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parser_test.go
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parser_test.go
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/*
Copyright 2019 Google LLC
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
package spansql
import (
"fmt"
"math"
"reflect"
"testing"
"time"
"cloud.google.com/go/civil"
)
func TestParseQuery(t *testing.T) {
tests := []struct {
in string
want Query
}{
{`SELECT 17`, Query{Select: Select{List: []Expr{IntegerLiteral(17)}}}},
{
`SELECT Alias AS aka From Characters WHERE Age < @ageLimit AND Alias IS NOT NULL ORDER BY Age DESC LIMIT @limit OFFSET 3` + "\n\t",
Query{
Select: Select{
List: []Expr{ID("Alias")},
From: []SelectFrom{SelectFromTable{
Table: "Characters",
}},
Where: LogicalOp{
Op: And,
LHS: ComparisonOp{
LHS: ID("Age"),
Op: Lt,
RHS: Param("ageLimit"),
},
RHS: IsOp{
LHS: ID("Alias"),
Neg: true,
RHS: Null,
},
},
ListAliases: []ID{"aka"},
},
Order: []Order{{
Expr: ID("Age"),
Desc: true,
}},
Limit: Param("limit"),
Offset: IntegerLiteral(3),
},
},
{
`SELECT COUNT(*) FROM Packages`,
Query{
Select: Select{
List: []Expr{
Func{
Name: "COUNT",
Args: []Expr{Star},
},
},
From: []SelectFrom{SelectFromTable{Table: "Packages"}},
},
},
},
{
`SELECT * FROM Packages`,
Query{
Select: Select{
List: []Expr{Star},
From: []SelectFrom{SelectFromTable{Table: "Packages"}},
},
},
},
{
`SELECT date, timestamp as timestamp FROM Packages WHERE date = DATE '2014-09-27' AND timestamp = TIMESTAMP '2014-09-27 12:30:00'`,
Query{
Select: Select{
List: []Expr{ID("date"), ID("timestamp")},
From: []SelectFrom{SelectFromTable{Table: "Packages"}},
Where: LogicalOp{
Op: And,
LHS: ComparisonOp{
Op: Eq,
LHS: ID("date"),
RHS: DateLiteral{Year: 2014, Month: 9, Day: 27},
},
RHS: ComparisonOp{
Op: Eq,
LHS: ID("timestamp"),
RHS: TimestampLiteral(timef(t, "2006-01-02 15:04:05", "2014-09-27 12:30:00")),
},
},
ListAliases: []ID{"", "timestamp"},
},
},
},
{
`SELECT UNIX_DATE(DATE "2008-12-25")`,
Query{
Select: Select{
List: []Expr{Func{Name: "UNIX_DATE", Args: []Expr{DateLiteral{Year: 2008, Month: 12, Day: 25}}}},
},
},
},
{
`SELECT * FROM Foo WHERE STARTS_WITH(Bar, 'B')`,
Query{
Select: Select{
List: []Expr{Star},
From: []SelectFrom{SelectFromTable{Table: "Foo"}},
Where: Func{Name: "STARTS_WITH", Args: []Expr{ID("Bar"), StringLiteral("B")}},
},
},
},
{
`SELECT * FROM Foo WHERE CAST(Bar AS STRING)='Bar'`,
Query{
Select: Select{
List: []Expr{Star},
From: []SelectFrom{SelectFromTable{Table: "Foo"}},
Where: ComparisonOp{
Op: Eq,
LHS: Func{Name: "CAST", Args: []Expr{TypedExpr{Expr: ID("Bar"), Type: Type{Base: String}}}},
RHS: StringLiteral("Bar"),
},
},
},
},
{
`SELECT SUM(PointsScored) AS total_points, FirstName, LastName AS surname FROM PlayerStats GROUP BY FirstName, LastName`,
Query{
Select: Select{
List: []Expr{
Func{Name: "SUM", Args: []Expr{ID("PointsScored")}},
ID("FirstName"),
ID("LastName"),
},
From: []SelectFrom{SelectFromTable{Table: "PlayerStats"}},
GroupBy: []Expr{ID("FirstName"), ID("LastName")},
ListAliases: []ID{"total_points", "", "surname"},
},
},
},
// https://github.com/googleapis/google-cloud-go/issues/1973
{
`SELECT COUNT(*) AS count FROM Lists AS l WHERE l.user_id=@userID`,
Query{
Select: Select{
List: []Expr{
Func{Name: "COUNT", Args: []Expr{Star}},
},
