mirror of
https://git.postgresql.org/git/postgresql.git
synced 2024-09-08 19:59:24 +02:00
the parsetree representation. As yet we don't *do* anything with schema names, just drop 'em on the floor; but you can enter schema-compatible command syntax, and there's even a primitive CREATE SCHEMA command. No doc updates yet, except to note that you can now extract a field from a function-returning-row's result with (foo(...)).fieldname.
1483 lines
42 KiB
C
1483 lines
42 KiB
C
/*-------------------------------------------------------------------------
|
|
*
|
|
* parsenodes.h
|
|
* definitions for parse tree nodes
|
|
*
|
|
*
|
|
* Portions Copyright (c) 1996-2001, PostgreSQL Global Development Group
|
|
* Portions Copyright (c) 1994, Regents of the University of California
|
|
*
|
|
* $Id: parsenodes.h,v 1.163 2002/03/21 16:01:46 tgl Exp $
|
|
*
|
|
*-------------------------------------------------------------------------
|
|
*/
|
|
#ifndef PARSENODES_H
|
|
#define PARSENODES_H
|
|
|
|
#include "nodes/primnodes.h"
|
|
|
|
|
|
typedef enum InhOption
|
|
{
|
|
INH_NO, /* Do NOT scan child tables */
|
|
INH_YES, /* DO scan child tables */
|
|
INH_DEFAULT /* Use current SQL_inheritance option */
|
|
} InhOption;
|
|
|
|
|
|
/*****************************************************************************
|
|
* Query Tree
|
|
*****************************************************************************/
|
|
|
|
/*
|
|
* Query -
|
|
* all statments are turned into a Query tree (via transformStmt)
|
|
* for further processing by the optimizer
|
|
* utility statements (i.e. non-optimizable statements)
|
|
* have the *utilityStmt field set.
|
|
*
|
|
* we need the isPortal flag because portal names can be null too; can
|
|
* get rid of it if we support CURSOR as a commandType.
|
|
*/
|
|
typedef struct Query
|
|
{
|
|
NodeTag type;
|
|
|
|
CmdType commandType; /* select|insert|update|delete|utility */
|
|
|
|
Node *utilityStmt; /* non-null if this is a non-optimizable
|
|
* statement */
|
|
|
|
int resultRelation; /* target relation (index into rtable) */
|
|
struct RangeVar *into; /* target relation or portal (cursor)
|
|
* for portal just name is meaningful */
|
|
bool isPortal; /* is this a retrieve into portal? */
|
|
bool isBinary; /* binary portal? */
|
|
|
|
bool hasAggs; /* has aggregates in tlist or havingQual */
|
|
bool hasSubLinks; /* has subquery SubLink */
|
|
|
|
bool originalQuery; /* marks original query through rewriting */
|
|
|
|
List *rtable; /* list of range table entries */
|
|
FromExpr *jointree; /* table join tree (FROM and WHERE
|
|
* clauses) */
|
|
|
|
List *rowMarks; /* integer list of RT indexes of relations
|
|
* that are selected FOR UPDATE */
|
|
|
|
List *targetList; /* target list (of TargetEntry) */
|
|
|
|
List *groupClause; /* a list of GroupClause's */
|
|
|
|
Node *havingQual; /* qualifications applied to groups */
|
|
|
|
List *distinctClause; /* a list of SortClause's */
|
|
|
|
List *sortClause; /* a list of SortClause's */
|
|
|
|
Node *limitOffset; /* # of result tuples to skip */
|
|
Node *limitCount; /* # of result tuples to return */
|
|
|
|
Node *setOperations; /* set-operation tree if this is top level
|
|
* of a UNION/INTERSECT/EXCEPT query */
|
|
|
|
/*
|
|
* If the resultRelation turns out to be the parent of an inheritance
|
|
* tree, the planner will add all the child tables to the rtable and
|
|
* store a list of the rtindexes of all the result relations here.
|
|
* This is done at plan time, not parse time, since we don't want to
|
|
* commit to the exact set of child tables at parse time. This field
|
|
* ought to go in some sort of TopPlan plan node, not in the Query.
|
|
*/
|
|
List *resultRelations; /* integer list of RT indexes, or NIL */
|
|
|
|
/* internal to planner */
|
|
List *base_rel_list; /* list of base-relation RelOptInfos */
|
|
List *other_rel_list; /* list of other 1-relation RelOptInfos */
|
|
List *join_rel_list; /* list of join-relation RelOptInfos */
|
|
List *equi_key_list; /* list of lists of equijoined
|
|
* PathKeyItems */
|
|
List *query_pathkeys; /* pathkeys for query_planner()'s result */
|
|
} Query;
|
|
|
|
|
|
/****************************************************************************
|
|
* Supporting data structures for Parse Trees
|
|
*
|
|
* Most of these node types appear in raw parsetrees output by the grammar,
|
|
* and get transformed to something else by the analyzer. A few of them
|
|
* are used as-is in transformed querytrees.
