Upgrade Go version to 1.26.0

.github/workflows/build.yml

@@ -12,7 +12,7 @@ jobs:
     - uses: actions/checkout@v6
     - uses: actions/setup-go@v6
       with:
-        go-version: '1.25.0'
+        go-version: '1.26.0'
     - name: install ./...
       run: go build ./...
       env:

.github/workflows/ci-kotlin.yml

@@ -13,7 +13,7 @@ jobs:
       - uses: actions/checkout@v6
       - uses: actions/setup-go@v6
         with:
-          go-version: '1.24.1'
+          go-version: '1.26.0'
       - name: install ./...
         run: go install ./...
       - uses: actions/checkout@v6

.github/workflows/ci-python.yml

@@ -13,7 +13,7 @@ jobs:
       - uses: actions/checkout@v6
       - uses: actions/setup-go@v6
         with:
-          go-version: '1.24.1'
+          go-version: '1.26.0'
       - name: install ./...
         run: go install ./...
       - uses: actions/checkout@v6

.github/workflows/ci-typescript.yml

@@ -13,7 +13,7 @@ jobs:
       - uses: actions/checkout@v6
       - uses: actions/setup-go@v6
         with:
-          go-version: '1.24.1'
+          go-version: '1.26.0'
       - name: install ./...
         run: go install ./...
       - uses: actions/checkout@v6

.github/workflows/ci.yml

@@ -16,7 +16,7 @@ jobs:
     - uses: actions/checkout@v6
     - uses: actions/setup-go@v6
       with:
-        go-version: '1.25.0'
+        go-version: '1.26.0'
     - run: go build ./...
       env:
         CGO_ENABLED: "0"
@@ -28,7 +28,7 @@ jobs:
     - uses: actions/checkout@v6
     - uses: actions/setup-go@v6
       with:
-        go-version: '1.25.0'
+        go-version: '1.26.0'
 
     - name: install gotestsum
       run: go install gotest.tools/gotestsum@latest

.gitignore

@@ -1,3 +1,4 @@
+/sqlc
 /.idea/
 __pycache__
 .DS_Store

CLAUDE.md

@@ -6,17 +6,21 @@ This document provides essential information for working with the sqlc codebase,
 
 ### Prerequisites
 
-- **Go 1.25.0+** - Required for building and testing
+- **Go 1.26.0+** - Required for building and testing
 - **Docker & Docker Compose** - Required for integration tests with databases (local development)
 - **Git** - For version control
 
 ## Claude Code Remote Environment Setup
 
 When running in the Claude Code remote environment (or any environment without Docker), you can install PostgreSQL and MySQL natively. The test framework automatically detects and uses native database installations.
 
+### Network Proxy (Pre-configured)
+
+The Claude Code remote environment routes outbound traffic through an HTTP proxy via the `HTTP_PROXY` and `HTTPS_PROXY` environment variables. **Go module operations (`go mod tidy`, `go mod download`, `go get`, etc.) work automatically** because Go's toolchain respects these variables. No extra configuration is needed for the Go module proxy (`proxy.golang.org`) or checksum database (`sum.golang.org`).
+
 ### Step 1: Configure apt Proxy (Required in Remote Environment)
 
