Used to build outer join constructs. More...

#include <rw/db/expr.h>

Inheritance diagram for RWDBJoinExpr:

Public Member Functions
	RWDBJoinExpr ()

	RWDBJoinExpr (const RWDBJoinExpr &jexpr)

RWDBJoinExpr &	on (const RWDBCriterion &criterion)

RWDBJoinExpr &	on (const RWDBColumn &column)

RWDBJoinExpr &	operator= (const RWDBJoinExpr &jexpr)

Public Member Functions inherited from RWDBExpr
	RWDBExpr ()

	RWDBExpr (const RWDBExpr &expr)

	RWDBExpr (char value)

	RWDBExpr (unsigned char value)

	RWDBExpr (short value)

	RWDBExpr (unsigned short value)

	RWDBExpr (int value)

	RWDBExpr (unsigned int value)

	RWDBExpr (long int value)

	RWDBExpr (unsigned long int value)

	RWDBExpr (long long value)

	RWDBExpr (unsigned long long value)

	RWDBExpr (float value)

	RWDBExpr (double value)

	RWDBExpr (long double value)

	RWDBExpr (const char *value)

	RWDBExpr (const wchar_t *value)

	RWDBExpr (const RWCString &value)

	RWDBExpr (const RWDecimalPortable &value)

	RWDBExpr (const RWDateTime &value)

	RWDBExpr (const RWDBDateTime &value)

	RWDBExpr (const RWDBDuration &value)

	RWDBExpr (const RWDate &value)

	RWDBExpr (const RWTime &value)

	RWDBExpr (const RWDBBlob &value)

	RWDBExpr (const RWBasicUString &value)

	RWDBExpr (const RWDBMBString &value)

	RWDBExpr (const RWWString &value)

	RWDBExpr (const RWDBValue &value, bool usePhraseBook=true)

	RWDBExpr (const RWDBColumn &column)

	RWDBExpr (const RWDBSelectorBase &subSelect)

	RWDBExpr (RWDBValueManip manip)

	RWDBExpr (const RWCollection &collection)

	RWDBExpr (const RWDBTable &)

	RWDBExpr (const RWDBColumn &left, const RWDBExpr &right)

	RWDBExpr (const RWDBColumn &left, const RWDBValue &right)

RWCString	asString (const RWDBPhraseBook &phraseBook, AsStringControlFlag control=normal) const

RWDBCriterion	between (const RWDBExpr &expression1, const RWDBExpr &expression2) const

RWDBCriterion	in (const RWDBExpr &expression1) const

RWDBCriterion	isNull (void) const

bool	isValid (void) const

RWDBCriterion	leftOuterJoin (const RWDBExpr &expression) const

RWDBCriterion	like (const RWDBExpr &expression1) const

RWDBCriterion	matchUnique (const RWDBExpr &expression1) const

RWDBExpr &	operator= (const RWDBExpr &expr)

RWDBCriterion	rightOuterJoin (const RWDBExpr &expression) const

Related Functions
(Note that these are not member functions.)
RWDBJoinExpr	rwdbCross (const RWDBTable &, const RWDBTable &)

RWDBJoinExpr	rwdbInner (const RWDBTable &, const RWDBTable &)

RWDBJoinExpr	rwdbInner (const RWDBTable &table, const RWDBJoinExpr &jexpr)

RWDBJoinExpr	rwdbInner (const RWDBJoinExpr &jexpr, const RWDBTable &table)

RWDBJoinExpr	rwdbInner (const RWDBJoinExpr &, const RWDBJoinExpr &)

RWDBJoinExpr	rwdbLeftOuter (const RWDBTable &, const RWDBTable &)

RWDBJoinExpr	rwdbLeftOuter (const RWDBTable &table, const RWDBJoinExpr &jexpr)

RWDBJoinExpr	rwdbLeftOuter (const RWDBJoinExpr &, const RWDBTable &)

RWDBJoinExpr	rwdbLeftOuter (const RWDBJoinExpr &, const RWDBJoinExpr &)

RWDBJoinExpr	rwdbNaturalLeftOuter (const RWDBTable &, const RWDBTable &)

RWDBJoinExpr	rwdbNaturalLeftOuter (const RWDBTable &table, const RWDBJoinExpr &jexpr)

RWDBJoinExpr	rwdbNaturalLeftOuter (const RWDBJoinExpr &, const RWDBTable &)

RWDBJoinExpr	rwdbNaturalLeftOuter (const RWDBJoinExpr &, const RWDBJoinExpr &)