|
|
****************************************************************************/
|
|
|
|
/*
|
|
* TypeName - specifies a type in definitions
|
|
*/
|
|
typedef struct TypeName
|
|
{
|
|
NodeTag type;
|
|
char *name; /* name of the type */
|
|
bool timezone; /* timezone specified? */
|
|
bool setof; /* is a set? */
|
|
int32 typmod; /* type modifier */
|
|
List *arrayBounds; /* array bounds */
|
|
char *attrname; /* field name when using %TYPE */
|
|
} TypeName;
|
|
|
|
/*
|
|
* ColumnRef - specifies a reference to a column, or possibly a whole tuple
|
|
*
|
|
* The "fields" list must be nonempty; its last component may be "*"
|
|
* instead of a field name. Subscripts are optional.
|
|
*/
|
|
typedef struct ColumnRef
|
|
{
|
|
NodeTag type;
|
|
List *fields; /* field names (list of Value strings) */
|
|
List *indirection; /* subscripts (list of A_Indices) */
|
|
} ColumnRef;
|
|
|
|
/*
|
|
* ParamRef - specifies a parameter reference
|
|
*
|
|
* The parameter could be qualified with field names and/or subscripts
|
|
*/
|
|
typedef struct ParamRef
|
|
{
|
|
NodeTag type;
|
|
int number; /* the number of the parameter */
|
|
List *fields; /* field names (list of Value strings) */
|
|
List *indirection; /* subscripts (list of A_Indices) */
|
|
} ParamRef;
|
|
|
|
/*
|
|
* A_Expr - binary expressions
|
|
*/
|
|
typedef struct A_Expr
|
|
{
|
|
NodeTag type;
|
|
int oper; /* type of operation (OP,OR,AND,NOT) */
|
|
char *opname; /* name of operator */
|
|
Node *lexpr; /* left argument */
|
|
Node *rexpr; /* right argument */
|
|
} A_Expr;
|
|
|
|
/*
|
|
* A_Const - a constant expression
|
|
*/
|
|
typedef struct A_Const
|
|
{
|
|
NodeTag type;
|
|
Value val; /* the value (with the tag) */
|
|
TypeName *typename; /* typecast */
|
|
} A_Const;
|
|
|
|
/*
|
|
* TypeCast - a CAST expression
|
|
*
|
|
* NOTE: for mostly historical reasons, A_Const parsenodes contain
|
|
* room for a TypeName; we only generate a separate TypeCast node if the
|
|
* argument to be casted is not a constant. In theory either representation
|
|
* would work, but it is convenient to have the target type immediately
|
|
* available while resolving a constant's datatype.
|
|
*/
|
|
typedef struct TypeCast
|
|
{
|
|
NodeTag type;
|
|
Node *arg; /* the expression being casted */
|
|
TypeName *typename; /* the target type */
|
|
} TypeCast;
|
|
|
|
/*
|
|
* CaseExpr - a CASE expression
|
|
*/
|
|
typedef struct CaseExpr
|
|
{
|
|
NodeTag type;
|
|
Oid casetype;
|
|
Node *arg; /* implicit equality comparison argument */
|
|
List *args; /* the arguments (list of WHEN clauses) */
|
|
Node *defresult; /* the default result (ELSE clause) */
|
|
} CaseExpr;
|
|
|
|
/*
|
|
* CaseWhen - an argument to a CASE expression
|
|
*/
|
|
typedef struct CaseWhen
|
|
{
|
|
NodeTag type;
|
|
Node *expr; /* comparison expression */
|
|
Node *result; /* substitution result */
|
|
} CaseWhen;
|
|
|
|
/* ----------------
|
|
* NullTest
|
|
*
|
|
* NullTest represents the operation of testing a value for NULLness.
|
|
* Currently, we only support scalar input values, but eventually a
|
|
* row-constructor input should be supported.
|
|
* The appropriate test is performed and returned as a boolean Datum.
|
|
* ----------------
|
|
*/
|
|
|
|
typedef enum NullTestType
|
|
{
|
|
IS_NULL, IS_NOT_NULL
|
|
} NullTestType;
|
|
|
|
typedef struct NullTest
|
|
{
|
|
NodeTag type;
|
|
Node *arg; /* input expression */
|
|
NullTestType nulltesttype; /* IS NULL, IS NOT NULL */
|
|
} NullTest;
|
|
|
|
/* ----------------
|
|
* BooleanTest
|
|
*
|
|
* BooleanTest represents the operation of determining whether a boolean
|
|
* is TRUE, FALSE, or UNKNOWN (ie, NULL). All six meaningful combinations
|
|
* are supported. Note that a NULL input does *not* cause a NULL result.
|
|
* The appropriate test is performed and returned as a boolean Datum.
