feat(sqlite): Start expanding support (#1410)

Support the following features:
* CREATE TABLE LIKE
* ALTER TABLE DROP COLUMN
* SELECT count(*) ...

Author: PadraigK

go.mod

@@ -3,7 +3,7 @@ module github.com/kyleconroy/sqlc
 go 1.17
 
 require (
-	github.com/antlr/antlr4/runtime/Go/antlr v0.0.0-20211208212222-82c441726976
+	github.com/antlr/antlr4/runtime/Go/antlr v0.0.0-20220209173558-ad29539cd2e9
 	github.com/davecgh/go-spew v1.1.1
 	github.com/go-sql-driver/mysql v1.6.0
 	github.com/google/go-cmp v0.5.7

go.sum

@@ -59,6 +59,8 @@ github.com/alecthomas/units v0.0.0-20190717042225-c3de453c63f4/go.mod h1:ybxpYRF
 github.com/antihax/optional v1.0.0/go.mod h1:uupD/76wgC+ih3iEmQUL+0Ugr19nfwCT1kdvxnR2qWY=
 github.com/antlr/antlr4/runtime/Go/antlr v0.0.0-20211208212222-82c441726976 h1:vvvbSbmHS27Ayx0fAeFAR4chZoobj9RTYMlTIouSKgY=
 github.com/antlr/antlr4/runtime/Go/antlr v0.0.0-20211208212222-82c441726976/go.mod h1:F7bn7fEU90QkQ3tnmaTx3LTKLEDqnwWODIYppRQ5hnY=
+github.com/antlr/antlr4/runtime/Go/antlr v0.0.0-20220209173558-ad29539cd2e9 h1:zvkJv+9Pxm1nnEMcKnShREt4qtduHKz4iw4AB4ul0Ao=
+github.com/antlr/antlr4/runtime/Go/antlr v0.0.0-20220209173558-ad29539cd2e9/go.mod h1:F7bn7fEU90QkQ3tnmaTx3LTKLEDqnwWODIYppRQ5hnY=
 github.com/armon/circbuf v0.0.0-20150827004946-bbbad097214e/go.mod h1:3U/XgcO3hCbHZ8TKRvWD2dDTCfh9M9ya+I9JpbB7O8o=
 github.com/armon/go-metrics v0.0.0-20180917152333-f0300d1749da/go.mod h1:Q73ZrmVTwzkszR9V5SSuryQ31EELlFMUz1kKyl939pY=
 github.com/armon/go-metrics v0.3.10/go.mod h1:4O98XIr/9W0sxpJ8UaYkvjk10Iff7SnFrb4QAOwNTFc=

internal/compiler/engine.go

@@ -24,7 +24,7 @@ func NewCompiler(conf config.SQL, combo config.CombinedSettings) *Compiler {
 	switch conf.Engine {
 	case config.EngineXLemon:
 		c.parser = sqlite.NewParser()
-		c.catalog = catalog.New("main")
+		c.catalog = sqlite.NewCatalog()
 	case config.EngineMySQL:
 		c.parser = dolphin.NewParser()
 		c.catalog = dolphin.NewCatalog()

internal/endtoend/testdata/count_star/sqlite/go/db.go

@@ -0,0 +1,5 @@
+-- name: CountStarLower :one
+SELECT count(*) FROM bar;
+
+-- name: CountStarUpper :one
+SELECT COUNT(*) FROM bar;

internal/endtoend/testdata/count_star/sqlite/go/models.go

@@ -0,0 +1 @@
+CREATE TABLE bar (id BIGINT not null);

internal/endtoend/testdata/count_star/sqlite/go/query.sql.go

@@ -0,0 +1,12 @@
+{
+  "version": "1",
+  "packages": [
+    {
+      "path": "go",
+      "name": "querytest",
+      "engine": "_lemon",
+      "schema": "schema.sql",
+      "queries": "query.sql"
+    }
+  ]
+}

internal/endtoend/testdata/count_star/sqlite/query.sql

@@ -0,0 +1,2 @@
+-- name: Placeholder :exec
+SELECT 1;

internal/endtoend/testdata/count_star/sqlite/schema.sql

@@ -0,0 +1,2 @@
+CREATE TABLE foo (bar text, baz text);
+ALTER TABLE foo DROP COLUMN bar;

internal/endtoend/testdata/count_star/sqlite/sqlc.json

@@ -0,0 +1,12 @@
+{
+  "version": "1",
+  "packages": [
+    {
+      "path": "go",
+      "engine": "_lemon",
+      "name": "querytest",
+      "schema": "schema.sql",
+      "queries": "query.sql"
+    }
+  ]
+}

internal/endtoend/testdata/ddl_alter_table_drop_column/sqlite/go/db.go

@@ -0,0 +1,2 @@
+-- name: Placeholder :exec
+SELECT 1;

internal/endtoend/testdata/ddl_alter_table_drop_column/sqlite/go/models.go

@@ -0,0 +1 @@
+CREATE TABLE venues (name text);

internal/endtoend/testdata/ddl_alter_table_drop_column/sqlite/go/query.sql.go

@@ -0,0 +1,12 @@
+{
+  "version": "1",
+  "packages": [
+    {
+      "path": "go",
+      "engine": "_lemon",
+      "name": "querytest",
+      "schema": "schema.sql",
+      "queries": "query.sql"
+    }
+  ]
+}

internal/endtoend/testdata/ddl_alter_table_drop_column/sqlite/query.sql

@@ -3,6 +3,16 @@ package sqlite
 import "github.com/kyleconroy/sqlc/internal/sql/catalog"
 
 func NewCatalog() *catalog.Catalog {
-	c := catalog.New("main")
-	return c
+	def := "main"
+	return &catalog.Catalog{
+		DefaultSchema: def,
+		Schemas: []*catalog.Schema{
+			defaultSchema(def),
+		},
+		Extensions: map[string]struct{}{},
+	}
+}
+
+func newTestCatalog() *catalog.Catalog {
+	return catalog.New("main")
 }

internal/endtoend/testdata/ddl_alter_table_drop_column/sqlite/schema.sql

@@ -239,13 +239,13 @@ func TestUpdate(t *testing.T) {
 				t.Fatal(err)
 			}
 
-			c := NewCatalog()
+			c := newTestCatalog()
 			if err := c.Build(stmts); err != nil {
 				t.Log(test.stmt)
 				t.Fatal(err)
 			}
 
-			e := NewCatalog()
+			e := newTestCatalog()
 			if test.s != nil {
 				var replaced bool
 				for i := range e.Schemas {