->opType, kOpEquals);
ASSERT_STREQ(cond1->expr->getName(), "a");
ASSERT(cond1->expr->isType(kExprColumnRef));
ASSERT_NOTNULL(cond1->expr2);
ASSERT(cond1->expr2->isType(kExprSelect));
SelectStatement* select2 = cond1->expr2->select;
ASSERT_NOTNULL(select2);
ASSERT_STREQ(select2->fromTable->getName(), "tt");
// EXISTS (SELECT ...)
Expr* cond2 = where->expr2;
ASSERT_EQ(cond2->opType, kOpExists);
ASSERT_NOTNULL(cond2->select);
SelectStatement* ex_select = cond2->select;
ASSERT_STREQ(ex_select->fromTable->getName(), "test");
}
TEST(SelectCaseWhen) {
TEST_PARSE_SINGLE_SQL(
"SELECT MAX(CASE WHEN a = 'foo' THEN x ELSE 0 END) FROM test;",
kStmtSelect,
SelectStatement,
result,
stmt);
ASSERT_EQ(stmt->selectList->size(), 1);
Expr* func = stmt->selectList->at(0);
ASSERT_NOTNULL(func);
ASSERT(func->isType(kExprFunctionRef));
ASSERT_EQ(func->exprList->size(), 1);
Expr* caseExpr = func->exprList->at(0);
ASSERT_NOTNULL(caseExpr);
ASSERT(caseExpr->isType(kExprOperator));
ASSERT_EQ(caseExpr->opType, kOpCase);
ASSERT_NULL(caseExpr->expr);
ASSERT_NOTNULL(caseExpr->exprList);
ASSERT_NOTNULL(caseExpr->expr2);
ASSERT_EQ(caseExpr->exprList->size(), 1);
ASSERT(caseExpr->expr2->isType(kExprLiteralInt));
Expr* whenExpr = caseExpr->exprList->at(0);
ASSERT(whenExpr->expr->isType(kExprOperator));
ASSERT_EQ(whenExpr->expr->opType, kOpEquals);
ASSERT(whenExpr->expr->expr->isType(kExprColumnRef));
ASSERT(whenExpr->expr->expr2->isType(kExprLiteralString));
}
TEST(SelectCaseWhenWhen) {
TEST_PARSE_SINGLE_SQL(
"SELECT CASE WHEN x = 1 THEN 1 WHEN 1.25 < x THEN 2 END FROM test;",
kStmtSelect,
SelectStatement,
result,
stmt);
ASSERT_EQ(stmt->selectList->size(), 1);
Expr* caseExpr = stmt->selectList->at(0);
ASSERT_NOTNULL(caseExpr);
ASSERT(caseExpr->isType(kExprOperator));
ASSERT_EQ(caseExpr->opType, kOpCase);
// CASE [expr] [exprList] [expr2]
// [expr] [expr]
// [expr] [expr2] [expr] [expr2]
// CASE (null) WHEN X = 1 THEN 1 WHEN 1.25 < x THEN 2 (null)
ASSERT_NULL(caseExpr->expr);
ASSERT_NOTNULL(caseExpr->exprList);
ASSERT_NULL(caseExpr->expr2);
ASSERT_EQ(caseExpr->exprList->size(), 2);
Expr* whenExpr = caseExpr->exprList->at(0);
ASSERT_EQ(whenExpr->expr->opType, kOpEquals);
ASSERT(whenExpr->expr->expr->isType(kExprColumnRef));
ASSERT(whenExpr->expr->expr2->isType(kExprLiteralInt));
Expr* whenExpr2 = caseExpr->exprList->at(1);
ASSERT_EQ(whenExpr2->expr->opType, kOpLess);
ASSERT(whenExpr2->expr->expr->isType(kExprLiteralFloat));
ASSERT(whenExpr2->expr->expr2->isType(kExprColumnRef));
}
TEST(SelectCaseValueWhenWhenElse) {
TEST_PARSE_SINGLE_SQL(
"SELECT CASE x WHEN 1 THEN 0 WHEN 2 THEN 3 WHEN 8 THEN 7 ELSE 4 END FROM test;",
kStmtSelect,
SelectStatement,
result,
stmt);
ASSERT_EQ(stmt->selectList->size(), 1);
Expr* caseExpr = stmt->selectList->at(0);