|
|
* ----------------
|
|
*/
|
|
|
|
typedef enum BoolTestType
|
|
{
|
|
IS_TRUE, IS_NOT_TRUE, IS_FALSE, IS_NOT_FALSE, IS_UNKNOWN, IS_NOT_UNKNOWN
|
|
} BoolTestType;
|
|
|
|
typedef struct BooleanTest
|
|
{
|
|
NodeTag type;
|
|
Node *arg; /* input expression */
|
|
BoolTestType booltesttype; /* test type */
|
|
} BooleanTest;
|
|
|
|
/*
|
|
* ColumnDef - column definition (used in various creates)
|
|
*
|
|
* If the column has a default value, we may have the value expression
|
|
* in either "raw" form (an untransformed parse tree) or "cooked" form
|
|
* (the nodeToString representation of an executable expression tree),
|
|
* depending on how this ColumnDef node was created (by parsing, or by
|
|
* inheritance from an existing relation). We should never have both
|
|
* in the same node!
|
|
*
|
|
* The constraints list may contain a CONSTR_DEFAULT item in a raw
|
|
* parsetree produced by gram.y, but transformCreateStmt will remove
|
|
* the item and set raw_default instead. CONSTR_DEFAULT items
|
|
* should not appear in any subsequent processing.
|
|
*/
|
|
typedef struct ColumnDef
|
|
{
|
|
NodeTag type;
|
|
char *colname; /* name of column */
|
|
TypeName *typename; /* type of column */
|
|
bool is_not_null; /* NOT NULL constraint specified? */
|
|
Node *raw_default; /* default value (untransformed parse
|
|
* tree) */
|
|
char *cooked_default; /* nodeToString representation */
|
|
List *constraints; /* other constraints on column */
|
|
} ColumnDef;
|
|
|
|
/*
|
|
* Ident -
|
|
* an unqualified identifier. This is currently used only in the context
|
|
* of column name lists.
|
|
*/
|
|
typedef struct Ident
|
|
{
|
|
NodeTag type;
|
|
char *name; /* its name */
|
|
} Ident;
|
|
|
|
/*
|
|
* FuncCall - a function or aggregate invocation
|
|
*
|
|
* agg_star indicates we saw a 'foo(*)' construct, while agg_distinct
|
|
* indicates we saw 'foo(DISTINCT ...)'. In either case, the construct
|
|
* *must* be an aggregate call. Otherwise, it might be either an
|
|
* aggregate or some other kind of function.
|
|
*/
|
|
typedef struct FuncCall
|
|
{
|
|
NodeTag type;
|
|
char *funcname; /* name of function */
|
|
List *args; /* the arguments (list of exprs) */
|
|
bool agg_star; /* argument was really '*' */
|
|
bool agg_distinct; /* arguments were labeled DISTINCT */
|
|
} FuncCall;
|
|
|
|
/*
|
|
* A_Indices - array reference or bounds ([lidx:uidx] or [uidx])
|
|
*/
|
|
typedef struct A_Indices
|
|
{
|
|
NodeTag type;
|
|
Node *lidx; /* could be NULL */
|
|
Node *uidx;
|
|
} A_Indices;
|
|
|
|
/*
|
|
* ExprFieldSelect - select a field and/or array element from an expression
|
|
*
|
|
* This is used in the raw parsetree to represent selection from an
|
|
* arbitrary expression (not a column or param reference). Either
|
|
* fields or indirection may be NIL if not used.
|
|
*/
|
|
typedef struct ExprFieldSelect
|
|
{
|
|
NodeTag type;
|
|
Node *arg; /* the thing being selected from */
|
|
List *fields; /* field names (list of Value strings) */
|
|
List *indirection; /* subscripts (list of A_Indices) */
|
|
} ExprFieldSelect;
|
|
|
|
/*
|
|
* ResTarget -
|
|
* result target (used in target list of pre-transformed Parse trees)
|
|
*
|
|
* In a SELECT or INSERT target list, 'name' is either NULL or
|
|
* the column name assigned to the value. (If there is an 'AS ColumnLabel'
|
|
* clause, the grammar sets 'name' from it; otherwise 'name' is initially NULL
|
|
* and is filled in during the parse analysis phase.)
|
|
* The 'indirection' field is not used at all.
|
|
*
|
|
* In an UPDATE target list, 'name' is the name of the destination column,
|
|
* and 'indirection' stores any subscripts attached to the destination.
|
|
* That is, our representation is UPDATE table SET name [indirection] = val.
|
|
*/
|
|
typedef struct ResTarget
|
|
{
|
|
NodeTag type;
|
|
char *name; /* column name or NULL */
|
|
List *indirection; /* subscripts for destination column, or
|
|
* NIL */
|
|
Node *val; /* the value expression to compute or
|
|
* assign */
|
|
} ResTarget;
|
|
|
|
/*
|
|
* SortGroupBy - for ORDER BY clause
|
|
*/
|
|
typedef struct SortGroupBy
|
|
{
|
|
NodeTag type;
|
|
char *useOp; /* operator to use */
|
|
Node *node; /* Expression */
|
|
} SortGroupBy;
|
|
|
|
/*
|
|
* Alias -
|
|
* specifies an alias for a range variable; the alias might also
|
|
* specify renaming of columns within the table.
