fix: views generating broken Migrations (typeorm#4726)

MigrationGenerateCommand didn't apply parameters to query and information about ViewTables couldn't be inserted into typeorm_metadata table. Also added code that creates typeorm_metadata table if ViewTables exists

Fixed issue typeorm#4123

Author: evgeniytar

src/commands/MigrationGenerateCommand.ts

@@ -81,17 +81,17 @@ export class MigrationGenerateCommand implements yargs.CommandModule {
             // we are using simple quoted string instead of template string syntax
             if (connection.driver instanceof MysqlDriver) {
                 sqlInMemory.upQueries.forEach(upQuery => {
-                    upSqls.push("        await queryRunner.query(\"" + upQuery.query.replace(new RegExp(`"`, "g"), `\\"`) + "\");");
+                    upSqls.push("        await queryRunner.query(\"" + upQuery.query.replace(new RegExp(`"`, "g"), `\\"`) + "\", " + JSON.stringify(upQuery.parameters) + ");");
                 });
                 sqlInMemory.downQueries.forEach(downQuery => {
-                    downSqls.push("        await queryRunner.query(\"" + downQuery.query.replace(new RegExp(`"`, "g"), `\\"`) + "\");");
+                    downSqls.push("        await queryRunner.query(\"" + downQuery.query.replace(new RegExp(`"`, "g"), `\\"`) + "\", " + JSON.stringify(downQuery.parameters) + ");");
                 });
             } else {
                 sqlInMemory.upQueries.forEach(upQuery => {
-                    upSqls.push("        await queryRunner.query(`" + upQuery.query.replace(new RegExp("`", "g"), "\\`") + "`);");
+                    upSqls.push("        await queryRunner.query(`" + upQuery.query.replace(new RegExp("`", "g"), "\\`") + "`, " + JSON.stringify(upQuery.parameters) + ");");
                 });
                 sqlInMemory.downQueries.forEach(downQuery => {
-                    downSqls.push("        await queryRunner.query(`" + downQuery.query.replace(new RegExp("`", "g"), "\\`") + "`);");
+                    downSqls.push("        await queryRunner.query(`" + downQuery.query.replace(new RegExp("`", "g"), "\\`") + "`, " + JSON.stringify(downQuery.parameters) + ");");
                 });
             }
 

src/schema-builder/RdbmsSchemaBuilder.ts

@@ -104,6 +104,10 @@ export class RdbmsSchemaBuilder implements SchemaBuilder {
         this.queryRunner = this.connection.createQueryRunner("master");
         try {
             const tablePaths = this.entityToSyncMetadatas.map(metadata => metadata.tablePath);
+            // TODO: typeorm_metadata table needs only for Views for now.
+            //  Remove condition or add new conditions if necessary (for CHECK constraints for example).
+            if (this.viewEntityToSyncMetadatas.length > 0)
+                await this.createTypeormMetadataTable();
             await this.queryRunner.getTables(tablePaths);
             await this.queryRunner.getViews([]);
             this.queryRunner.enableSqlMemory();