From: []SelectFrom{SelectFromTable{Table: "Lists", Alias: "l"}},
Where: ComparisonOp{
Op: Eq,
LHS: PathExp{"l", "user_id"},
RHS: Param("userID"),
},
ListAliases: []ID{"count"},
},
},
},
// with single table hint
{
`SELECT * FROM Packages@{FORCE_INDEX=PackagesIdx} WHERE package_idx=@packageIdx`,
Query{
Select: Select{
List: []Expr{Star},
From: []SelectFrom{SelectFromTable{Table: "Packages", Hints: map[string]string{"FORCE_INDEX": "PackagesIdx"}}},
Where: ComparisonOp{
Op: Eq,
LHS: ID("package_idx"),
RHS: Param("packageIdx"),
},
},
},
},
// with multiple table hints
{
`SELECT * FROM Packages@{ FORCE_INDEX=PackagesIdx, GROUPBY_SCAN_OPTIMIZATION=TRUE } WHERE package_idx=@packageIdx`,
Query{
Select: Select{
List: []Expr{Star},
From: []SelectFrom{SelectFromTable{Table: "Packages", Hints: map[string]string{"FORCE_INDEX": "PackagesIdx", "GROUPBY_SCAN_OPTIMIZATION": "TRUE"}}},
Where: ComparisonOp{
Op: Eq,
LHS: ID("package_idx"),
RHS: Param("packageIdx"),
},
},
},
},
{
`SELECT * FROM A INNER JOIN B ON A.w = B.y`,
Query{
Select: Select{
List: []Expr{Star},
From: []SelectFrom{SelectFromJoin{
Type: InnerJoin,
LHS: SelectFromTable{Table: "A"},
RHS: SelectFromTable{Table: "B"},
On: ComparisonOp{
Op: Eq,
LHS: PathExp{"A", "w"},
RHS: PathExp{"B", "y"},
},
}},
},
},
},
{
`SELECT * FROM A INNER JOIN B USING (x)`,
Query{
Select: Select{
List: []Expr{Star},
From: []SelectFrom{SelectFromJoin{
Type: InnerJoin,
LHS: SelectFromTable{Table: "A"},
RHS: SelectFromTable{Table: "B"},
Using: []ID{"x"},
}},
},
},
},
{
`SELECT Roster . LastName, TeamMascot.Mascot FROM Roster JOIN TeamMascot ON Roster.SchoolID = TeamMascot.SchoolID`,
Query{
Select: Select{
List: []Expr{
PathExp{"Roster", "LastName"},
PathExp{"TeamMascot", "Mascot"},
},
From: []SelectFrom{SelectFromJoin{
Type: InnerJoin,
LHS: SelectFromTable{Table: "Roster"},
RHS: SelectFromTable{Table: "TeamMascot"},
On: ComparisonOp{
Op: Eq,
LHS: PathExp{"Roster", "SchoolID"},
RHS: PathExp{"TeamMascot", "SchoolID"},
},
}},
},
},
},
// Joins with hints.
{
`SELECT * FROM A HASH JOIN B USING (x)`,
Query{
Select: Select{
List: []Expr{Star},
From: []SelectFrom{SelectFromJoin{
Type: InnerJoin,
LHS: SelectFromTable{Table: "A"},
RHS: SelectFromTable{Table: "B"},
Using: []ID{"x"},
Hints: map[string]string{"JOIN_METHOD": "HASH_JOIN"},
}},
},
},
},
{
`SELECT * FROM A JOIN @{ JOIN_METHOD=HASH_JOIN } B USING (x)`,
Query{
Select: Select{
List: []Expr{Star},
From: []SelectFrom{SelectFromJoin{
Type: InnerJoin,
LHS: SelectFromTable{Table: "A"},
RHS: SelectFromTable{Table: "B"},
Using: []ID{"x"},
Hints: map[string]string{"JOIN_METHOD": "HASH_JOIN"},
}},
},
},
},
{
`SELECT * FROM UNNEST ([1, 2, 3]) AS data`,
Query{
Select: Select{
List: []Expr{Star},
From: []SelectFrom{SelectFromUnnest{
Expr: Array{
IntegerLiteral(1),
IntegerLiteral(2),
IntegerLiteral(3),
},
Alias: ID("data"),
}},
},
},
},
}
for _, test := range tests {
got, err := ParseQuery(test.in)
if err != nil {
t.Errorf("ParseQuery(%q): %v", test.in, err)
continue
}
if !reflect.DeepEqual(got, test.want) {
t.Errorf("ParseQuery(%q) incorrect.\n got %#v\nwant %#v", test.in, got, test.want)
}
}
}
func TestParseDMLStmt(t *testing.T) {
tests := []struct {
in string
want DMLStmt
}{
{
"INSERT Singers (SingerId, FirstName, LastName) VALUES (1, 'Marc', 'Richards')",
&Insert{
Table: "Singers",