|
|
*/
|
|
typedef struct Alias
|
|
{
|
|
NodeTag type;
|
|
char *aliasname; /* aliased rel name (never qualified) */
|
|
List *colnames; /* optional list of column aliases */
|
|
/* Note: colnames is a list of Value nodes (always strings) */
|
|
} Alias;
|
|
|
|
/*
|
|
* RangeVar - range variable, used in FROM clauses
|
|
*
|
|
* Also used to represent table names in utility statements; there, the alias
|
|
* field is not used, and inhOpt shows whether to apply the operation
|
|
* recursively to child tables. In some contexts it is also useful to carry
|
|
* a TEMP table indication here.
|
|
*/
|
|
typedef struct RangeVar
|
|
{
|
|
NodeTag type;
|
|
char *catalogname; /* the catalog (database) name, or NULL */
|
|
char *schemaname; /* the schema name, or NULL */
|
|
char *relname; /* the relation/sequence name */
|
|
InhOption inhOpt; /* expand rel by inheritance?
|
|
* recursively act on children? */
|
|
bool istemp; /* is this a temp relation/sequence? */
|
|
Alias *alias; /* table alias & optional column aliases */
|
|
} RangeVar;
|
|
|
|
/*
|
|
* RangeSubselect - subquery appearing in a FROM clause
|
|
*/
|
|
typedef struct RangeSubselect
|
|
{
|
|
NodeTag type;
|
|
Node *subquery; /* the untransformed sub-select clause */
|
|
Alias *alias; /* table alias & optional column aliases */
|
|
} RangeSubselect;
|
|
|
|
/*
|
|
* IndexElem - index parameters (used in CREATE INDEX)
|
|
*
|
|
* For a plain index, each 'name' is an attribute name in the heap relation,
|
|
* and 'args' is NIL. For a functional index, only one IndexElem is allowed.
|
|
* It has name = name of function and args = list of attribute names that
|
|
* are the function's arguments.
|
|
*/
|
|
typedef struct IndexElem
|
|
{
|
|
NodeTag type;
|
|
char *name; /* name of attribute to index, or function */
|
|
List *args; /* list of names of function arguments */
|
|
char *class; /* name of desired opclass; NULL = default */
|
|
} IndexElem;
|
|
|
|
/*
|
|
* DefElem -
|
|
* a definition (used in definition lists in the form of defname = arg)
|
|
*/
|
|
typedef struct DefElem
|
|
{
|
|
NodeTag type;
|
|
char *defname;
|
|
Node *arg; /* a (Value *) or a (TypeName *) */
|
|
} DefElem;
|
|
|
|
|
|
/****************************************************************************
|
|
* Nodes for a Query tree
|
|
****************************************************************************/
|
|
|
|
/*
|
|
* TargetEntry -
|
|
* a target entry (used in the transformed target list)
|
|
*
|
|
* one of resdom or fjoin is not NULL. a target list is
|
|
* ((<resdom | fjoin> expr) (<resdom | fjoin> expr) ...)
|
|
*/
|
|
typedef struct TargetEntry
|
|
{
|
|
NodeTag type;
|
|
Resdom *resdom; /* fjoin overload this to be a list?? */
|
|
Fjoin *fjoin;
|
|
Node *expr;
|
|
} TargetEntry;
|
|
|
|
/*--------------------
|
|
* RangeTblEntry -
|
|
* A range table is a List of RangeTblEntry nodes.
|
|
*
|
|
* A range table entry may represent a plain relation, a sub-select in
|
|
* FROM, or the result of a JOIN clause. (Only explicit JOIN syntax
|
|
* produces an RTE, not the implicit join resulting from multiple FROM
|
|
* items. This is because we only need the RTE to deal with SQL features
|
|
* like outer joins and join-output-column aliasing.) Other special
|
|
* RTE types also exist, as indicated by RTEKind.
|
|
*
|
|
* alias is an Alias node representing the AS alias-clause attached to the
|
|
* FROM expression, or NULL if no clause.
|
|
*
|
|
* eref is the table reference name and column reference names (either
|
|
* real or aliases). Note that system columns (OID etc) are not included
|
|
* in the column list.
|
|
* eref->relname is required to be present, and should generally be used
|
|
* to identify the RTE for error messages etc.
|
|
*
|
|
* inh is TRUE for relation references that should be expanded to include
|
|
* inheritance children, if the rel has any. This *must* be FALSE for
|
|
* RTEs other than RTE_RELATION entries.
|
|
*
|
|
* inFromCl marks those range variables that are listed in the FROM clause.
|
|
* In SQL, the query can only refer to range variables listed in the
|
|
* FROM clause, but POSTQUEL allows you to refer to tables not listed,
|
|
* in which case a range table entry will be generated. We still support
|
|
* this POSTQUEL feature, although there is some doubt whether it's
|
|
* convenient or merely confusing. The flag is needed since an
|
|
* implicitly-added RTE shouldn't change the namespace for unqualified
|
|
* column names processed later, and it also shouldn't affect the
|
|
* expansion of '*'.
