Fix for createViewOrReplace and its support for sqlite3

.gitignore

@@ -28,3 +28,5 @@ test/coverage/*
 #VsCode workspace
 .vscode
 /coverage/
+
+test/integration/migrate/migration/

lib/dialects/sqlite3/schema/sqlite-viewcompiler.js

@@ -1,11 +1,40 @@
 /* eslint max-len: 0 */
 
 const ViewCompiler = require('../../../schema/viewcompiler.js');
+const {
+  columnize: columnize_,
+} = require('../../../formatter/wrappingFormatter');
 
-class ViewCompiler_PG extends ViewCompiler {
+class ViewCompiler_SQLite3 extends ViewCompiler {
   constructor(client, viewCompiler) {
     super(client, viewCompiler);
   }
+  createOrReplace() {
+    const columns = this.columns;
+    const selectQuery = this.selectQuery.toString();
+    const viewName = this.viewName();
+
+    const columnList = columns
+      ? ' (' +
+        columnize_(
+          columns,
+          this.viewBuilder,
+          this.client,
+          this.bindingsHolder
+        ) +
+        ')'
+      : '';
+
+    const dropSql = `drop view if exists ${viewName}`;
+    const createSql = `create view ${viewName}${columnList} as ${selectQuery}`;
+
+    this.pushQuery({
+      sql: dropSql,
+    });
+    this.pushQuery({
+      sql: createSql,
+    });
+  }
 }
 
-module.exports = ViewCompiler_PG;
+module.exports = ViewCompiler_SQLite3;

lib/schema/viewcompiler.js

@@ -52,8 +52,8 @@ class ViewCompiler {
     const createStatement =
       'create ' +
       (materialized ? 'materialized ' : '') +
-      'view ' +
-      (replace ? 'or replace ' : '');
+      (replace ? 'or replace ' : '') +
+      'view ';
     const columnList = columns
       ? ' (' +
         columnize_(

test/integration2/schema/views.spec.js

@@ -122,6 +122,95 @@ describe('Views', () => {
             });
         });
 
+        it('create or replace view', async () => {
+          await knex.schema
+            .createViewOrReplace('view_test', function (view) {
+              view.columns(['a', 'b']);
+              view.as(
+                knex('table_view').select('a', 'b').where('b', '>', '10')
+              );
+            })
+            .testSql((tester) => {
+              tester(
+                ['pg', 'pg-redshift', 'cockroachdb', 'oracledb'],
+                [
+                  'create or replace view "view_test" ("a", "b") as select "a", "b" from "table_view" where "b" > \'10\'',
+                ]
+              );
+              tester(
+                ['mysql'],
+                [
+                  "create or replace view `view_test` (`a`, `b`) as select `a`, `b` from `table_view` where `b` > '10'",
+                ]
+              );
+              tester(
+                ['sqlite3'],
+                [
+                  'drop view if exists `view_test`',
+                  "create view `view_test` (`a`, `b`) as select `a`, `b` from `table_view` where `b` > '10'",
+                ]
+              );
+              tester('mssql', [
+                "CREATE OR ALTER VIEW [view_test] ([a], [b]) AS select [a], [b] from [table_view] where [b] > '10'",
+              ]);
+            });
+
+          // We test if the select on the view works and if results are good
+          await knex
+            .select(['a', 'b'])
+            .from('view_test')
+            .then(function (results) {
+              assertNumber(knex, results[0].b, 12);
+              assertNumber(knex, results[1].b, 45);
+              expect(results[0].a).to.be.equal('test2');
+              expect(results[1].a).to.be.equal('test3');
+            });
+        });
+
+        it('create or replace view without columns', async () => {
+          await knex.schema
+            .createViewOrReplace('view_test', function (view) {
+              view.as(
+                knex('table_view').select('a', 'b').where('b', '>', '10')
+              );
+            })
+            .testSql((tester) => {
+              tester(
+                ['pg', 'pg-redshift', 'cockroachdb', 'oracledb'],
+                [
+                  'create or replace view "view_test" as select "a", "b" from "table_view" where "b" > \'10\'',
+                ]
+              );
+              tester(
+                ['mysql'],
+                [
+                  "create or replace view `view_test` as select `a`, `b` from `table_view` where `b` > '10'",
+                ]
+              );
+              tester(
+                ['sqlite3'],
+                [
+                  'drop view if exists `view_test`',
+                  "create view `view_test` as select `a`, `b` from `table_view` where `b` > '10'",
+                ]
+              );
+              tester('mssql', [
+                "CREATE OR ALTER VIEW [view_test] AS select [a], [b] from [table_view] where [b] > '10'",
+              ]);
+            });
+
+          // We test if the select on the view works and if results are good
+          await knex
+            .select(['a', 'b'])
+            .from('view_test')
+            .then(function (results) {
+              assertNumber(knex, results[0].b, 12);
+              assertNumber(knex, results[1].b, 45);
+              expect(results[0].a).to.be.equal('test2');
+              expect(results[1].a).to.be.equal('test3');
+            });
+        });
+
         it('create materialized view', async function () {
           if (isMssql(knex) || isSQLite(knex) || isMysql(knex)) {
             return this.skip();

test/unit/schema-builder/mssql.js

@@ -118,6 +118,19 @@ describe('MSSQL SchemaBuilder', function () {
       );
     });
 