Columns: []ID{ID("SingerId"), ID("FirstName"), ID("LastName")},
Input: Values{{IntegerLiteral(1), StringLiteral("Marc"), StringLiteral("Richards")}},
},
},
{
"INSERT INTO Singers (SingerId, FirstName, LastName) VALUES (1, 'Marc', 'Richards')",
&Insert{
Table: "Singers",
Columns: []ID{ID("SingerId"), ID("FirstName"), ID("LastName")},
Input: Values{{IntegerLiteral(1), StringLiteral("Marc"), StringLiteral("Richards")}},
},
},
{
"INSERT Singers (SingerId, FirstName, LastName) SELECT * FROM UNNEST ([1, 2, 3]) AS data",
&Insert{
Table: "Singers",
Columns: []ID{ID("SingerId"), ID("FirstName"), ID("LastName")},
Input: Select{
List: []Expr{Star},
From: []SelectFrom{SelectFromUnnest{
Expr: Array{
IntegerLiteral(1),
IntegerLiteral(2),
IntegerLiteral(3),
},
Alias: ID("data"),
}},
},
},
},
}
for _, test := range tests {
got, err := ParseDMLStmt(test.in)
if err != nil {
t.Errorf("ParseDMLStmt(%q): %v", test.in, err)
continue
}
if !reflect.DeepEqual(got, test.want) {
t.Errorf("ParseDMLStmt(%q) incorrect.\n got %#v\nwant %#v", test.in, got, test.want)
}
}
}
func TestParseExpr(t *testing.T) {
tests := []struct {
in string
want Expr
}{
{`17`, IntegerLiteral(17)},
{`-1`, IntegerLiteral(-1)},
{fmt.Sprintf(`%d`, math.MaxInt64), IntegerLiteral(math.MaxInt64)},
{fmt.Sprintf(`%d`, math.MinInt64), IntegerLiteral(math.MinInt64)},
{"1.797693134862315708145274237317043567981e+308", FloatLiteral(math.MaxFloat64)},
{`4.940656458412465441765687928682213723651e-324`, FloatLiteral(math.SmallestNonzeroFloat64)},
{`0xf00d`, IntegerLiteral(0xf00d)},
{`-0xbeef`, IntegerLiteral(-0xbeef)},
{`0XabCD`, IntegerLiteral(0xabcd)},
{`-0XBEEF`, IntegerLiteral(-0xbeef)},
{`123.456e-67`, FloatLiteral(123.456e-67)},
{`-123.456e-67`, FloatLiteral(-123.456e-67)},
{`.1E4`, FloatLiteral(0.1e4)},
{`58.`, FloatLiteral(58)},
{`4e2`, FloatLiteral(4e2)},
{`X + Y * Z`, ArithOp{LHS: ID("X"), Op: Add, RHS: ArithOp{LHS: ID("Y"), Op: Mul, RHS: ID("Z")}}},
{`X + Y + Z`, ArithOp{LHS: ArithOp{LHS: ID("X"), Op: Add, RHS: ID("Y")}, Op: Add, RHS: ID("Z")}},
{`+X * -Y`, ArithOp{LHS: ArithOp{Op: Plus, RHS: ID("X")}, Op: Mul, RHS: ArithOp{Op: Neg, RHS: ID("Y")}}},
// Don't require space around +/- operators.
{`ID+100`, ArithOp{LHS: ID("ID"), Op: Add, RHS: IntegerLiteral(100)}},
{`ID-100`, ArithOp{LHS: ID("ID"), Op: Sub, RHS: IntegerLiteral(100)}},
{`ID&0x3fff`, ArithOp{LHS: ID("ID"), Op: BitAnd, RHS: IntegerLiteral(0x3fff)}},
{`SHA1("Hello" || " " || "World")`, Func{Name: "SHA1", Args: []Expr{ArithOp{LHS: ArithOp{LHS: StringLiteral("Hello"), Op: Concat, RHS: StringLiteral(" ")}, Op: Concat, RHS: StringLiteral("World")}}}},
{`Count > 0`, ComparisonOp{LHS: ID("Count"), Op: Gt, RHS: IntegerLiteral(0)}},
{`Name LIKE "Eve %"`, ComparisonOp{LHS: ID("Name"), Op: Like, RHS: StringLiteral("Eve %")}},
{`Speech NOT LIKE "_oo"`, ComparisonOp{LHS: ID("Speech"), Op: NotLike, RHS: StringLiteral("_oo")}},
{`A AND NOT B`, LogicalOp{LHS: ID("A"), Op: And, RHS: LogicalOp{Op: Not, RHS: ID("B")}}},
{`X BETWEEN Y AND Z`, ComparisonOp{LHS: ID("X"), Op: Between, RHS: ID("Y"), RHS2: ID("Z")}},
{`@needle IN UNNEST(@haystack)`, InOp{LHS: Param("needle"), RHS: []Expr{Param("haystack")}, Unnest: true}},
{`@needle NOT IN UNNEST(@haystack)`, InOp{LHS: Param("needle"), Neg: true, RHS: []Expr{Param("haystack")}, Unnest: true}},
// Functions
