public class SqlDelete extends SqlCall
SqlDelete
is a node of a parse tree which represents a DELETE
statement.Modifier and Type | Field and Description |
---|---|
(package private) SqlIdentifier |
alias |
(package private) SqlNode |
condition |
static SqlSpecialOperator |
OPERATOR |
(package private) SqlSelect |
sourceSelect |
(package private) SqlNode |
targetTable |
EMPTY_ARRAY, pos
Constructor and Description |
---|
SqlDelete(SqlParserPos pos,
SqlNode targetTable,
SqlNode condition,
SqlSelect sourceSelect,
SqlIdentifier alias) |
Modifier and Type | Method and Description |
---|---|
SqlIdentifier |
getAlias() |
SqlNode |
getCondition()
Gets the filter condition for rows to be deleted.
|
SqlKind |
getKind()
Returns the type of node this is, or
SqlKind.OTHER if it's nothing special. |
java.util.List<SqlNode> |
getOperandList() |
SqlOperator |
getOperator() |
SqlSelect |
getSourceSelect()
Gets the source SELECT expression for the data to be deleted.
|
SqlNode |
getTargetTable() |
void |
setOperand(int i,
SqlNode operand)
Changes the value of an operand.
|
void |
setSourceSelect(SqlSelect sourceSelect) |
void |
unparse(SqlWriter writer,
int leftPrec,
int rightPrec)
Writes a SQL representation of this node to a writer.
|
void |
validate(SqlValidator validator,
SqlValidatorScope scope)
Validates this call.
|
accept, clone, equalsDeep, findValidOptions, getCallSignature, getFunctionQuantifier, getMonotonicity, isCountStar, isExpanded, operand, operandCount
clone, clone, cloneArray, equalDeep, equalDeep, equalsDeep, getParserPosition, isA, toSqlString, toSqlString, toString, validateExpr
public static final SqlSpecialOperator OPERATOR
SqlNode targetTable
SqlNode condition
SqlSelect sourceSelect
SqlIdentifier alias
public SqlDelete(SqlParserPos pos, SqlNode targetTable, SqlNode condition, SqlSelect sourceSelect, SqlIdentifier alias)
public SqlKind getKind()
SqlNode
SqlKind.OTHER
if it's nothing special.getKind
in class SqlCall
SqlKind
value, never nullSqlNode.isA(java.util.Set<org.apache.calcite.sql.SqlKind>)
public SqlOperator getOperator()
getOperator
in class SqlCall
public java.util.List<SqlNode> getOperandList()
getOperandList
in class SqlCall
public void setOperand(int i, SqlNode operand)
SqlCall
SqlValidator
; use sparingly.setOperand
in class SqlCall
i
- Operand indexoperand
- Operand valuepublic SqlNode getTargetTable()
public SqlIdentifier getAlias()
public SqlNode getCondition()
public SqlSelect getSourceSelect()
SqlValidatorImpl.performUnconditionalRewrites(SqlNode, boolean)
.public void unparse(SqlWriter writer, int leftPrec, int rightPrec)
SqlNode
The leftPrec
and rightPrec
parameters give
us enough context to decide whether we need to enclose the expression in
parentheses. For example, we need parentheses around "2 + 3" if preceded
by "5 *". This is because the precedence of the "*" operator is greater
than the precedence of the "+" operator.
The algorithm handles left- and right-associative operators by giving them slightly different left- and right-precedence.
If SqlWriter.isAlwaysUseParentheses()
is true, we use
parentheses even when they are not required by the precedence rules.
For the details of this algorithm, see SqlCall.unparse(org.apache.calcite.sql.SqlWriter, int, int)
.
public void validate(SqlValidator validator, SqlValidatorScope scope)
SqlCall
The default implementation delegates the validation to the operator's
SqlOperator.validateCall(org.apache.calcite.sql.SqlCall, org.apache.calcite.sql.validate.SqlValidator, org.apache.calcite.sql.validate.SqlValidatorScope, org.apache.calcite.sql.validate.SqlValidatorScope)
. Derived classes may override (as do,
for example SqlSelect
and SqlUpdate
).
public void setSourceSelect(SqlSelect sourceSelect)
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