ASSERT_NOTNULL(caseExpr);
ASSERT(caseExpr->isType(kExprOperator));
ASSERT_EQ(caseExpr->opType, kOpCase);
ASSERT_NOTNULL(caseExpr->expr);
ASSERT_NOTNULL(caseExpr->exprList);
ASSERT_NOTNULL(caseExpr->expr2);
ASSERT_EQ(caseExpr->exprList->size(), 3);
ASSERT(caseExpr->expr->isType(kExprColumnRef));
Expr* whenExpr = caseExpr->exprList->at(2);
ASSERT(whenExpr->expr->isType(kExprLiteralInt));
ASSERT_EQ(whenExpr->expr2->ival, 7);
}
TEST(SelectJoin) {
TEST_PARSE_SINGLE_SQL(
"SELECT City.name, Product.category, SUM(price) FROM fact\
INNER JOIN City ON fact.city_id = City.id\
OUTER JOIN Product ON fact.product_id = Product.id\
GROUP BY City.name, Product.category;",
kStmtSelect,
SelectStatement,
result,
stmt);
const TableRef* table = stmt->fromTable;
const JoinDefinition* outer_join = table->join;
ASSERT_EQ(table->type, kTableJoin);
ASSERT_EQ(outer_join->type, kJoinFull);
ASSERT_EQ(outer_join->right->type, kTableName);
ASSERT_STREQ(outer_join->right->name, "Product");
ASSERT_EQ(outer_join->condition->opType, kOpEquals);
ASSERT_STREQ(outer_join->condition->expr->table, "fact");
ASSERT_STREQ(outer_join->condition->expr->name, "product_id");
ASSERT_STREQ(outer_join->condition->expr2->table, "Product");
ASSERT_STREQ(outer_join->condition->expr2->name, "id");
// Joins are are left associative.
// So the second join should be on the left.
ASSERT_EQ(outer_join->left->type, kTableJoin);
const JoinDefinition* inner_join = outer_join->left->join;
ASSERT_EQ(inner_join->type, kJoinInner);
ASSERT_EQ(inner_join->left->type, kTableName);
ASSERT_STREQ(inner_join->left->name, "fact");
ASSERT_EQ(inner_join->right->type, kTableName);
ASSERT_STREQ(inner_join->right->name, "City");
ASSERT_EQ(inner_join->condition->opType, kOpEquals);
ASSERT_STREQ(inner_join->condition->expr->table, "fact");
ASSERT_STREQ(inner_join->condition->expr->name, "city_id");
ASSERT_STREQ(inner_join->condition->expr2->table, "City");
ASSERT_STREQ(inner_join->condition->expr2->name, "id");
}
TEST(SelectColumnOrder) {
TEST_PARSE_SINGLE_SQL(
"SELECT *\
FROM a,\
(SELECT a AS b FROM a) b,\
(SELECT a AS c FROM a) c,\
(SELECT a AS d FROM a) d;",
kStmtSelect,
SelectStatement,
result,
stmt);
ASSERT_EQ(stmt->fromTable->list->size(), 4);
// Make sure the order of the table list is corrects
ASSERT_STREQ(stmt->fromTable->list->at(0)->name, "a");
ASSERT_STREQ(stmt->fromTable->list->at(1)->alias, "b");
ASSERT_STREQ(stmt->fromTable->list->at(2)->alias, "c");
ASSERT_STREQ(stmt->fromTable->list->at(3)->alias, "d");
}
TEST(Operators) {
SelectStatement* stmt;
SQLParserResult result;
SQLParser::parse("SELECT * FROM foo where a = 1; \
SELECT * FROM foo where a == 1; \
SELECT * FROM foo where a != 1; \
SELECT * FROM foo where a <> 1; \
SELECT * FROM foo where a > 1; \