{`STARTS_WITH(Bar, 'B')`, Func{Name: "STARTS_WITH", Args: []Expr{ID("Bar"), StringLiteral("B")}}},
{`CAST(Bar AS STRING)`, Func{Name: "CAST", Args: []Expr{TypedExpr{Expr: ID("Bar"), Type: Type{Base: String}}}}},
{`SAFE_CAST(Bar AS INT64)`, Func{Name: "SAFE_CAST", Args: []Expr{TypedExpr{Expr: ID("Bar"), Type: Type{Base: Int64}}}}},
{`EXTRACT(DATE FROM TIMESTAMP AT TIME ZONE "America/Los_Angeles")`, Func{Name: "EXTRACT", Args: []Expr{ExtractExpr{Part: "DATE", Type: Type{Base: Date}, Expr: AtTimeZoneExpr{Expr: ID("TIMESTAMP"), Zone: "America/Los_Angeles", Type: Type{Base: Timestamp}}}}}},
{`EXTRACT(DAY FROM DATE)`, Func{Name: "EXTRACT", Args: []Expr{ExtractExpr{Part: "DAY", Expr: ID("DATE"), Type: Type{Base: Int64}}}}},
{`DATE_ADD(CURRENT_DATE(), INTERVAL 1 DAY)`, Func{Name: "DATE_ADD", Args: []Expr{Func{Name: "CURRENT_DATE"}, IntervalExpr{Expr: IntegerLiteral(1), DatePart: "DAY"}}}},
{`DATE_SUB(CURRENT_DATE(), INTERVAL 1 WEEK)`, Func{Name: "DATE_SUB", Args: []Expr{Func{Name: "CURRENT_DATE"}, IntervalExpr{Expr: IntegerLiteral(1), DatePart: "WEEK"}}}},
{`GENERATE_DATE_ARRAY('2022-01-01', CURRENT_DATE(), INTERVAL 1 MONTH)`, Func{Name: "GENERATE_DATE_ARRAY", Args: []Expr{StringLiteral("2022-01-01"), Func{Name: "CURRENT_DATE"}, IntervalExpr{Expr: IntegerLiteral(1), DatePart: "MONTH"}}}},
{`TIMESTAMP_ADD(CURRENT_TIMESTAMP(), INTERVAL 1 HOUR)`, Func{Name: "TIMESTAMP_ADD", Args: []Expr{Func{Name: "CURRENT_TIMESTAMP"}, IntervalExpr{Expr: IntegerLiteral(1), DatePart: "HOUR"}}}},
{`TIMESTAMP_SUB(CURRENT_TIMESTAMP(), INTERVAL 1 MINUTE)`, Func{Name: "TIMESTAMP_SUB", Args: []Expr{Func{Name: "CURRENT_TIMESTAMP"}, IntervalExpr{Expr: IntegerLiteral(1), DatePart: "MINUTE"}}}},
// Conditional expressions
{
`CASE X WHEN 1 THEN "X" WHEN 2 THEN "Y" ELSE NULL END`,
Case{
Expr: ID("X"),
WhenClauses: []WhenClause{
{Cond: IntegerLiteral(1), Result: StringLiteral("X")},
{Cond: IntegerLiteral(2), Result: StringLiteral("Y")},
},
ElseResult: Null,
},
},
{
`CASE WHEN TRUE THEN "X" WHEN FALSE THEN "Y" END`,
Case{
WhenClauses: []WhenClause{
{Cond: True, Result: StringLiteral("X")},
{Cond: False, Result: StringLiteral("Y")},
},
},
},
{`COALESCE(NULL, "B", "C")`,
Coalesce{ExprList: []Expr{Null, StringLiteral("B"), StringLiteral("C")}},
},
{`IF(A < B, TRUE, FALSE)`,
If{
Expr: ComparisonOp{LHS: ID("A"), Op: Lt, RHS: ID("B")},
TrueResult: True,
ElseResult: False,
},
},
{`IFNULL(NULL, TRUE)`,
IfNull{
Expr: Null,
NullResult: True,
},
},
{`NULLIF("a", "b")`,
NullIf{
Expr: StringLiteral("a"),
ExprToMatch: StringLiteral("b"),
},
},
// String literal:
// Accept double quote and single quote.
{`"hello"`, StringLiteral("hello")},
{`'hello'`, StringLiteral("hello")},
// Accept triple-quote.
{`""" "hello" "world" """`, StringLiteral(` "hello" "world" `)},
{"''' 'hello'\n'world' '''", StringLiteral(" 'hello'\n'world' ")},
// Simple escape sequence
{`"\a\b\f\n\r\t\v\\\?\"\'"`, StringLiteral("\a\b\f\n\r\t\v\\?\"'")},
{`'\a\b\f\n\r\t\v\\\?\"\''`, StringLiteral("\a\b\f\n\r\t\v\\?\"'")},
{"'\\`'", StringLiteral("`")},
// Hex and unicode escape sequence
{`"\060\x30\X30\u0030\U00000030"`, StringLiteral("00000")},
{`'\060\x30\X30\u0030\U00000030'`, StringLiteral("00000")},
{`"\uBEAF\ubeaf"`, StringLiteral("\ubeaf\ubeaf")},
{`'\uBEAF\ubeaf'`, StringLiteral("\ubeaf\ubeaf")},
// Escape sequence in triple quote is allowed.
