org.apache.flink.sql.parser.ddl

Class SqlAlterTableDropColumn

java.lang.Object

org.apache.calcite.sql.SqlNode

org.apache.calcite.sql.SqlCall

org.apache.flink.sql.parser.ddl.SqlAlterTable

org.apache.flink.sql.parser.ddl.SqlAlterTableDropColumn

All Implemented Interfaces:

Cloneable

public class SqlAlterTableDropColumn
extends SqlAlterTable

SqlNode to describe ALTER TABLE [IF EXISTS] table_name DROP column clause.

Example: DDL like the below for drop column.

 -- drop single column
 ALTER TABLE prod.db.sample DROP col1;

 -- drop multiple columns
 ALTER TABLE prod.db.sample DROP (col1, col2, col3);
 

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.flink.sql.parser.ddl.SqlAlterTable

SqlAlterTable.AlterTableContext

Field Summary

Fields inherited from class org.apache.flink.sql.parser.ddl.SqlAlterTable

ifTableExists, OPERATOR, partitionSpec, tableIdentifier

Fields inherited from class org.apache.calcite.sql.SqlNode

EMPTY_ARRAY, pos

Constructor Summary

Constructors

Constructor and Description
SqlAlterTableDropColumn(org.apache.calcite.sql.parser.SqlParserPos pos, org.apache.calcite.sql.SqlIdentifier tableName, org.apache.calcite.sql.SqlNodeList columnList, boolean ifTableExists)

Method Summary

Modifier and Type	Method and Description
org.apache.calcite.sql.SqlNodeList	getColumnList()
List<org.apache.calcite.sql.SqlNode>	getOperandList()
void	unparse(org.apache.calcite.sql.SqlWriter writer, int leftPrec, int rightPrec)

Methods inherited from class org.apache.flink.sql.parser.ddl.SqlAlterTable

fullTableName, getOperator, getPartitionKVs, getPartitionSpec, getTableName, ifTableExists

Methods inherited from class org.apache.calcite.sql.SqlCall

accept, clone, equalsDeep, findValidOptions, getCallSignature, getFunctionQuantifier, getKind, getMonotonicity, isCountStar, isExpanded, operand, operandCount, setOperand, validate

Methods inherited from class org.apache.calcite.sql.SqlNode

clone, clone, cloneArray, equalDeep, equalDeep, equalsDeep, getParserPosition, isA, toList, toList, toSqlString, toSqlString, toSqlString, toString, unparseWithParentheses, validateExpr

Methods inherited from class java.lang.Object

equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

SqlAlterTableDropColumn

public SqlAlterTableDropColumn(org.apache.calcite.sql.parser.SqlParserPos pos,
                               org.apache.calcite.sql.SqlIdentifier tableName,
                               org.apache.calcite.sql.SqlNodeList columnList,
                               boolean ifTableExists)

Method Detail

getOperandList

public List<org.apache.calcite.sql.SqlNode> getOperandList()

Specified by:

getOperandList in class org.apache.calcite.sql.SqlCall

getColumnList

public org.apache.calcite.sql.SqlNodeList getColumnList()

unparse

public void unparse(org.apache.calcite.sql.SqlWriter writer,
                    int leftPrec,
                    int rightPrec)

Overrides:

unparse in class SqlAlterTable