org.apache.calcite.sql.fun

Class SqlTimestampAddFunction

java.lang.Object

org.apache.calcite.sql.SqlOperator

org.apache.calcite.sql.SqlFunction

org.apache.calcite.sql.fun.SqlTimestampAddFunction

public class SqlTimestampAddFunction
extends org.apache.calcite.sql.SqlFunction

The TIMESTAMPADD function, which adds an interval to a datetime (TIMESTAMP, TIME or DATE).

The SQL syntax is

TIMESTAMPADD(timestamp interval, quantity, datetime)

The interval time unit can one of the following literals:

• NANOSECOND (and synonym SQL_TSI_FRAC_SECOND)
• MICROSECOND (and synonyms SQL_TSI_MICROSECOND, FRAC_SECOND)
• SECOND (and synonym SQL_TSI_SECOND)
• MINUTE (and synonym SQL_TSI_MINUTE)
• HOUR (and synonym SQL_TSI_HOUR)
• DAY (and synonym SQL_TSI_DAY)
• WEEK (and synonym SQL_TSI_WEEK)
• MONTH (and synonym SQL_TSI_MONTH)
• QUARTER (and synonym SQL_TSI_QUARTER)
• YEAR (and synonym SQL_TSI_YEAR)

Returns modified datetime.

This class was copied over from Calcite to fix the return type deduction issue on timestamp with local time zone type (CALCITE-4698).

Field Summary

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

kind, MDX_PRECEDENCE, NL

Method Summary

Modifier and Type	Method and Description
static org.apache.calcite.rel.type.RelDataType	deduceType(org.apache.calcite.rel.type.RelDataTypeFactory typeFactory, org.apache.calcite.avatica.util.TimeUnit timeUnit, org.apache.calcite.rel.type.RelDataType intervalType, org.apache.calcite.rel.type.RelDataType datetimeType)

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

deriveType, getFunctionType, getNameAsId, getParamNames, getParamTypes, getSqlIdentifier, getSyntax, isQuantifierAllowed, unparse, validateCall, validateQuantifier

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

acceptCall, acceptCall, adjustType, allowsFraming, argumentMustBeScalar, checkOperandCount, checkOperandTypes, constructArgNameList, constructArgTypeList, constructOperandList, createCall, createCall, createCall, createCall, equals, getAllowedSignatures, getAllowedSignatures, getKind, getLeftPrec, getMonotonicity, getMonotonicity, getName, getOperandCountRange, getOperandTypeChecker, getOperandTypeInference, getReturnTypeInference, getRightPrec, getSignatureTemplate, getStrongPolicyInference, hashCode, inferReturnType, inferReturnType, isAggregator, isDeterministic, isDynamicFunction, isGroup, isGroupAuxiliary, isName, isSymmetrical, leftPrec, preValidateCall, requiresDecimalExpansion, requiresOrder, requiresOver, rewriteCall, rightPrec, toString, unparseListClause, unparseListClause, validateOperands, validRexOperands

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Method Detail

deduceType

public static org.apache.calcite.rel.type.RelDataType deduceType(org.apache.calcite.rel.type.RelDataTypeFactory typeFactory,
                                                                 org.apache.calcite.avatica.util.TimeUnit timeUnit,
                                                                 org.apache.calcite.rel.type.RelDataType intervalType,
                                                                 org.apache.calcite.rel.type.RelDataType datetimeType)