Package 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
    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
    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 Details

    • 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 Details

    • 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