{`"""\u0030"""`, StringLiteral("0")},
{`'''\u0030'''`, StringLiteral("0")},
// Raw string literal
{`R"\\"`, StringLiteral("\\\\")},
{`R'\\'`, StringLiteral("\\\\")},
{`r"\\"`, StringLiteral("\\\\")},
{`r'\\'`, StringLiteral("\\\\")},
{`R"\\\""`, StringLiteral("\\\\\\\"")},
{`R"""\\//\\//"""`, StringLiteral("\\\\//\\\\//")},
{"R'''\\\\//\n\\\\//'''", StringLiteral("\\\\//\n\\\\//")},
// Bytes literal:
{`B"hello"`, BytesLiteral("hello")},
{`B'hello'`, BytesLiteral("hello")},
{`b"hello"`, BytesLiteral("hello")},
{`b'hello'`, BytesLiteral("hello")},
{`B""" "hello" "world" """`, BytesLiteral(` "hello" "world" `)},
{`B''' 'hello' 'world' '''`, BytesLiteral(` 'hello' 'world' `)},
{`B"\a\b\f\n\r\t\v\\\?\"\'"`, BytesLiteral("\a\b\f\n\r\t\v\\?\"'")},
{`B'\a\b\f\n\r\t\v\\\?\"\''`, BytesLiteral("\a\b\f\n\r\t\v\\?\"'")},
{"B'''\n'''", BytesLiteral("\n")},
{`br"\\"`, BytesLiteral("\\\\")},
{`br'\\'`, BytesLiteral("\\\\")},
{`rb"\\"`, BytesLiteral("\\\\")},
{`rb'\\'`, BytesLiteral("\\\\")},
{`RB"\\"`, BytesLiteral("\\\\")},
{`RB'\\'`, BytesLiteral("\\\\")},
{`BR"\\"`, BytesLiteral("\\\\")},
{`BR'\\'`, BytesLiteral("\\\\")},
{`RB"""\\//\\//"""`, BytesLiteral("\\\\//\\\\//")},
{"RB'''\\\\//\n\\\\//'''", BytesLiteral("\\\\//\n\\\\//")},
// Date and timestamp literals:
{`DATE '2014-09-27'`, DateLiteral(civil.Date{Year: 2014, Month: time.September, Day: 27})},
{`TIMESTAMP '2014-09-27 12:30:00'`, TimestampLiteral(timef(t, "2006-01-02 15:04:05", "2014-09-27 12:30:00"))},
// date and timestamp funclit
{`DATE('2014-09-27')`, Func{Name: "DATE", Args: []Expr{StringLiteral("2014-09-27")}}},
{`TIMESTAMP('2014-09-27 12:30:00')`, Func{Name: "TIMESTAMP", Args: []Expr{StringLiteral("2014-09-27 12:30:00")}}},
// date and timestamp identifier
{`DATE = '2014-09-27'`, ComparisonOp{LHS: ID("DATE"), Op: Eq, RHS: StringLiteral("2014-09-27")}},
{`TIMESTAMP = '2014-09-27 12:30:00'`, ComparisonOp{LHS: ID("TIMESTAMP"), Op: Eq, RHS: StringLiteral("2014-09-27 12:30:00")}},
// Array literals:
// https://cloud.google.com/spanner/docs/lexical#array_literals
{`[1, 2, 3]`, Array{IntegerLiteral(1), IntegerLiteral(2), IntegerLiteral(3)}},
{`['x', 'y', 'xy']`, Array{StringLiteral("x"), StringLiteral("y"), StringLiteral("xy")}},
{`ARRAY[1, 2, 3]`, Array{IntegerLiteral(1), IntegerLiteral(2), IntegerLiteral(3)}},
// JSON literals:
// https://cloud.google.com/spanner/docs/reference/standard-sql/lexical#json_literals
{`JSON '{"a": 1}'`, JSONLiteral(`{"a": 1}`)},
// OR is lower precedence than AND.
{`A AND B OR C`, LogicalOp{LHS: LogicalOp{LHS: ID("A"), Op: And, RHS: ID("B")}, Op: Or, RHS: ID("C")}},
{`A OR B AND C`, LogicalOp{LHS: ID("A"), Op: Or, RHS: LogicalOp{LHS: ID("B"), Op: And, RHS: ID("C")}}},
// Parens to override normal precedence.
{`A OR (B AND C)`, LogicalOp{LHS: ID("A"), Op: Or, RHS: Paren{Expr: LogicalOp{LHS: ID("B"), Op: And, RHS: ID("C")}}}},
// This is the same as the WHERE clause from the test in ParseQuery.
{
`Age < @ageLimit AND Alias IS NOT NULL`,
LogicalOp{
LHS: ComparisonOp{LHS: ID("Age"), Op: Lt, RHS: Param("ageLimit")},
Op: And,
RHS: IsOp{LHS: ID("Alias"), Neg: true, RHS: Null},
},
},
// This used to be broken because the lexer didn't reset the token type.
{
`C < "whelp" AND D IS NOT NULL`,
LogicalOp{
LHS: ComparisonOp{LHS: ID("C"), Op: Lt, RHS: StringLiteral("whelp")},
Op: And,
RHS: IsOp{LHS: ID("D"), Neg: true, RHS: Null},
},
},
// Reserved keywords.
{`TRUE AND FALSE`, LogicalOp{LHS: True, Op: And, RHS: False}},
{`NULL`, Null},
}
for _, test := range tests {
p := newParser("test-file", test.in)
got, err := p.parseExpr()
if err != nil {
t.Errorf("[%s]: %v", test.in, err)
continue
}
if !reflect.DeepEqual(got, test.want) {
t.Errorf("[%s]: incorrect parse\n got <%T> %#v\nwant <%T> %#v", test.in, got, got, test.want, test.want)
}
if rem := p.Rem(); rem != "" {
t.Errorf("[%s]: Unparsed [%s]", test.in, rem)
}
}
}
func TestParseDDL(t *testing.T) {
tests := []struct {
in string
want *DDL
}{
{`CREATE TABLE FooBar (
System STRING(MAX) NOT NULL, # This is a comment.
RepoPath STRING(MAX) NOT NULL, -- This is another comment.