-The Claude Code remote environment requires an HTTP proxy for apt. Configure it:
+The apt package manager needs its own proxy configuration since it does not read `HTTP_PROXY`:
 
 ```bash
 bash -c 'echo "Acquire::http::Proxy \"$http_proxy\";"' | sudo tee /etc/apt/apt.conf.d/99proxy
@@ -306,9 +310,13 @@ POSTGRESQL_SERVER_URI="postgres://postgres:mysecretpassword@localhost:5432/postg
 
 ## Common Issues & Solutions
 
-### Network Connectivity Issues
+### Network Connectivity / Go Module Proxy Issues
+
+In the Claude Code remote environment, Go module fetching works automatically via the `HTTP_PROXY`/`HTTPS_PROXY` environment variables. If you see errors about `storage.googleapis.com` or `proxy.golang.org`:
 
-If you see errors about `storage.googleapis.com`, the Go proxy may be unreachable. Tests may still pass for packages that don't require network dependencies.
+1. **Verify proxy vars are set:** `echo $HTTP_PROXY` (should be non-empty in the remote environment)
+2. **Test connectivity:** `go mod download 2>&1 | head` to check for errors
+3. **If proxy is not set** (e.g., local development without Docker), Go will try to reach `proxy.golang.org` directly, which requires internet access
 
 ### Test Timeouts
 

Dockerfile

@@ -1,5 +1,5 @@
 # STEP 1: Build sqlc
-FROM golang:1.25.5 AS builder
+FROM golang:1.26.0 AS builder
 
 COPY . /workspace
 WORKDIR /workspace

go.mod

@@ -1,6 +1,6 @@
 module github.com/sqlc-dev/sqlc
 
-go 1.24.7
+go 1.26.0
 
 require (
 	github.com/antlr4-go/antlr/v4 v4.13.1

internal/cmd/cmd.go

@@ -100,7 +100,7 @@ var initCmd = &cobra.Command{
 		if err != nil {
 			return err
 		}
-		var yamlConfig interface{}
+		var yamlConfig any
 		if useV1 {
 			yamlConfig = config.V1GenerateSettings{Version: "1"}
 		} else {

internal/cmd/createdb.go

@@ -47,7 +47,6 @@ func CreateDB(ctx context.Context, dir, filename, querySetName string, o *Option
 	var queryset *config.SQL
 	var count int
 	for _, sql := range conf.SQL {
-		sql := sql
 		if querySetName != "" && sql.Name != querySetName {
 			continue
 		}

internal/codegen/golang/field.go

@@ -97,23 +97,23 @@ func toPascalCase(s string) string {
 }
 
 func toCamelInitCase(name string, initUpper bool) string {
-	out := ""
+	var out strings.Builder
 	for i, p := range strings.Split(name, "_") {
 		if !initUpper && i == 0 {
-			out += p
+			out.WriteString(p)
 			continue
 		}
 		if p == "id" {
-			out += "ID"
+			out.WriteString("ID")
 		} else {
-			out += strings.Title(p)
+			out.WriteString(strings.Title(p))
 		}
 	}
-	return out
+	return out.String()
 }
 
 func toJsonCamelCase(name string, idUppercase bool) string {
-	out := ""
+	var out strings.Builder
 	idStr := "Id"
 
 	if idUppercase {
@@ -122,16 +122,16 @@ func toJsonCamelCase(name string, idUppercase bool) string {
 
 	for i, p := range strings.Split(name, "_") {
 		if i == 0 {
-			out += p
+			out.WriteString(p)
 			continue
 		}
 		if p == "id" {
-			out += idStr
+			out.WriteString(idStr)
 		} else {
-			out += strings.Title(p)
+			out.WriteString(strings.Title(p))
 		}
 	}
-	return out
+	return out.String()
 }
 
 func toLowerCase(str string) string {

internal/codegen/golang/gen.go

@@ -7,6 +7,7 @@ import (
 	"errors"
 	"fmt"
 	"go/format"
+	"slices"
 	"strings"
 	"text/template"
 
@@ -344,10 +345,8 @@ func usesCopyFrom(queries []Query) bool {
 
 func usesBatch(queries []Query) bool {