|
|
*
|
|
* checkForRead, checkForWrite, and checkAsUser control run-time access
|
|
* permissions checks. A rel will be checked for read or write access
|
|
* (or both, or neither) per checkForRead and checkForWrite. If
|
|
* checkAsUser is not InvalidOid, then do the permissions checks using
|
|
* the access rights of that user, not the current effective user ID.
|
|
* (This allows rules to act as setuid gateways.)
|
|
*--------------------
|
|
*/
|
|
typedef enum RTEKind
|
|
{
|
|
RTE_RELATION, /* ordinary relation reference */
|
|
RTE_SUBQUERY, /* subquery in FROM */
|
|
RTE_JOIN, /* join */
|
|
RTE_SPECIAL /* special rule relation (NEW or OLD) */
|
|
} RTEKind;
|
|
|
|
typedef struct RangeTblEntry
|
|
{
|
|
NodeTag type;
|
|
|
|
RTEKind rtekind; /* see above */
|
|
|
|
/*
|
|
* XXX the fields applicable to only some rte kinds should be merged
|
|
* into a union. I didn't do this yet because the diffs would impact
|
|
* a lot of code that is being actively worked on. FIXME later.
|
|
*/
|
|
|
|
/*
|
|
* Fields valid for a plain relation RTE (else NULL/zero):
|
|
*/
|
|
char *relname; /* real name of the relation */
|
|
Oid relid; /* OID of the relation */
|
|
|
|
/*
|
|
* Fields valid for a subquery RTE (else NULL):
|
|
*/
|
|
Query *subquery; /* the sub-query */
|
|
|
|
/*
|
|
* Fields valid for a join RTE (else NULL):
|
|
*
|
|
* joincoltypes/joincoltypmods identify the column datatypes of the
|
|
* join result. joinleftcols and joinrightcols identify the source
|
|
* columns from the join's inputs: each entry is either a source column
|
|
* AttrNumber or zero. For normal columns exactly one is nonzero,
|
|
* but both are nonzero for a column "merged" by USING or NATURAL.
|
|
*/
|
|
JoinType jointype; /* type of join */
|
|
List *joincoltypes; /* integer list of column type OIDs */
|
|
List *joincoltypmods; /* integer list of column typmods */
|
|
List *joinleftcols; /* integer list of left-side column #s */
|
|
List *joinrightcols; /* integer list of right-side column #s */
|
|
|
|
/*
|
|
* Fields valid in all RTEs:
|
|
*/
|
|
Alias *alias; /* user-written alias clause, if any */
|
|
Alias *eref; /* expanded reference names */
|
|
bool inh; /* inheritance requested? */
|
|
bool inFromCl; /* present in FROM clause */
|
|
bool checkForRead; /* check rel for read access */
|
|
bool checkForWrite; /* check rel for write access */
|
|
Oid checkAsUser; /* if not zero, check access as this user */
|
|
} RangeTblEntry;
|
|
|
|
/*
|
|
* SortClause -
|
|
* representation of ORDER BY clauses
|
|
*
|
|
* tleSortGroupRef must match ressortgroupref of exactly one Resdom of the
|
|
* associated targetlist; that is the expression to be sorted (or grouped) by.
|
|
* sortop is the OID of the ordering operator.
|
|
*
|
|
* SortClauses are also used to identify Resdoms that we will do a "Unique"
|
|
* filter step on (for SELECT DISTINCT and SELECT DISTINCT ON). The
|
|
* distinctClause list is simply a copy of the relevant members of the
|
|
* sortClause list. Note that distinctClause can be a subset of sortClause,
|
|
* but cannot have members not present in sortClause; and the members that
|
|
* do appear must be in the same order as in sortClause.
|
|
*/
|
|
typedef struct SortClause
|
|
{
|
|
NodeTag type;
|
|
Index tleSortGroupRef; /* reference into targetlist */
|
|
Oid sortop; /* the sort operator to use */
|
|
} SortClause;
|
|
|
|
/*
|
|
* GroupClause -
|
|
* representation of GROUP BY clauses
|
|
*
|
|
* GroupClause is exactly like SortClause except for the nodetag value
|
|
* (it's probably not even really necessary to have two different
|
|
* nodetags...). We have routines that operate interchangeably on both.
|
|
*/
|
|
typedef SortClause GroupClause;
|
|
|
|
|
|
/*****************************************************************************
|
|
* Optimizable Statements
|
|
*****************************************************************************/
|
|
|
|
/* ----------------------
|
|
* Insert Statement
|
|
* ----------------------
|
|
*/
|
|
typedef struct InsertStmt
|
|
{
|
|
NodeTag type;
|
|
RangeVar *relation; /* relation to insert into */
|
|
List *cols; /* optional: names of the target columns */
|
|
|
|
/*
|
|
* An INSERT statement has *either* VALUES or SELECT, never both. If
|
|
* VALUES, a targetList is supplied (empty for DEFAULT VALUES). If
|
|
* SELECT, a complete SelectStmt (or set-operation tree) is supplied.