RWDBJoinExpr	rwdbNaturalOuter (const RWDBTable &, const RWDBTable &)

RWDBJoinExpr	rwdbNaturalOuter (const RWDBTable &table, const RWDBJoinExpr &jexpr)

RWDBJoinExpr	rwdbNaturalOuter (const RWDBJoinExpr &, const RWDBTable &)

RWDBJoinExpr	rwdbNaturalOuter (const RWDBJoinExpr &, const RWDBJoinExpr &)

RWDBJoinExpr	rwdbNaturalRightOuter (const RWDBTable &, const RWDBTable &)

RWDBJoinExpr	rwdbNaturalRightOuter (const RWDBTable &table, const RWDBJoinExpr &jexpr)

RWDBJoinExpr	rwdbNaturalRightOuter (const RWDBJoinExpr &, const RWDBTable &)

RWDBJoinExpr	rwdbNaturalRightOuter (const RWDBJoinExpr &, const RWDBJoinExpr &)

RWDBJoinExpr	rwdbOuter (const RWDBTable &, const RWDBTable &)

RWDBJoinExpr	rwdbOuter (const RWDBTable &table, const RWDBJoinExpr &jexpr)

RWDBJoinExpr	rwdbOuter (const RWDBJoinExpr &jexpr, const RWDBTable &table)

RWDBJoinExpr	rwdbOuter (const RWDBJoinExpr &, const RWDBJoinExpr &)

RWDBJoinExpr	rwdbRightOuter (const RWDBTable &, const RWDBTable &)

RWDBJoinExpr	rwdbRightOuter (const RWDBTable &table, const RWDBJoinExpr &jexpr)

RWDBJoinExpr	rwdbRightOuter (const RWDBJoinExpr &, const RWDBTable &)

RWDBJoinExpr	rwdbRightOuter (const RWDBJoinExpr &, const RWDBJoinExpr &)

Related Functions inherited from RWDBExpr
RWDBCriterion	operator! (const RWDBCriterion &)

RWDBCriterion	operator!= (const RWDBExpr &, const RWDBExpr &)

RWDBExpr	operator% (const RWDBExpr &, const RWDBExpr &)

RWDBCriterion	operator&& (const RWDBCriterion &, const RWDBCriterion &)

RWDBExpr	operator* (const RWDBExpr &, const RWDBExpr &)

RWDBExpr	operator+ (const RWDBExpr &, const RWDBExpr &)

RWDBExpr	operator+ (const RWDBExpr &)

RWDBExpr	operator- (const RWDBExpr &, const RWDBExpr &)

RWDBExpr	operator- (const RWDBExpr &)

RWDBExpr	operator/ (const RWDBExpr &, const RWDBExpr &)

RWDBCriterion	operator< (const RWDBExpr &, const RWDBExpr &)

RWDBCriterion	operator<= (const RWDBExpr &, const RWDBExpr &)

RWDBCriterion	operator== (const RWDBExpr &, const RWDBExpr &)

RWDBCriterion	operator> (const RWDBExpr &, const RWDBExpr &)

RWDBCriterion	operator>= (const RWDBExpr &, const RWDBExpr &)

RWDBCriterion	operator\|\| (const RWDBCriterion &, const RWDBCriterion &)

RWDBExpr	rwdbAvg (const RWDBExpr &expr)

RWDBExpr	rwdbCast (const RWDBExpr &expr, const RWDBValue &type)

RWDBExpr	rwdbCast (const RWDBExpr &expr, const RWDBValue &typeName, const RWDBExpr &formatString)

RWDBExpr	rwdbCast (const RWDBExpr &expr, const RWDBValue &typeName, const RWDBExpr &formatString, const RWDBExpr &secondaryFormat)

RWDBExpr	rwdbCharLength (const RWDBExpr &expr)

RWDBExpr	rwdbCount (const RWDBExpr &expr)

RWDBExpr	rwdbCount ()

RWDBExpr	rwdbCountDistinct (const RWDBExpr &expr)

RWDBExpr	rwdbCurrentUser ()

RWDBCriterion	rwdbExists (const RWDBSelectorBase &select)

RWDBExpr	rwdbLower (const RWDBExpr &expr)

RWDBExpr	rwdbMax (const RWDBExpr &expr)

RWDBExpr	rwdbMin (const RWDBExpr &expr)

RWDBExpr	rwdbName (const RWCString &name, const RWDBExpr &expr)

RWDBExpr	rwdbPosition (const RWDBExpr &expr1, const RWDBExpr &expr2)

