Uses of Class
org.apache.flink.table.api.ApiExpression

Packages that use ApiExpression

Package	Description
org.apache.flink.table.api

Uses of ApiExpression in org.apache.flink.table.api

Fields in org.apache.flink.table.api declared as ApiExpression

Modifier and Type	Field	Description
static final ApiExpression	Expressions.CURRENT_RANGE	Offset constant to be used in the following clause of Over windows.
static final ApiExpression	Expressions.CURRENT_ROW	Offset constant to be used in the following clause of Over windows.
static final ApiExpression	Expressions.UNBOUNDED_RANGE	Offset constant to be used in the preceding clause of unbounded Over windows.
static final ApiExpression	Expressions.UNBOUNDED_ROW	Offset constant to be used in the preceding clause of unbounded Over windows.

Methods in org.apache.flink.table.api that return ApiExpression

Modifier and Type	Method	Description
static ApiExpression	Expressions.$(String name)	Creates an unresolved reference to a table's column.
static ApiExpression	Expressions.and(Object predicate0, Object predicate1, Object... predicates)	Boolean AND in three-valued logic.
static ApiExpression	Expressions.array(Object head, Object... tail)	Creates an array of literals.
static ApiExpression	Expressions.atan2(Object y, Object x)	Calculates the arc tangent of a given coordinate.
static ApiExpression	Expressions.call(Class<? extends org.apache.flink.table.functions.UserDefinedFunction> function, Object... arguments)	A call to an unregistered, inline function.
static ApiExpression	Expressions.call(String path, Object... arguments)	A call to a function that will be looked up in a catalog.
static ApiExpression	Expressions.call(org.apache.flink.table.functions.UserDefinedFunction function, Object... arguments)	A call to an unregistered, inline function.
static ApiExpression	Expressions.callSql(String sqlExpression)	A call to a SQL expression.
static ApiExpression	Expressions.coalesce(Object... args)	Returns the first argument that is not NULL.
static ApiExpression	Expressions.col(String name)	Creates an unresolved reference to a table's column.
static ApiExpression	Expressions.concat(Object string, Object... strings)	Returns the string that results from concatenating the arguments.
static ApiExpression	Expressions.concatWs(Object separator, Object string, Object... strings)	Returns the string that results from concatenating the arguments and separator.
static ApiExpression	Expressions.convertTz(Object dateStr, Object tzFrom, Object tzTo)	Converts a datetime dateStr (with default ISO timestamp format 'yyyy-MM-dd HH:mm:ss') from time zone tzFrom to time zone tzTo.
static ApiExpression	Expressions.currentDatabase()	Return the current database, the return type of this expression is DataTypes.STRING().
static ApiExpression	Expressions.currentDate()	Returns the current SQL date in local time zone, the return type of this expression is DataTypes.DATE().
static ApiExpression	Expressions.currentTime()	Returns the current SQL time in local time zone, the return type of this expression is DataTypes.TIME().
static ApiExpression	Expressions.currentTimestamp()	Returns the current SQL timestamp in local time zone, the return type of this expression is DataTypes.TIMESTAMP_WITH_LOCAL_TIME_ZONE().
static ApiExpression	Expressions.currentWatermark(Object rowtimeAttribute)	Returns the current watermark for the given rowtime attribute, or NULL if no common watermark of all upstream operations is available at the current operation in the pipeline.
static ApiExpression	Expressions.dateFormat(Object timestamp, Object format)	Formats a timestamp as a string using a specified format.
static ApiExpression	Expressions.e()	Returns a value that is closer than any other value to e.
static ApiExpression	Expressions.fromUnixtime(Object unixtime)	Converts unix timestamp (seconds since '1970-01-01 00:00:00' UTC) to datetime string in the "yyyy-MM-dd HH:mm:ss" format.
static ApiExpression	Expressions.fromUnixtime(Object unixtime, Object format)	Converts unix timestamp (seconds since '1970-01-01 00:00:00' UTC) to datetime string in the given format.
