Github user nareshpr commented on a diff in the pull request: https://github.com/apache/incubator-carbondata/pull/641#discussion_r106131227 --- Diff: integration/spark2/src/main/scala/org/apache/spark/sql/parser/CarbonSpark2SqlParser.scala --- @@ -129,4 +134,80 @@ class CarbonSpark2SqlParser extends CarbonDDLSqlParser { case databaseName ~ tableName ~ limit => ShowLoadsCommand(convertDbNameToLowerCase(databaseName), tableName.toLowerCase(), limit) } + + protected lazy val alterTableModifyDataType: Parser[LogicalPlan] = + ALTER ~> TABLE ~> (ident <~ ".").? ~ ident ~ CHANGE ~ ident ~ ident ~ + ident ~ opt("(" ~> rep1sep(valueOptions, ",") <~ ")") <~ opt(";") ^^ { + case dbName ~ table ~ change ~ columnName ~ columnNameCopy ~ dataType ~ values => + // both the column names should be same + CommonUtil.validateColumnNames(columnName, columnNameCopy) + val alterTableChangeDataTypeModel = + AlterTableDataTypeChangeModel(parseDataType(dataType.toLowerCase, values), + convertDbNameToLowerCase(dbName), + table.toLowerCase, + columnName.toLowerCase, + columnNameCopy.toLowerCase) + AlterTableDataTypeChange(alterTableChangeDataTypeModel) + } + + protected lazy val alterTableAddColumns: Parser[LogicalPlan] = + ALTER ~> TABLE ~> (ident <~ ".").? ~ ident ~ + (ADD ~> COLUMNS ~> "(" ~> repsep(anyFieldDef, ",") <~ ")") ~ + (TBLPROPERTIES ~> "(" ~> repsep(loadOptions, ",") <~ ")").? <~ opt(";") ^^ { + case dbName ~ table ~ fields ~ tblProp => + fields.foreach{ f => + if (isComplexDimDictionaryExclude(f.dataType.get)) { + throw new MalformedCarbonCommandException( + s"Add column is unsupported for complex datatype column: ${f.column}") + } + } + val tableProps = if (tblProp.isDefined) { + // default value should not be converted to lower case + val tblProps = tblProp.get.map(f => if (f._1.toLowerCase.startsWith("default.value.")) { + f._1 -> f._2 + } else { + f._1 -> f._2.toLowerCase + }) + scala.collection.mutable.Map(tblProps: _*) + } else { + scala.collection.mutable.Map.empty[String, String] + } + + val tableModel = prepareTableModel (false, + convertDbNameToLowerCase(dbName), + table.toLowerCase, + fields.map(convertFieldNamesToLowercase), + Seq.empty, + tableProps, + None, + true) + + val alterTableAddColumnsModel = AlterTableAddColumnsModel(convertDbNameToLowerCase(dbName), + table, + tableProps, + tableModel.dimCols, + tableModel.msrCols, + tableModel.highcardinalitydims.getOrElse(Seq.empty)) + AlterTableAddColumns(alterTableAddColumnsModel) + } + + private def convertFieldNamesToLowercase(field: Field): Field = { + val name = field.column.toLowerCase + field.copy(column = name, name = Some(name)) + } + protected lazy val alterTableDropColumn: Parser[LogicalPlan] = --- End diff -- Ok
--- If your project is set up for it, you can reply to this email and have your reply appear on GitHub as well. If your project does not have this feature enabled and wishes so, or if the feature is enabled but not working, please contact infrastructure at infrastruct...@apache.org or file a JIRA ticket with INFRA. ---