|
|
*/
|
|
List *targetList; /* the target list (of ResTarget) */
|
|
Node *selectStmt; /* the source SELECT */
|
|
} InsertStmt;
|
|
|
|
/* ----------------------
|
|
* Delete Statement
|
|
* ----------------------
|
|
*/
|
|
typedef struct DeleteStmt
|
|
{
|
|
NodeTag type;
|
|
RangeVar *relation; /* relation to delete from */
|
|
Node *whereClause; /* qualifications */
|
|
} DeleteStmt;
|
|
|
|
/* ----------------------
|
|
* Update Statement
|
|
* ----------------------
|
|
*/
|
|
typedef struct UpdateStmt
|
|
{
|
|
NodeTag type;
|
|
RangeVar *relation; /* relation to update */
|
|
List *targetList; /* the target list (of ResTarget) */
|
|
Node *whereClause; /* qualifications */
|
|
List *fromClause; /* optional from clause for more tables */
|
|
} UpdateStmt;
|
|
|
|
/* ----------------------
|
|
* Select Statement
|
|
*
|
|
* A "simple" SELECT is represented in the output of gram.y by a single
|
|
* SelectStmt node. A SELECT construct containing set operators (UNION,
|
|
* INTERSECT, EXCEPT) is represented by a tree of SelectStmt nodes, in
|
|
* which the leaf nodes are component SELECTs and the internal nodes
|
|
* represent UNION, INTERSECT, or EXCEPT operators. Using the same node
|
|
* type for both leaf and internal nodes allows gram.y to stick ORDER BY,
|
|
* LIMIT, etc, clause values into a SELECT statement without worrying
|
|
* whether it is a simple or compound SELECT.
|
|
* ----------------------
|
|
*/
|
|
typedef enum SetOperation
|
|
{
|
|
SETOP_NONE = 0,
|
|
SETOP_UNION,
|
|
SETOP_INTERSECT,
|
|
SETOP_EXCEPT
|
|
} SetOperation;
|
|
|
|
typedef struct SelectStmt
|
|
{
|
|
NodeTag type;
|
|
|
|
/*
|
|
* These fields are used only in "leaf" SelectStmts.
|
|
*/
|
|
List *distinctClause; /* NULL, list of DISTINCT ON exprs, or
|
|
* lcons(NIL,NIL) for all (SELECT
|
|
* DISTINCT) */
|
|
RangeVar *into; /* target table (for select into table) */
|
|
List *intoColNames; /* column names for into table */
|
|
List *targetList; /* the target list (of ResTarget) */
|
|
List *fromClause; /* the FROM clause */
|
|
Node *whereClause; /* WHERE qualification */
|
|
List *groupClause; /* GROUP BY clauses */
|
|
Node *havingClause; /* HAVING conditional-expression */
|
|
|
|
/*
|
|
* These fields are used in both "leaf" SelectStmts and upper-level
|
|
* SelectStmts. portalname/binary may only be set at the top level.
|
|
*/
|
|
List *sortClause; /* sort clause (a list of SortGroupBy's) */
|
|
char *portalname; /* the portal (cursor) to create */
|
|
bool binary; /* a binary (internal) portal? */
|
|
Node *limitOffset; /* # of result tuples to skip */
|
|
Node *limitCount; /* # of result tuples to return */
|
|
List *forUpdate; /* FOR UPDATE clause */
|
|
|
|
/*
|
|
* These fields are used only in upper-level SelectStmts.
|
|
*/
|
|
SetOperation op; /* type of set op */
|
|
bool all; /* ALL specified? */
|
|
struct SelectStmt *larg; /* left child */
|
|
struct SelectStmt *rarg; /* right child */
|
|
/* Eventually add fields for CORRESPONDING spec here */
|
|
} SelectStmt;
|
|
|
|
/* ----------------------
|
|
* Set Operation node for post-analysis query trees
|
|
*
|
|
* After parse analysis, a SELECT with set operations is represented by a
|
|
* top-level Query node containing the leaf SELECTs as subqueries in its
|
|
* range table. Its setOperations field shows the tree of set operations,
|
|
* with leaf SelectStmt nodes replaced by RangeTblRef nodes, and internal
|
|
* nodes replaced by SetOperationStmt nodes.
|
|
* ----------------------
|
|
*/
|
|
typedef struct SetOperationStmt
|
|
{
|
|
NodeTag type;
|
|
SetOperation op; /* type of set op */
|
|
bool all; /* ALL specified? */
|
|
Node *larg; /* left child */
|
|
Node *rarg; /* right child */
|
|
/* Eventually add fields for CORRESPONDING spec here */
|
|
|
|
/* Fields derived during parse analysis: */
|
|
List *colTypes; /* integer list of OIDs of output column
|
|
* types */
|
|
} SetOperationStmt;
|
|
|
|
|
|
/*****************************************************************************
|
|
* Other Statements (no optimizations required)
|
|
*
|
|
* Some of them require a little bit of transformation (which is also
|
|
* done by transformStmt). The whole structure is then passed on to
|
|
* ProcessUtility (by-passing the optimization step) as the utilityStmt
|
|
* field in Query.