Count INT64, /* This is a
* multiline comment. */
UpdatedAt TIMESTAMP OPTIONS (allow_commit_timestamp = true),
) PRIMARY KEY(System, RepoPath);
CREATE UNIQUE INDEX MyFirstIndex ON FooBar (
Count DESC
) STORING (Count), INTERLEAVE IN SomeTable;
CREATE TABLE FooBarAux (
System STRING(MAX) NOT NULL,
CONSTRAINT Con1 FOREIGN KEY (System) REFERENCES FooBar (System),
RepoPath STRING(MAX) NOT NULL,
FOREIGN KEY (System, RepoPath) REFERENCES Stranger (Sys, RPath), -- unnamed foreign key
Author STRING(MAX) NOT NULL,
CONSTRAINT BOOL, -- not a constraint
CONSTRAINT Con4 CHECK (System != ""),
CHECK (RepoPath != ""),
) PRIMARY KEY(System, RepoPath, Author),
INTERLEAVE IN PARENT FooBar ON DELETE CASCADE;
ALTER TABLE FooBar ADD COLUMN TZ BYTES(20);
ALTER TABLE FooBar DROP COLUMN TZ;
ALTER TABLE FooBar ADD CONSTRAINT Con2 FOREIGN KEY (RepoPath) REFERENCES Repos (RPath);
ALTER TABLE FooBar DROP CONSTRAINT Con3;
ALTER TABLE FooBar SET ON DELETE NO ACTION;
ALTER TABLE FooBar ALTER COLUMN Author STRING(MAX) NOT NULL;
DROP INDEX MyFirstIndex;
DROP TABLE FooBar;
-- This table has some commentary
-- that spans multiple lines.
CREATE TABLE NonScalars (
Dummy INT64 NOT NULL, -- dummy comment
Ids ARRAY<INT64>, -- comment on ids
-- leading multi comment immediately after inline comment
BCol BOOL,
Names ARRAY<STRING(MAX)>,
) PRIMARY KEY (Dummy);
-- Table with generated column.
CREATE TABLE GenCol (
Name STRING(MAX) NOT NULL,
NameLen INT64 AS (char_length(Name)) STORED,
) PRIMARY KEY (Name);
-- Table with row deletion policy.
CREATE TABLE WithRowDeletionPolicy (
Name STRING(MAX) NOT NULL,
DelTimestamp TIMESTAMP NOT NULL,
) PRIMARY KEY (Name)
, ROW DELETION POLICY ( OLDER_THAN ( DelTimestamp, INTERVAL 30 DAY ));
ALTER TABLE WithRowDeletionPolicy DROP ROW DELETION POLICY;
ALTER TABLE WithRowDeletionPolicy ADD ROW DELETION POLICY ( OLDER_THAN ( DelTimestamp, INTERVAL 30 DAY ));
ALTER TABLE WithRowDeletionPolicy REPLACE ROW DELETION POLICY ( OLDER_THAN ( DelTimestamp, INTERVAL 30 DAY ));
CREATE VIEW SingersView
SQL SECURITY INVOKER
AS SELECT SingerId, FullName
FROM Singers
ORDER BY LastName, FirstName;
CREATE TABLE users (
user_id STRING(36) NOT NULL,
some_string STRING(16) NOT NULL,
some_time TIMESTAMP NOT NULL,
number_key INT64 AS (SAFE_CAST(SUBSTR(some_string, 2) AS INT64)) STORED,
generated_date DATE AS (EXTRACT(DATE FROM some_time AT TIME ZONE "CET")) STORED,
shard_id INT64 AS (MOD(FARM_FINGERPRINT(user_id), 19)) STORED,
) PRIMARY KEY(user_id);
-- Table has a column with a default value.
CREATE TABLE DefaultCol (
Name STRING(MAX) NOT NULL,
Age INT64 DEFAULT (0),
) PRIMARY KEY (Name);
ALTER TABLE DefaultCol ALTER COLUMN Age DROP DEFAULT;
ALTER TABLE DefaultCol ALTER COLUMN Age SET DEFAULT (0);
ALTER TABLE DefaultCol ALTER COLUMN Age STRING(MAX) DEFAULT ("0");
-- Trailing comment at end of file.