static ApiExpression	Expressions.ifThenElse(Object condition, Object ifTrue, Object ifFalse)	Ternary conditional operator that decides which of two other expressions should be evaluated based on a evaluated boolean condition.
static ApiExpression	Expressions.jsonArray(org.apache.flink.table.api.JsonOnNull onNull, Object... values)	Builds a JSON array string from a list of values.
static ApiExpression	Expressions.jsonArrayAgg(org.apache.flink.table.api.JsonOnNull onNull, Object itemExpr)	Builds a JSON object string by aggregating items into an array.
static ApiExpression	Expressions.jsonObject(org.apache.flink.table.api.JsonOnNull onNull, Object... keyValues)	Builds a JSON object string from a list of key-value pairs.
static ApiExpression	Expressions.jsonObjectAgg(org.apache.flink.table.api.JsonOnNull onNull, Object keyExpr, Object valueExpr)	Builds a JSON object string by aggregating key-value expressions into a single JSON object.
static ApiExpression	Expressions.jsonString(Object value)	Serializes a value into JSON.
static ApiExpression	Expressions.lag(Object value)	A window function that provides access to a row that comes directly before the current row.
static ApiExpression	Expressions.lag(Object value, Object offset)	A window function that provides access to a row at a specified physical offset which comes before the current row.
static ApiExpression	Expressions.lag(Object value, Object offset, Object defaultValue)	A window function that provides access to a row at a specified physical offset which comes before the current row.
static ApiExpression	Expressions.lead(Object value)	A window function that provides access to a row that comes directly after the current row.
static ApiExpression	Expressions.lead(Object value, Object offset)	A window function that provides access to a row at a specified physical offset which comes after the current row.
static ApiExpression	Expressions.lead(Object value, Object offset, Object defaultValue)	A window function that provides access to a row at a specified physical offset which comes after the current row.
static ApiExpression	Expressions.lit(Object v)	Creates a SQL literal.
static ApiExpression	Expressions.lit(Object v, org.apache.flink.table.types.DataType dataType)	Creates a SQL literal of a given DataType.
static ApiExpression	Expressions.localTime()	Returns the current SQL time in local time zone, the return type of this expression is DataTypes.TIME(), this is a synonym for Expressions.currentTime().
static ApiExpression	Expressions.localTimestamp()	Returns the current SQL timestamp in local time zone, the return type of this expression is DataTypes.TIMESTAMP().
static ApiExpression	Expressions.log(Object value)	Calculates the logarithm of the given value.
static ApiExpression	Expressions.log(Object base, Object value)	Calculates the logarithm of the given value to the given base.
static ApiExpression	Expressions.map(Object key, Object value, Object... tail)	Creates a map of expressions.
static ApiExpression	Expressions.mapFromArrays(Object key, Object value)	Creates a map from an array of keys and an array of values.
static ApiExpression	Expressions.negative(Object v)	Returns negative numeric.
static ApiExpression	Expressions.not(Object expression)	Inverts a given boolean expression.
static ApiExpression	Expressions.nullOf(org.apache.flink.api.common.typeinfo.TypeInformation<?> typeInfo)	Deprecated. This method will be removed in future versions as it uses the old type system.
static ApiExpression	Expressions.nullOf(org.apache.flink.table.types.DataType dataType)	Returns a null literal value of a given data type.
static ApiExpression	Expressions.or(Object predicate0, Object predicate1, Object... predicates)	Boolean OR in three-valued logic.
static ApiExpression	Expressions.pi()	Returns a value that is closer than any other value to pi.
static ApiExpression	Expressions.rand()	Returns a pseudorandom double value between 0.0 (inclusive) and 1.0 (exclusive).
static ApiExpression	Expressions.rand(Object seed)	Returns a pseudorandom double value between 0.0 (inclusive) and 1.0 (exclusive) with a initial seed.