|
|
*****************************************************************************/
|
|
|
|
/* ----------------------
|
|
* Create Schema Statement
|
|
*
|
|
* NOTE: the schemaElts list contains raw parsetrees for component statements
|
|
* of the schema, such as CREATE TABLE, GRANT, etc. These are analyzed and
|
|
* executed after the schema itself is created.
|
|
* ----------------------
|
|
*/
|
|
typedef struct CreateSchemaStmt
|
|
{
|
|
NodeTag type;
|
|
char *schemaname; /* the name of the schema to create */
|
|
char *authid; /* the owner of the created schema */
|
|
List *schemaElts; /* schema components (list of parsenodes) */
|
|
} CreateSchemaStmt;
|
|
|
|
/* ----------------------
|
|
* Alter Table
|
|
*
|
|
* The fields are used in different ways by the different variants of
|
|
* this command.
|
|
* ----------------------
|
|
*/
|
|
typedef struct AlterTableStmt
|
|
{
|
|
NodeTag type;
|
|
char subtype; /*------------
|
|
* A = add column
|
|
* T = alter column default
|
|
* S = alter column statistics
|
|
* M = alter column storage
|
|
* D = drop column
|
|
* C = add constraint
|
|
* X = drop constraint
|
|
* E = create toast table
|
|
* U = change owner
|
|
*------------
|
|
*/
|
|
RangeVar *relation; /* table to work on */
|
|
char *name; /* column or constraint name to act on, or
|
|
* new owner */
|
|
Node *def; /* definition of new column or constraint */
|
|
int behavior; /* CASCADE or RESTRICT drop behavior */
|
|
} AlterTableStmt;
|
|
|
|
/* ----------------------
|
|
* Grant Statement
|
|
* ----------------------
|
|
*/
|
|
|
|
typedef struct GrantStmt
|
|
{
|
|
NodeTag type;
|
|
bool is_grant; /* not revoke */
|
|
int objtype;
|
|
List *objects; /* list of names (as Value strings)
|
|
* or relations (as RangeVar's) */
|
|
List *privileges; /* integer list of privilege codes */
|
|
List *grantees; /* list of PrivGrantee nodes */
|
|
} GrantStmt;
|
|
|
|
typedef struct PrivGrantee
|
|
{
|
|
NodeTag type;
|
|
char *username; /* if both are NULL then PUBLIC */
|
|
char *groupname;
|
|
} PrivGrantee;
|
|
|
|
typedef struct FuncWithArgs
|
|
{
|
|
NodeTag type;
|
|
char *funcname;
|
|
List *funcargs; /* list of Typename nodes */
|
|
} FuncWithArgs;
|
|
|
|
/* This is only used internally in gram.y. */
|
|
typedef struct PrivTarget
|
|
{
|
|
NodeTag type;
|
|
int objtype;
|
|
List *objs;
|
|
} PrivTarget;
|
|
|
|
/* ----------------------
|
|
* Close Portal Statement
|
|
* ----------------------
|
|
*/
|
|
typedef struct ClosePortalStmt
|
|
{
|
|
NodeTag type;
|
|
char *portalname; /* name of the portal (cursor) */
|
|
} ClosePortalStmt;
|
|
|
|
/* ----------------------
|
|
* Copy Statement
|
|
* ----------------------
|
|
*/
|
|
typedef struct CopyStmt
|
|
{
|
|
NodeTag type;
|
|
bool binary; /* is a binary copy? */
|
|
RangeVar *relation; /* the relation to copy */
|
|
bool oids; /* copy oid's? */
|
|
int direction; /* TO or FROM */
|
|
char *filename; /* if NULL, use stdin/stdout */
|
|
char *delimiter; /* delimiter character, \t by default */
|
|
char *null_print; /* how to print NULLs, `\N' by default */
|
|
} CopyStmt;
|
|
|
|
/* ----------------------
|
|
* Create Table Statement
|
|
*
|
|
* NOTE: in the raw gram.y output, ColumnDef, Constraint, and FkConstraint
|
|
* nodes are intermixed in tableElts, and constraints is NIL. After parse
|
|
* analysis, tableElts contains just ColumnDefs, and constraints contains
|
|
* just Constraint nodes (in fact, only CONSTR_CHECK nodes, in the present
|
|
* implementation).
|
|
* ----------------------
|
|
*/
|
|
typedef struct CreateStmt
|
|
{
|
|
NodeTag type;
|
|
RangeVar *relation; /* relation to create */
|
|
List *tableElts; /* column definitions (list of ColumnDef) */
|
|
List *inhRelations; /* relations to inherit from */
|
|
List *constraints; /* constraints (list of Constraint nodes) */
|
|
bool hasoids; /* should it have OIDs? */
|
|
} CreateStmt;
|
|
|
|
/* ----------
|
|
* Definitions for plain (non-FOREIGN KEY) constraints in CreateStmt
|
|
*
|
|
* XXX probably these ought to be unified with FkConstraints at some point?
