Package org.apache.flink.sql.parser.ddl.table

Class SqlAlterTableDrop

java.lang.Object

org.apache.calcite.sql.SqlNode

org.apache.calcite.sql.SqlCall

org.apache.calcite.sql.SqlAlter

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

org.apache.flink.sql.parser.ddl.table.SqlAlterTableSchema

org.apache.flink.sql.parser.ddl.table.SqlAlterTableDrop

All Implemented Interfaces:

Cloneable, ExtendedSqlNode

Direct Known Subclasses:

SqlAlterTableDrop.SqlAlterTableDropColumn, SqlAlterTableDrop.SqlAlterTableDropConstraint, SqlAlterTableDrop.SqlAlterTableDropPrimaryKey, SqlAlterTableDrop.SqlAlterTableDropWatermark

public abstract class SqlAlterTableDrop
extends SqlAlterTableSchema

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

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

 -- drop a column (only drop of non persisted is allowed)
 ALTER MATERIALIZED TABLE materializedTable DROP col1;

 -- drop several columns
 ALTER MATERIALIZED TABLE materializedTable DROP (col1, col2, col3);

 -- drop a primary key
 ALTER MATERIALIZED TABLE materializedTable DROP PRIMARY KEY;

 -- drop a constraint by name
 ALTER MATERIALIZED TABLE materializedTable DROP CONSTRAINT constraint_name;

 -- drop a watermark
 ALTER MATERIALIZED TABLE materializedTable DROP WATERMARK;
 

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	SqlAlterTableDrop.SqlAlterTableDropColumn	SqlNode to describe ALTER TABLE [IF EXISTS ]table_name DROP column clause.
static class	SqlAlterTableDrop.SqlAlterTableDropConstraint	ALTER TABLE [IF EXISTS ][catalog_name.]
static class	SqlAlterTableDrop.SqlAlterTableDropPrimaryKey	ALTER TABLE [IF EXISTS ][catalog_name.]
static class	SqlAlterTableDrop.SqlAlterTableDropWatermark	ALTER TABLE [IF EXISTS ][catalog_name.]

Field Summary

Fields inherited from class org.apache.flink.sql.parser.ddl.table.SqlAlterTableSchema

columnList, constraints, watermark

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

ifTableExists, OPERATOR, partitionSpec, tableIdentifier

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

EMPTY_ARRAY, pos

Constructor Summary

Constructors

Constructor	Description
SqlAlterTableDrop(org.apache.calcite.sql.parser.SqlParserPos pos, org.apache.calcite.sql.SqlIdentifier tableName, boolean ifTableExists)
SqlAlterTableDrop(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	Description
protected String	getAlterOperation()
List<org.apache.calcite.sql.SqlNode>	getOperandList()
void	unparseAlterOperation(org.apache.calcite.sql.SqlWriter writer, int leftPrec, int rightPrec)
protected abstract void	unparseDropOperation(org.apache.calcite.sql.SqlWriter writer, int leftPrec, int rightPrec)

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

getColumnPositions, getConstraints, getFullConstraint, getWatermark, validate

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

fullTableName, getOperator, getPartitionKVs, getPartitionSpec, getTableName, ifTableExists

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

getScope, setScope, unparse

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

SqlAlterTableDrop

public SqlAlterTableDrop(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)

SqlAlterTableDrop

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

Method Detail

unparseDropOperation

protected abstract void unparseDropOperation(org.apache.calcite.sql.SqlWriter writer,
                                             int leftPrec,
                                             int rightPrec)

getOperandList

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

Overrides:

getOperandList in class SqlAlterTableSchema

getAlterOperation

protected String getAlterOperation()

Specified by:

getAlterOperation in class SqlAlterTableSchema

unparseAlterOperation

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

Overrides:

unparseAlterOperation in class SqlAlterTableSchema