org.apache.flink.sql.parser.ddl

Class SqlAlterTableModify

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.SqlAlterTableSchema

org.apache.flink.sql.parser.ddl.SqlAlterTableModify

All Implemented Interfaces:

Cloneable, ExtendedSqlNode

public class SqlAlterTableModify
extends SqlAlterTableSchema

SqlNode to describe ALTER TABLE [IF EXISTS] table_name MODIFY column/constraint/watermark clause.

Example: DDL like the below for modify column/constraint/watermark.

 -- modify single column
 ALTER TABLE mytable MODIFY new_column STRING COMMENT 'new_column docs';

 -- modify multiple columns, constraint, and watermark
 ALTER TABLE mytable MODIFY (
     log_ts STRING COMMENT 'log timestamp string' FIRST,
     ts AS TO_TIMESTAMP(log_ts) AFTER log_ts,
     col_meta int metadata from 'mk1' virtual AFTER col_b,
     PRIMARY KEY (id) NOT ENFORCED,
     WATERMARK FOR ts AS ts - INTERVAL '3' SECOND
 );
 

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.SqlAlterTableSchema

columnList, constraints, watermark

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
SqlAlterTableModify(org.apache.calcite.sql.parser.SqlParserPos pos, org.apache.calcite.sql.SqlIdentifier tableName, org.apache.calcite.sql.SqlNodeList modifiedColumns, List<SqlTableConstraint> constraints, SqlWatermark watermark, boolean ifTableExists)

Method Summary

Modifier and Type	Method and Description
void	unparse(org.apache.calcite.sql.SqlWriter writer, int leftPrec, int rightPrec)

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

getColumnPositions, getConstraints, getFullConstraint, getOperandList, getWatermark, validate

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

SqlAlterTableModify

public SqlAlterTableModify(org.apache.calcite.sql.parser.SqlParserPos pos,
                           org.apache.calcite.sql.SqlIdentifier tableName,
                           org.apache.calcite.sql.SqlNodeList modifiedColumns,
                           List<SqlTableConstraint> constraints,
                           @Nullable
                           SqlWatermark watermark,
                           boolean ifTableExists)

Method Detail

unparse

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

Overrides:

unparse in class SqlAlterTable