RWDBExpr	rwdbSessionUser ()

RWDBExpr	rwdbSubString (const RWDBExpr &expr1, const RWDBExpr &expr2)

RWDBExpr	rwdbSubString (const RWDBExpr &expr1, const RWDBExpr &expr2, const RWDBExpr &expr3)

RWDBExpr	rwdbSum (const RWDBExpr &expr)

RWDBExpr	rwdbSystemDateTime ()

RWDBExpr	rwdbSystemUser ()

RWDBExpr	rwdbTrimBoth (const RWDBExpr &expr1, const RWDBExpr &expr2)

RWDBExpr	rwdbTrimLeading (const RWDBExpr &expr1, const RWDBExpr &expr2)

RWDBExpr	rwdbTrimTrailing (const RWDBExpr &expr1, const RWDBExpr &expr2)

RWDBExpr	rwdbUpper (const RWDBExpr &expr)

Additional Inherited Members
Public Types inherited from RWDBExpr
enum	AsStringControlFlag { normal, suppressTagsOnColumns, noPlaceHolder, placeHolderNotRecommended }

Detailed Description

RWDBJoinExpr is created by a set of global functions that generate ANSI SQL outer join syntax. It represents a specialized type of RWDBExpr that is used only for building outer join constructs.

Synopsis: #include <rw/db/expr.h>

See also: RWDBJoinExpr is a special case of RWDBExpr. See RWDBExpr for more details. Also see RWDBColumn.

Example: In this example, an RWDBJoinExpr is created anonymously by the related global function rwdbOuter(), and set as part of the FROM clause.

// Instantiate a table object to represent the first table.

RWDBTable t1 = aDatabase.table("table1");

// Instantiate a table object to represent the second table.

RWDBTable t2 = aDatabase.table("table2");

// Instantiate a selector to represent a join query.

RWDBSelector aSelector = aDB.selector();

// Construct an isolated full outer join expression

// using the global method rwdbOuter().

RWDBJoinExpr join = rwdbOuter(t1, t2);

// Specify the join criterion and attach it to the

// join expression using the on method.

join.on(t1["c1"] == t2["c2"]);

// Explicitly attach the join to the FROM clause

// of the selector.

aSelector.from( join );

Constructor & Destructor Documentation

RWDBJoinExpr::RWDBJoinExpr ( )

The default constructor is provided for convenience. Typically, RWDBJoinExpr instances are obtained through outer join global functions.

RWDBJoinExpr::RWDBJoinExpr ( const RWDBJoinExpr & jexpr )

Copy constructor. The created RWDBJoinExpr shares an implementation with jexpr.

Member Function Documentation

RWDBJoinExpr& RWDBJoinExpr::on ( const RWDBCriterion & criterion )

Specifies the join condition as self's SQL ON clause. If self already has an ON clause, this method replaces it. Returns a reference to self.

RWDBJoinExpr& RWDBJoinExpr::on ( const RWDBColumn & column )

Adds the column to self's SQL USING clause, which specifies the join columns for the join. Returns a reference to self.

RWDBJoinExpr& RWDBJoinExpr::operator= ( const RWDBJoinExpr & jexpr )

Assignment operator. Self shares an implementation with jexpr. Returns a reference to self.

Friends And Related Function Documentation

RWDBJoinExpr rwdbCross	(	const RWDBTable &	,
		const RWDBTable &
	)

RWDBJoinExpr rwdbInner	(	const RWDBTable &	,
		const RWDBTable &
	)

RWDBJoinExpr rwdbInner	(	const RWDBTable &	table,
		const RWDBJoinExpr &	jexpr
	)

Returns an RWDBJoinExpr that represents an encapsulation of the INNER JOIN SQL phrase between a table and an inner join expression. For databases that support precedence in inner joins, the generated SQL adds precedence to jexpr, such that jexpr is evaluated first before the table is joined.

RWDBJoinExpr rwdbInner	(	const RWDBJoinExpr &	jexpr,
		const RWDBTable &	table
	)

RWDBJoinExpr rwdbInner	(	const RWDBJoinExpr &	,
		const RWDBJoinExpr &
	)

RWDBJoinExpr rwdbLeftOuter	(	const RWDBTable &	,
		const RWDBTable &
	)

RWDBJoinExpr rwdbLeftOuter	(	const RWDBTable &	table,
		const RWDBJoinExpr &	jexpr
	)

Returns an RWDBJoinExpr that represents an encapsulation of the LEFT OUTER JOIN SQL phrase between a table and an outer join expression. For databases that support precedence in outer joins, the generated SQL adds precedence to jexpr such that jexpr is evaluated first before the table is joined.