 	for _, q := range queries {
-		for _, cmd := range []string{metadata.CmdBatchExec, metadata.CmdBatchMany, metadata.CmdBatchOne} {
-			if q.Cmd == cmd {
-				return true
-			}
+		if slices.Contains([]string{metadata.CmdBatchExec, metadata.CmdBatchMany, metadata.CmdBatchOne}, q.Cmd) {
+			return true
 		}
 	}
 	return false

internal/codegen/golang/go_type.go

@@ -1,6 +1,7 @@
 package golang
 
 import (
+	"maps"
 	"strings"
 
 	"github.com/sqlc-dev/sqlc/internal/codegen/golang/opts"
@@ -15,9 +16,7 @@ func addExtraGoStructTags(tags map[string]string, req *plugin.GenerateRequest, o
 			continue
 		}
 		if override.MatchesColumn(col) {
-			for k, v := range oride.GoType.StructTags {
-				tags[k] = v
-			}
+			maps.Copy(tags, oride.GoType.StructTags)
 			continue
 		}
 		if !override.Matches(col.Table, req.Catalog.DefaultSchema) {
@@ -33,9 +32,7 @@ func addExtraGoStructTags(tags map[string]string, req *plugin.GenerateRequest, o
 			continue
 		}
 		// Add the extra tags.
-		for k, v := range oride.GoType.StructTags {
-			tags[k] = v
-		}
+		maps.Copy(tags, oride.GoType.StructTags)
 	}
 }
 

internal/codegen/golang/opts/go_type.go

@@ -51,7 +51,7 @@ func (o *GoType) UnmarshalJSON(data []byte) error {
 	return nil
 }
 
-func (o *GoType) UnmarshalYAML(unmarshal func(interface{}) error) error {
+func (o *GoType) UnmarshalYAML(unmarshal func(any) error) error {
 	var spec string
 	if err := unmarshal(&spec); err == nil {
 		*o = GoType{Spec: spec}

internal/codegen/golang/result.go

@@ -168,17 +168,17 @@ func paramName(p *plugin.Parameter) string {
 }
 
 func argName(name string) string {
-	out := ""
+	var out strings.Builder
 	for i, p := range strings.Split(name, "_") {
 		if i == 0 {
-			out += strings.ToLower(p)
+			out.WriteString(strings.ToLower(p))
 		} else if p == "id" {
-			out += "ID"
+			out.WriteString("ID")
 		} else {
-			out += strings.Title(p)
+			out.WriteString(strings.Title(p))
 		}
 	}
-	return out
+	return out.String()
 }
 
 func buildQueries(req *plugin.GenerateRequest, options *opts.Options, structs []Struct) ([]Query, error) {

internal/codegen/golang/struct.go

@@ -31,7 +31,7 @@ func StructName(name string, options *opts.Options) string {
 		return rune('_')
 	}, name)
 
-	for _, p := range strings.Split(name, "_") {
+	for p := range strings.SplitSeq(name, "_") {
 		if _, found := options.InitialismsMap[p]; found {
 			out += strings.ToUpper(p)
 		} else {

internal/compiler/output_columns.go

@@ -517,7 +517,6 @@ func (c *Compiler) sourceTables(qc *QueryCatalog, node ast.Node) ([]*Table, erro
 
 	var tables []*Table
 	for _, item := range list.Items {
-		item := item
 		switch n := item.(type) {
 
 		case *ast.RangeFunction:

internal/config/config.go

@@ -36,7 +36,7 @@ func (p *Paths) UnmarshalJSON(data []byte) error {
 	return nil
 }
 
-func (p *Paths) UnmarshalYAML(unmarshal func(interface{}) error) error {
+func (p *Paths) UnmarshalYAML(unmarshal func(any) error) error {
 	out := []string{}
 	if sliceErr := unmarshal(&out); sliceErr != nil {
 		var ele string
@@ -61,7 +61,7 @@ type Config struct {
 	Cloud     Cloud                `json:"cloud" yaml:"cloud"`
 	Servers   []Server             `json:"servers" yaml:"servers"`
 	SQL       []SQL                `json:"sql" yaml:"sql"`
-	Overrides Overrides            `json:"overrides,omitempty" yaml:"overrides"`