SELECT * FROM foo where a < 1; \
SELECT * FROM foo where a >= 1; \
SELECT * FROM foo where a <= 1;", &result);
stmt = (SelectStatement*) result.getStatement(0);
ASSERT_EQ(stmt->whereClause->opType, kOpEquals);
stmt = (SelectStatement*) result.getStatement(1);
ASSERT_EQ(stmt->whereClause->opType, kOpEquals);
stmt = (SelectStatement*) result.getStatement(2);
ASSERT_EQ(stmt->whereClause->opType, kOpNotEquals);
stmt = (SelectStatement*) result.getStatement(3);
ASSERT_EQ(stmt->whereClause->opType, kOpNotEquals);
stmt = (SelectStatement*) result.getStatement(4);
ASSERT_EQ(stmt->whereClause->opType, kOpGreater);
stmt = (SelectStatement*) result.getStatement(5);
ASSERT_EQ(stmt->whereClause->opType, kOpLess);
stmt = (SelectStatement*) result.getStatement(6);
ASSERT_EQ(stmt->whereClause->opType, kOpGreaterEq);
stmt = (SelectStatement*) result.getStatement(7);
ASSERT_EQ(stmt->whereClause->opType, kOpLessEq);
}
TEST(JoinTypes) {
SelectStatement* stmt;
SQLParserResult result;
SQLParser::parse("SELECT * FROM x join y on a=b; \
SELECT * FROM x inner join y on a=b; \
SELECT * FROM x left join y on a=b; \
SELECT * FROM x left outer join y on a=b; \
SELECT * FROM x right join y on a=b; \
SELECT * FROM x right outer join y on a=b; \
SELECT * FROM x full join y on a=b; \
SELECT * FROM x outer join y on a=b; \
SELECT * FROM x full outer join y on a=b; \
SELECT * FROM x natural join y; \
SELECT * FROM x cross join y on a=b; \
SELECT * FROM x, y where a = b;", &result);
stmt = (SelectStatement*) result.getStatement(0);
ASSERT_EQ(stmt->fromTable->join->type, kJoinInner);
stmt = (SelectStatement*) result.getStatement(1);
ASSERT_EQ(stmt->fromTable->join->type, kJoinInner);
stmt = (SelectStatement*) result.getStatement(2);
ASSERT_EQ(stmt->fromTable->join->type, kJoinLeft);
stmt = (SelectStatement*) result.getStatement(3);
ASSERT_EQ(stmt->fromTable->join->type, kJoinLeft);
stmt = (SelectStatement*) result.getStatement(4);
ASSERT_EQ(stmt->fromTable->join->type, kJoinRight);
stmt = (SelectStatement*) result.getStatement(5);
ASSERT_EQ(stmt->fromTable->join->type, kJoinRight);
stmt = (SelectStatement*) result.getStatement(6);
ASSERT_EQ(stmt->fromTable->join->type, kJoinFull);
stmt = (SelectStatement*) result.getStatement(7);
ASSERT_EQ(stmt->fromTable->join->type, kJoinFull);
stmt = (SelectStatement*) result.getStatement(8);
ASSERT_EQ(stmt->fromTable->join->type, kJoinFull);
stmt = (SelectStatement*) result.getStatement(9);
ASSERT_EQ(stmt->fromTable->join->type, kJoinNatural);
stmt = (SelectStatement*) result.getStatement(10);
ASSERT_EQ(stmt->fromTable->join->type, kJoinCross);
stmt = (SelectStatement*) result.getStatement(11);
ASSERT_NULL(stmt->fromTable->join);
}
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