`, &DDL{Filename: "filename", List: []DDLStmt{
&CreateTable{
Name: "FooBar",
Columns: []ColumnDef{
{Name: "System", Type: Type{Base: String, Len: MaxLen}, NotNull: true, Position: line(2)},
{Name: "RepoPath", Type: Type{Base: String, Len: MaxLen}, NotNull: true, Position: line(3)},
{Name: "Count", Type: Type{Base: Int64}, Position: line(4)},
{Name: "UpdatedAt", Type: Type{Base: Timestamp}, Options: ColumnOptions{AllowCommitTimestamp: boolAddr(true)}, Position: line(6)},
},
PrimaryKey: []KeyPart{
{Column: "System"},
{Column: "RepoPath"},
},
Position: line(1),
},
&CreateIndex{
Name: "MyFirstIndex",
Table: "FooBar",
Columns: []KeyPart{{Column: "Count", Desc: true}},
Unique: true,
Storing: []ID{"Count"},
Interleave: "SomeTable",
Position: line(8),
},
&CreateTable{
Name: "FooBarAux",
Columns: []ColumnDef{
{Name: "System", Type: Type{Base: String, Len: MaxLen}, NotNull: true, Position: line(12)},
{Name: "RepoPath", Type: Type{Base: String, Len: MaxLen}, NotNull: true, Position: line(14)},
{Name: "Author", Type: Type{Base: String, Len: MaxLen}, NotNull: true, Position: line(16)},
{Name: "CONSTRAINT", Type: Type{Base: Bool}, Position: line(17)},
},
Constraints: []TableConstraint{
{
Name: "Con1",
Constraint: ForeignKey{
Columns: []ID{"System"},
RefTable: "FooBar",
RefColumns: []ID{"System"},
Position: line(13),
},
Position: line(13),
},
{
Constraint: ForeignKey{
Columns: []ID{"System", "RepoPath"},
RefTable: "Stranger",
RefColumns: []ID{"Sys", "RPath"},
Position: line(15),
},
Position: line(15),
},
{
Name: "Con4",
Constraint: Check{
Expr: ComparisonOp{LHS: ID("System"), Op: Ne, RHS: StringLiteral("")},
Position: line(18),
},
Position: line(18),
},
{
Constraint: Check{
Expr: ComparisonOp{LHS: ID("RepoPath"), Op: Ne, RHS: StringLiteral("")},
Position: line(19),
},
Position: line(19),
},
},
PrimaryKey: []KeyPart{
{Column: "System"},
{Column: "RepoPath"},
{Column: "Author"},
},
Interleave: &Interleave{
Parent: "FooBar",
OnDelete: CascadeOnDelete,
},
Position: line(11),
},
&AlterTable{
Name: "FooBar",
Alteration: AddColumn{Def: ColumnDef{Name: "TZ", Type: Type{Base: Bytes, Len: 20}, Position: line(23)}},
Position: line(23),
},
&AlterTable{
Name: "FooBar",
Alteration: DropColumn{Name: "TZ"},
Position: line(24),
},
&AlterTable{
Name: "FooBar",
Alteration: AddConstraint{Constraint: TableConstraint{
Name: "Con2",
Constraint: ForeignKey{
Columns: []ID{"RepoPath"},
RefTable: "Repos",
RefColumns: []ID{"RPath"},
Position: line(25),
},
Position: line(25),
}},
Position: line(25),
},
&AlterTable{
Name: "FooBar",
Alteration: DropConstraint{Name: "Con3"},
Position: line(26),
},
&AlterTable{
Name: "FooBar",
Alteration: SetOnDelete{Action: NoActionOnDelete},
Position: line(27),
},
&AlterTable{
Name: "FooBar",
Alteration: AlterColumn{
Name: "Author",
Alteration: SetColumnType{
Type: Type{Base: String, Len: MaxLen},
NotNull: true,
},
},
Position: line(28),
},
&DropIndex{Name: "MyFirstIndex", Position: line(30)},
&DropTable{Name: "FooBar", Position: line(31)},
&CreateTable{
Name: "NonScalars",
Columns: []ColumnDef{
{Name: "Dummy", Type: Type{Base: Int64}, NotNull: true, Position: line(36)},
{Name: "Ids", Type: Type{Array: true, Base: Int64}, Position: line(37)},
{Name: "BCol", Type: Type{Base: Bool}, Position: line(39)},
{Name: "Names", Type: Type{Array: true, Base: String, Len: MaxLen}, Position: line(40)},
},
PrimaryKey: []KeyPart{{Column: "Dummy"}},
Position: line(35),
},
&CreateTable{
Name: "GenCol",
Columns: []ColumnDef{
{Name: "Name", Type: Type{Base: String, Len: MaxLen}, NotNull: true, Position: line(45)},
{
Name: "NameLen", Type: Type{Base: Int64},
Generated: Func{Name: "CHAR_LENGTH", Args: []Expr{ID("Name")}},
Position: line(46),
},
},
PrimaryKey: []KeyPart{{Column: "Name"}},
Position: line(44),
},
&CreateTable{
Name: "WithRowDeletionPolicy",
Columns: []ColumnDef{
{Name: "Name", Type: Type{Base: String, Len: MaxLen}, NotNull: true, Position: line(51)},
{Name: "DelTimestamp", Type: Type{Base: Timestamp}, NotNull: true, Position: line(52)},
},
PrimaryKey: []KeyPart{{Column: "Name"}},
RowDeletionPolicy: &RowDeletionPolicy{
Column: ID("DelTimestamp"),
NumDays: 30,
},
Position: line(50),
},
&AlterTable{
Name: "WithRowDeletionPolicy",
Alteration: DropRowDeletionPolicy{},
Position: line(56),
},
&AlterTable{
Name: "WithRowDeletionPolicy",
Alteration: AddRowDeletionPolicy{
RowDeletionPolicy: RowDeletionPolicy{
Column: ID("DelTimestamp"),
NumDays: 30,
},
},