+	Overrides Overrides            `json:"overrides" yaml:"overrides"`
 	Plugins   []Plugin             `json:"plugins" yaml:"plugins"`
 	Rules     []Rule               `json:"rules" yaml:"rules"`
 	Options   map[string]yaml.Node `json:"options" yaml:"options"`
@@ -125,8 +125,8 @@ type SQL struct {
 // AnalyzerDatabase represents the database analyzer setting.
 // It can be a boolean (true/false) or the string "only" for database-only mode.
 type AnalyzerDatabase struct {
-	value   *bool  // nil means not set, true/false for boolean values
-	isOnly  bool   // true when set to "only"
+	value  *bool // nil means not set, true/false for boolean values
+	isOnly bool  // true when set to "only"
 }
 
 // IsEnabled returns true if the database analyzer should be used.
@@ -166,7 +166,7 @@ func (a *AnalyzerDatabase) UnmarshalJSON(data []byte) error {
 	return errors.New("analyzer.database must be true, false, or \"only\"")
 }
 
-func (a *AnalyzerDatabase) UnmarshalYAML(unmarshal func(interface{}) error) error {
+func (a *AnalyzerDatabase) UnmarshalYAML(unmarshal func(any) error) error {
 	// Try to unmarshal as boolean first
 	var b bool
 	if err := unmarshal(&b); err == nil {

internal/config/convert/convert.go

@@ -8,11 +8,11 @@ import (
 	"gopkg.in/yaml.v3"
 )
 
-func gen(n *yaml.Node) (interface{}, error) {
+func gen(n *yaml.Node) (any, error) {
 	switch n.Kind {
 
 	case yaml.MappingNode:
-		nn := map[string]interface{}{}
+		nn := map[string]any{}
 		for i, _ := range n.Content {
 			if i%2 == 0 {
 				k := n.Content[i]
@@ -26,7 +26,7 @@ func gen(n *yaml.Node) (interface{}, error) {
 		return nn, nil
 
 	case yaml.SequenceNode:
-		nn := []interface{}{}
+		nn := []any{}
 		for i, _ := range n.Content {
 			v, err := gen(n.Content[i])
 			if err != nil {

internal/dbmanager/client.go

@@ -90,7 +90,7 @@ func (m *ManagedClient) CreateDatabase(ctx context.Context, req *CreateDatabaseR
 	uri.Path = "/" + name
 
 	key := uri.String()
-	_, err, _ = flight.Do(key, func() (interface{}, error) {
+	_, err, _ = flight.Do(key, func() (any, error) {
 		// TODO: Use a parameterized query
 		row := pool.QueryRow(ctx,
 			fmt.Sprintf(`SELECT datname FROM pg_database WHERE datname = '%s'`, name))

internal/debug/dump.go

@@ -20,7 +20,7 @@ func init() {
 	}
 }
 
-func Dump(n ...interface{}) {
+func Dump(n ...any) {
 	if Active {
 		spew.Dump(n)
 	}

internal/endtoend/ddl_test.go

@@ -12,7 +12,6 @@ import (
 
 func TestValidSchema(t *testing.T) {
 	for _, replay := range FindTests(t, "testdata", "base") {
-		replay := replay // https://golang.org/doc/faq#closures_and_goroutines
 
 		if replay.Exec != nil {
 			if replay.Exec.Meta.InvalidSchema {
@@ -32,7 +31,6 @@ func TestValidSchema(t *testing.T) {
 		}
 
 		for j, pkg := range conf.SQL {
-			j, pkg := j, pkg
 			switch pkg.Engine {
 			case config.EnginePostgreSQL:
 				// pass

internal/endtoend/endtoend_test.go

@@ -221,8 +221,6 @@ func TestReplay(t *testing.T) {
 	}
 
 	for name, testctx := range contexts {
-		name := name
-		testctx := testctx
 
 		if !testctx.Enabled() {
 			continue
@@ -354,7 +352,6 @@ func cmpDirectory(t *testing.T, dir string, actual map[string]string) {
 	if !cmp.Equal(expected, actual, opts...) {
 		t.Errorf("%s contents differ", dir)
 		for name, contents := range expected {
-			name := name
 			if actual[name] == "" {
 				t.Errorf("%s is empty", name)
 				return