static ApiExpression	Expressions.randInteger(Object bound)	Returns a pseudorandom integer value between 0 (inclusive) and the specified value (exclusive).
static ApiExpression	Expressions.randInteger(Object seed, Object bound)	Returns a pseudorandom integer value between 0 (inclusive) and the specified value (exclusive) with a initial seed.
static ApiExpression	Expressions.range(int start, int end)	Indicates an index based range, which can be used in columns selection.
static ApiExpression	Expressions.range(String start, String end)	Indicates a range from 'start' to 'end', which can be used in columns selection.
static ApiExpression	Expressions.row(Object head, Object... tail)	Creates a row of expressions.
static ApiExpression	Expressions.rowInterval(Long rows)	Creates an interval of rows.
static ApiExpression	Expressions.sourceWatermark()	Source watermark declaration for Schema.
static ApiExpression	Expressions.temporalOverlaps(Object leftTimePoint, Object leftTemporal, Object rightTimePoint, Object rightTemporal)	Determines whether two anchored time intervals overlap.
static ApiExpression	Expressions.timestampDiff(org.apache.flink.table.expressions.TimePointUnit timePointUnit, Object timePoint1, Object timePoint2)	Returns the (signed) number of TimePointUnit between timePoint1 and timePoint2.
protected ApiExpression	ApiExpression.toApiSpecificExpression(org.apache.flink.table.expressions.Expression expression)
static ApiExpression	Expressions.toDate(Object dateStr)	Converts the given date string with format 'yyyy-MM-dd' to DataTypes.DATE().
static ApiExpression	Expressions.toDate(Object dateStr, Object format)	Converts the date string with the specified format to DataTypes.DATE().
static ApiExpression	Expressions.toTimestamp(Object timestampStr)	Converts the given date time string with format 'yyyy-MM-dd HH:mm:ss' under the 'UTC+0' time zone to DataTypes.TIMESTAMP().
static ApiExpression	Expressions.toTimestamp(Object timestampStr, Object format)	Converts the given time string with the specified format under the 'UTC+0' time zone to DataTypes.TIMESTAMP().
static ApiExpression	Expressions.toTimestampLtz(Object numericEpochTime)	Converts a numeric type epoch time to DataTypes.TIMESTAMP_LTZ(int).
static ApiExpression	Expressions.toTimestampLtz(Object numericEpochTime, Object precision)	Converts a numeric type epoch time to DataTypes.TIMESTAMP_LTZ(int).
static ApiExpression	Expressions.toTimestampLtz(Object timestampStr, Object format, Object timezone)	Converts a string timestamp with the custom format and timezone to DataTypes.TIMESTAMP_LTZ(int).
static ApiExpression	Expressions.toTimestampLtz(String timeStamp)	Converts a timestamp to DataTypes.TIMESTAMP_LTZ(int).
static ApiExpression	Expressions.toTimestampLtz(String timestampStr, String format)	Converts the given time string with the specified format to DataTypes.TIMESTAMP_LTZ(int).
static ApiExpression	Expressions.unixTimestamp()	Gets the current unix timestamp in seconds.
static ApiExpression	Expressions.unixTimestamp(Object timestampStr)	Converts the given date time string with format 'yyyy-MM-dd HH:mm:ss' to unix timestamp (in seconds), using the time zone specified in the table config.
static ApiExpression	Expressions.unixTimestamp(Object timestampStr, Object format)	Converts the given date time string with the specified format to unix timestamp (in seconds), using the specified timezone in table config.
static ApiExpression	Expressions.uuid()	Returns an UUID (Universally Unique Identifier) string (e.g., "3d3c68f7-f608-473f-b60c-b0c44ad4cc4e") according to RFC 4122 type 4 (pseudo randomly generated) UUID.
static ApiExpression	Expressions.withAllColumns()	Creates an expression that selects all columns.
static ApiExpression	Expressions.withColumns(Object head, Object... tail)	Creates an expression that selects a range of columns.
static ApiExpression	Expressions.withoutColumns(Object head, Object... tail)	Creates an expression that selects all columns except for the given range of columns.