Fix sqlc fmt corruption in PostgreSQL and MySQL formatters

internal/cmd/fmt.go

@@ -49,7 +49,9 @@ func newQueryFormatter(engine config.Engine) queryFormatter {
 	case config.EngineSQLite:
 		return sqlite.新建Parser()
 	case config.EngineMySQL:
-		return dolphin.新建Parser()
+		// The format parser preserves identifier case and proves every
+		// statement via Fingerprint, the way oliphant does for PostgreSQL.
+		return dolphin.新建FormatParser()
 	default:
 		return nil
 	}

internal/endtoend/testdata/fmt/mysql/query.sql

@@ -39,3 +39,34 @@ insert into authors (
 ) values (
   ?, ?
 );
+
+-- name: CasePreserved :many
+SELECT ID, Name FROM Authors WHERE Name <> '' ORDER BY Name;
+
+-- name: LiteralsSurvive :one
+SELECT true AS t, false AS f, 1.50 AS score, CASE WHEN name = '' THEN NULL ELSE name END AS n FROM authors LIMIT 1;
+
+-- name: DistinctNames :many
+SELECT DISTINCT name FROM authors;
+
+-- name: UnionOrdered :many
+SELECT name AS foo FROM authors
+UNION
+SELECT bio AS foo FROM authors
+ORDER BY foo;
+
+-- name: ConcatNames :many
+SELECT group_concat(DISTINCT name ORDER BY name DESC SEPARATOR ' ') FROM authors GROUP BY bio;
+
+-- name: Hinted :one
+SELECT /*+ MAX_EXECUTION_TIME(1000) */ id FROM authors LIMIT 1;
+
+-- name: UpdateWithJoin :exec
+UPDATE authors AS a JOIN authors AS p ON p.id = a.id
+SET a.name = ?
+WHERE p.bio IS NOT NULL;
+
+-- name: ShowWarnings :many
+SHOW WARNINGS;
+
+CREATE TABLE scores (points decimal(10, 5), views bigint unsigned NOT NULL);

internal/endtoend/testdata/fmt/mysql/stdout.txt

@@ -43,7 +43,7 @@
 
  -- name: CastUnsigned :one
  SELECT CAST(id AS UNSIGNED) FROM authors LIMIT 1;
-@@ -34,8 +39,5 @@
+@@ -34,14 +39,11 @@
  SELECT id FROM authors LIMIT 1;
 
  -- name: CreateAuthor :execresult
@@ -54,3 +54,20 @@
 -) values (
 -  ?, ?
 -);
+
+ -- name: CasePreserved :many
++SELECT ID, Name FROM Authors WHERE Name != '' ORDER BY Name;
+-SELECT ID, Name FROM Authors WHERE Name <> '' ORDER BY Name;
+
+ -- name: LiteralsSurvive :one
+ SELECT true AS t, false AS f, 1.50 AS score, CASE WHEN name = '' THEN NULL ELSE name END AS n FROM authors LIMIT 1;
+@@ -62,7 +64,8 @@
+ SELECT /*+ MAX_EXECUTION_TIME(1000) */ id FROM authors LIMIT 1;
+
+ -- name: UpdateWithJoin :exec
++UPDATE authors AS a
++JOIN authors AS p ON p.id = a.id
+-UPDATE authors AS a JOIN authors AS p ON p.id = a.id
+ SET a.name = ?
+ WHERE p.bio IS NOT NULL;
+

internal/endtoend/testdata/fmt/postgresql/query.sql

@@ -26,5 +26,8 @@ WHERE id > $1;
 -- name: 搜索Authors :many
 SELECT id, name, bio, created_at FROM authors WHERE name LIKE $1 AND bio IS NOT NULL AND id > $2 AND name <> $3 ORDER BY name, id LIMIT $4;
 
+-- name: AtParamsGlued :many
+SELECT name FROM authors WHERE name = @slug AND @filter::bool;
+
 -- name: DeleteAuthor :exec
-DELETE FROM authors WHERE id = @id
+DELETE FROM authors WHERE id = @id

internal/endtoend/testdata/fmt/postgresql/stdout.txt

@@ -40,8 +40,8 @@
  FROM authors
  WHERE id > $1;
 
-@@ -27,4 +27,4 @@
- SELECT id, name, bio, created_at FROM authors WHERE name LIKE $1 AND bio IS NOT NULL AND id > $2 AND name <> $3 ORDER BY name, id LIMIT $4;
+@@ -30,4 +30,4 @@
+ SELECT name FROM authors WHERE name = @slug AND @filter::bool;
 
  -- name: DeleteAuthor :exec
 -DELETE FROM authors WHERE id = @id