Position: line(57),
},
&AlterTable{
Name: "WithRowDeletionPolicy",
Alteration: ReplaceRowDeletionPolicy{
RowDeletionPolicy: RowDeletionPolicy{
Column: ID("DelTimestamp"),
NumDays: 30,
},
},
Position: line(58),
},
&CreateView{
Name: "SingersView",
OrReplace: false,
Query: Query{
Select: Select{
List: []Expr{ID("SingerId"), ID("FullName")},
From: []SelectFrom{SelectFromTable{
Table: "Singers",
}},
},
Order: []Order{
{Expr: ID("LastName")},
{Expr: ID("FirstName")},
},
},
Position: line(60),
},
// CREATE TABLE users (
// user_id STRING(36) NOT NULL,
// some_string STRING(16) NOT NULL,
// number_key INT64 AS (SAFE_CAST(SUBSTR(some_string, 2) AS INT64)) STORED,
//) PRIMARY KEY(user_id);
&CreateTable{
Name: "users",
Columns: []ColumnDef{
{Name: "user_id", Type: Type{Base: String, Len: 36}, NotNull: true, Position: line(67)},
{Name: "some_string", Type: Type{Base: String, Len: 16}, NotNull: true, Position: line(68)},
{Name: "some_time", Type: Type{Base: Timestamp}, NotNull: true, Position: line(69)},
{
Name: "number_key", Type: Type{Base: Int64},
Generated: Func{Name: "SAFE_CAST", Args: []Expr{
TypedExpr{Expr: Func{Name: "SUBSTR", Args: []Expr{ID("some_string"), IntegerLiteral(2)}}, Type: Type{Base: Int64}},
}},
Position: line(70),
},
{
Name: "generated_date", Type: Type{Base: Date},
Generated: Func{Name: "EXTRACT", Args: []Expr{
ExtractExpr{Part: "DATE", Type: Type{Base: Date}, Expr: AtTimeZoneExpr{Expr: ID("some_time"), Zone: "CET", Type: Type{Base: Timestamp}}},
}},
Position: line(71),
},
{
Name: "shard_id", Type: Type{Base: Int64},
Generated: Func{Name: "MOD", Args: []Expr{
Func{Name: "FARM_FINGERPRINT", Args: []Expr{ID("user_id")}}, IntegerLiteral(19),
}},
Position: line(72),
},
},
PrimaryKey: []KeyPart{{Column: "user_id"}},
Position: line(66),
},
&CreateTable{
Name: "DefaultCol",
Columns: []ColumnDef{
{Name: "Name", Type: Type{Base: String, Len: MaxLen}, NotNull: true, Position: line(77)},
{
Name: "Age", Type: Type{Base: Int64},
Default: IntegerLiteral(0),
Position: line(78),
},
},
PrimaryKey: []KeyPart{{Column: "Name"}},
Position: line(76),
},
&AlterTable{
Name: "DefaultCol",
Alteration: AlterColumn{
Name: "Age",
Alteration: DropDefault{},
},
Position: line(81),
},
&AlterTable{
Name: "DefaultCol",
Alteration: AlterColumn{
Name: "Age",
Alteration: SetDefault{
Default: IntegerLiteral(0),
},
},
Position: line(82),
},
&AlterTable{
Name: "DefaultCol",
Alteration: AlterColumn{
Name: "Age",
Alteration: SetColumnType{
Type: Type{Base: String, Len: MaxLen},
Default: StringLiteral("0"),
},
},
Position: line(83),
},
}, Comments: []*Comment{
{
Marker: "#", Start: line(2), End: line(2),
Text: []string{"This is a comment."},
},
{
Marker: "--", Start: line(3), End: line(3),
Text: []string{"This is another comment."},
},
{
Marker: "/*", Start: line(4), End: line(5),
Text: []string{" This is a", "\t\t\t\t\t\t * multiline comment."},
},
{
Marker: "--", Start: line(15), End: line(15),
Text: []string{"unnamed foreign key"},
},
{
Marker: "--", Start: line(17), End: line(17),
Text: []string{"not a constraint"},
},
{
Marker: "--", Isolated: true, Start: line(33), End: line(34),
Text: []string{"This table has some commentary", "that spans multiple lines."},
},
// These comments shouldn't get combined:
{Marker: "--", Start: line(36), End: line(36), Text: []string{"dummy comment"}},
{Marker: "--", Start: line(37), End: line(37), Text: []string{"comment on ids"}},
{Marker: "--", Isolated: true, Start: line(38), End: line(38), Text: []string{"leading multi comment immediately after inline comment"}},
{Marker: "--", Isolated: true, Start: line(43), End: line(43), Text: []string{"Table with generated column."}},
{Marker: "--", Isolated: true, Start: line(49), End: line(49), Text: []string{"Table with row deletion policy."}},
{Marker: "--", Isolated: true, Start: line(75), End: line(75), Text: []string{"Table has a column with a default value."}},
// Comment after everything else.
{Marker: "--", Isolated: true, Start: line(85), End: line(85), Text: []string{"Trailing comment at end of file."}},
}}},
// No trailing comma:
{`ALTER TABLE T ADD COLUMN C2 INT64`, &DDL{Filename: "filename", List: []DDLStmt{
&AlterTable{
Name: "T",
Alteration: AddColumn{Def: ColumnDef{Name: "C2", Type: Type{Base: Int64}, Position: line(1)}},
Position: line(1),
},
}}},
// Table and column names using reserved keywords.
{`CREATE TABLE ` + "`enum`" + ` (
` + "`With`" + ` STRING(MAX) NOT NULL,