RWDBJoinExpr rwdbLeftOuter	(	const RWDBJoinExpr &	,
		const RWDBTable &
	)

RWDBJoinExpr rwdbLeftOuter	(	const RWDBJoinExpr &	,
		const RWDBJoinExpr &
	)

RWDBJoinExpr rwdbNaturalLeftOuter	(	const RWDBTable &	,
		const RWDBTable &
	)

RWDBJoinExpr rwdbNaturalLeftOuter	(	const RWDBTable &	table,
		const RWDBJoinExpr &	jexpr
	)

Returns an RWDBJoinExpr that represents an encapsulation of the NATURAL LEFT OUTER JOIN SQL phrase between a table and an outer join expression. For databases that support precedence in outer joins, the generated SQL adds precedence to jexpr, such that jexpr is evaluated first before the table is joined.

RWDBJoinExpr rwdbNaturalLeftOuter	(	const RWDBJoinExpr &	,
		const RWDBTable &
	)

RWDBJoinExpr rwdbNaturalLeftOuter	(	const RWDBJoinExpr &	,
		const RWDBJoinExpr &
	)

RWDBJoinExpr rwdbNaturalOuter	(	const RWDBTable &	,
		const RWDBTable &
	)

RWDBJoinExpr rwdbNaturalOuter	(	const RWDBTable &	table,
		const RWDBJoinExpr &	jexpr
	)

Returns an RWDBJoinExpr that represents an encapsulation of the NATURAL FULL OUTER JOIN SQL phrase between a table and an outer join expression. For databases that support precedence in outer joins, the generated SQL adds precedence to jexpr, such that jexpr is evaluated first before the table is joined.

RWDBJoinExpr rwdbNaturalOuter	(	const RWDBJoinExpr &	,
		const RWDBTable &
	)

RWDBJoinExpr rwdbNaturalOuter	(	const RWDBJoinExpr &	,
		const RWDBJoinExpr &
	)

RWDBJoinExpr rwdbNaturalRightOuter	(	const RWDBTable &	,
		const RWDBTable &
	)

RWDBJoinExpr rwdbNaturalRightOuter	(	const RWDBTable &	table,
		const RWDBJoinExpr &	jexpr
	)

Returns an RWDBJoinExpr that represents an encapsulation of the NATURAL RIGHT OUTER JOIN SQL phrase between a table and an outer join expression. For databases that support precedence in outer joins, the generated SQL adds precedence to jexpr, such that jexpr is evaluated first before the table is joined.

RWDBJoinExpr rwdbNaturalRightOuter	(	const RWDBJoinExpr &	,
		const RWDBTable &
	)

RWDBJoinExpr rwdbNaturalRightOuter	(	const RWDBJoinExpr &	,
		const RWDBJoinExpr &
	)

RWDBJoinExpr rwdbOuter	(	const RWDBTable &	,
		const RWDBTable &
	)

RWDBJoinExpr rwdbOuter	(	const RWDBTable &	table,
		const RWDBJoinExpr &	jexpr
	)

Returns an RWDBJoinExpr that represents an encapsulation of the FULL OUTER JOIN SQL phrase between a table and an outer join expression. For databases that support precedence in outer joins, the generated SQL adds precedence to jexpr, such that jexpr is evaluated first before the table is joined.

RWDBJoinExpr rwdbOuter	(	const RWDBJoinExpr &	jexpr,
		const RWDBTable &	table
	)

RWDBJoinExpr rwdbOuter	(	const RWDBJoinExpr &	,
		const RWDBJoinExpr &
	)

RWDBJoinExpr rwdbRightOuter	(	const RWDBTable &	,
		const RWDBTable &
	)

RWDBJoinExpr rwdbRightOuter	(	const RWDBTable &	table,
		const RWDBJoinExpr &	jexpr
	)

Returns an RWDBJoinExpr that represents an encapsulation of the RIGHT OUTER JOIN SQL phrase between a table and an outer join expression. For databases that support precedence in outer joins, the generated SQL adds precedence to jexpr, such that jexpr is evaluated first before the table is joined.

RWDBJoinExpr rwdbRightOuter	(	const RWDBJoinExpr &	,
		const RWDBTable &
	)

RWDBJoinExpr rwdbRightOuter	(	const RWDBJoinExpr &	,
		const RWDBJoinExpr &
	)

SourcePro® API Reference Guide

Public Member Functions

Related Functions

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation

Friends And Related Function Documentation