+    it('create view or replace without columns', async function () {
+      const viewSql = client
+        .schemaBuilder()
+        .createViewOrReplace('adults', function (view) {
+          view.as(knexMssql('users').select('name').where('age', '>', '18'));
+        })
+        .toSQL();
+      equal(1, viewSql.length);
+      expect(viewSql[0].sql).to.equal(
+        "CREATE OR ALTER VIEW [adults] AS select [name] from [users] where [age] > '18'"
+      );
+    });
+
     it('create view with check options', async function () {
       expect(() => {
         client

test/unit/schema-builder/mysql.js

@@ -157,7 +157,20 @@ module.exports = function (dialect) {
           .toSQL();
         equal(1, viewSql.length);
         expect(viewSql[0].sql).to.equal(
-          "create view or replace `adults` (`name`) as select `name` from `users` where `age` > '18'"
+          "create or replace view `adults` (`name`) as select `name` from `users` where `age` > '18'"
+        );
+      });
+
+      it('create view or replace without columns', async function () {
+        const viewSql = client
+          .schemaBuilder()
+          .createViewOrReplace('adults', function (view) {
+            view.as(knexMysql('users').select('name').where('age', '>', '18'));
+          })
+          .toSQL();
+        equal(1, viewSql.length);
+        expect(viewSql[0].sql).to.equal(
+          "create or replace view `adults` as select `name` from `users` where `age` > '18'"
         );
       });
 

test/unit/schema-builder/oracledb.js

@@ -99,7 +99,20 @@ describe('OracleDb SchemaBuilder', function () {
         .toSQL();
       equal(1, viewSql.length);
       expect(viewSql[0].sql).to.equal(
-        'create view or replace "adults" ("name") as select "name" from "users" where "age" > \'18\''
+        'create or replace view "adults" ("name") as select "name" from "users" where "age" > \'18\''
+      );
+    });
+
+    it('create view or replace without columns', async function () {
+      const viewSql = client
+        .schemaBuilder()
+        .createViewOrReplace('adults', function (view) {
+          view.as(knexOracleDb('users').select('name').where('age', '>', '18'));
+        })
+        .toSQL();
+      equal(1, viewSql.length);
+      expect(viewSql[0].sql).to.equal(
+        'create or replace view "adults" as select "name" from "users" where "age" > \'18\''
       );
     });
 

test/unit/schema-builder/postgres.js

@@ -257,7 +257,20 @@ describe('PostgreSQL SchemaBuilder', function () {
         .toSQL();
       equal(1, viewSql.length);
       expect(viewSql[0].sql).to.equal(
-        'create view or replace "adults" ("name") as select "name" from "users" where "age" > \'18\''
+        'create or replace view "adults" ("name") as select "name" from "users" where "age" > \'18\''
+      );
+    });
+
+    it('create view or replace without columns', async function () {
+      const viewSql = client
+        .schemaBuilder()
+        .createViewOrReplace('adults', function (view) {
+          view.as(knexPg('users').select('name').where('age', '>', '18'));
+        })
+        .toSQL();
+      equal(1, viewSql.length);
+      expect(viewSql[0].sql).to.equal(
+        'create or replace view "adults" as select "name" from "users" where "age" > \'18\''
       );
     });
 

test/unit/schema-builder/redshift.js

@@ -122,7 +122,20 @@ describe('Redshift SchemaBuilder', function () {
         .toSQL();
       equal(1, viewSql.length);
       expect(viewSql[0].sql).to.equal(
-        'create view or replace "adults" ("name") as select "name" from "users" where "age" > \'18\''
+        'create or replace view "adults" ("name") as select "name" from "users" where "age" > \'18\''
+      );
+    });
+
+    it('create view or replace without columns', async function () {
+      const viewSql = client
+        .schemaBuilder()
+        .createViewOrReplace('adults', function (view) {
+          view.as(knexRedShift('users').select('name').where('age', '>', '18'));
+        })
+        .toSQL();
+      equal(1, viewSql.length);
+      expect(viewSql[0].sql).to.equal(
+        'create or replace view "adults" as select "name" from "users" where "age" > \'18\''
       );
     });
 

test/unit/schema-builder/sqlite3.js

@@ -110,14 +110,30 @@ describe('SQLite SchemaBuilder', function () {
     });
 
     it('create view or replace', async function () {
-      expect(() => {
-        tableSql = client
-          .schemaBuilder()
-          .view('users', function (view) {
-            view.column('oldName').rename('newName').defaultTo('10');
-          })
-          .toSQL();
-      }).to.throw('rename column of views is not supported by this dialect.');
+      const viewSql = client
+        .schemaBuilder()
+        .createViewOrReplace('adults', function (view) {
+          view.columns(['name']);
+          view.as(knexSqlite3('users').select('name').where('age', '>', '18'));
+        })
+        .toSQL();
+      equal(1, viewSql.length);
+      expect(viewSql[0].sql).to.equal(
+        "DROP VIEW IF EXISTS `adults`; CREATE VIEW `adults` (`name`) AS select `name` from `users` where `age` > '18'"
+      );
+    });
+
+    it('create view or replace without columns', async function () {
+      const viewSql = client
+        .schemaBuilder()
+        .createViewOrReplace('adults', function (view) {
+          view.as(knexSqlite3('users').select('name').where('age', '>', '18'));
+        })
+        .toSQL();
+      equal(1, viewSql.length);
+      expect(viewSql[0].sql).to.equal(
+        "DROP VIEW IF EXISTS `adults`; CREATE VIEW `adults` AS select `name` from `users` where `age` > '18'"
+      );
     });
 
     it('create view with check options', async function () {