|
|
*
|
|
* For constraints that use expressions (CONSTR_DEFAULT, CONSTR_CHECK)
|
|
* we may have the expression in either "raw" form (an untransformed
|
|
* parse tree) or "cooked" form (the nodeToString representation of
|
|
* an executable expression tree), depending on how this Constraint
|
|
* node was created (by parsing, or by inheritance from an existing
|
|
* relation). We should never have both in the same node!
|
|
*
|
|
* Constraint attributes (DEFERRABLE etc) are initially represented as
|
|
* separate Constraint nodes for simplicity of parsing. analyze.c makes
|
|
* a pass through the constraints list to attach the info to the appropriate
|
|
* FkConstraint node (and, perhaps, someday to other kinds of constraints).
|
|
* ----------
|
|
*/
|
|
|
|
typedef enum ConstrType /* types of constraints */
|
|
{
|
|
CONSTR_NULL, /* not SQL92, but a lot of people expect
|
|
* it */
|
|
CONSTR_NOTNULL,
|
|
CONSTR_DEFAULT,
|
|
CONSTR_CHECK,
|
|
CONSTR_PRIMARY,
|
|
CONSTR_UNIQUE,
|
|
CONSTR_ATTR_DEFERRABLE, /* attributes for previous constraint node */
|
|
CONSTR_ATTR_NOT_DEFERRABLE,
|
|
CONSTR_ATTR_DEFERRED,
|
|
CONSTR_ATTR_IMMEDIATE
|
|
} ConstrType;
|
|
|
|
typedef struct Constraint
|
|
{
|
|
NodeTag type;
|
|
ConstrType contype;
|
|
char *name; /* name, or NULL if unnamed */
|
|
Node *raw_expr; /* expr, as untransformed parse tree */
|
|
char *cooked_expr; /* expr, as nodeToString representation */
|
|
List *keys; /* Ident nodes naming referenced column(s) */
|
|
} Constraint;
|
|
|
|
/* ----------
|
|
* Definitions for FOREIGN KEY constraints in CreateStmt
|
|
* ----------
|
|
*/
|
|
#define FKCONSTR_ON_KEY_NOACTION 0x0000
|
|
#define FKCONSTR_ON_KEY_RESTRICT 0x0001
|
|
#define FKCONSTR_ON_KEY_CASCADE 0x0002
|
|
#define FKCONSTR_ON_KEY_SETNULL 0x0004
|
|
#define FKCONSTR_ON_KEY_SETDEFAULT 0x0008
|
|
|
|
#define FKCONSTR_ON_DELETE_MASK 0x000F
|
|
#define FKCONSTR_ON_DELETE_SHIFT 0
|
|
|
|
#define FKCONSTR_ON_UPDATE_MASK 0x00F0
|
|
#define FKCONSTR_ON_UPDATE_SHIFT 4
|
|
|
|
typedef struct FkConstraint
|
|
{
|
|
NodeTag type;
|
|
char *constr_name; /* Constraint name */
|
|
RangeVar *pktable; /* Primary key table */
|
|
List *fk_attrs; /* Attributes of foreign key */
|
|
List *pk_attrs; /* Corresponding attrs in PK table */
|
|
char *match_type; /* FULL or PARTIAL */
|
|
int32 actions; /* ON DELETE/UPDATE actions */
|
|
bool deferrable; /* DEFERRABLE */
|
|
bool initdeferred; /* INITIALLY DEFERRED */
|
|
} FkConstraint;
|
|
|
|
/* ----------------------
|
|
* Create/Drop TRIGGER Statements
|
|
* ----------------------
|
|
*/
|
|
|
|
typedef struct CreateTrigStmt
|
|
{
|
|
NodeTag type;
|
|
char *trigname; /* TRIGGER' name */
|
|
RangeVar *relation; /* triggered relation */
|
|
char *funcname; /* function to call (or NULL) */
|
|
List *args; /* list of (T_String) Values or NULL */
|
|
bool before; /* BEFORE/AFTER */
|
|
bool row; /* ROW/STATEMENT */
|
|
char actions[4]; /* Insert, Update, Delete */
|
|
char *lang; /* currently not used, always NULL */
|
|
char *text; /* AS 'text' */
|
|
List *attr; /* UPDATE OF a, b,... (NI) or NULL */
|
|
char *when; /* WHEN 'a > 10 ...' (NI) or NULL */
|
|
|
|
/* The following are used for referential */
|
|
/* integrity constraint triggers */
|
|
bool isconstraint; /* This is an RI trigger */
|
|
bool deferrable; /* [NOT] DEFERRABLE */
|
|
bool initdeferred; /* INITIALLY {DEFERRED|IMMEDIATE} */
|
|
RangeVar *constrrel; /* opposite relation */
|
|
} CreateTrigStmt;
|
|
|
|
typedef struct DropTrigStmt
|
|
{
|
|
NodeTag type;
|
|
char *trigname; /* TRIGGER' name */
|
|
RangeVar *relation; /* triggered relation */
|
|
} DropTrigStmt;
|
|
|
|
/* ----------------------
|
|
* Create/Drop PROCEDURAL LANGUAGE Statement
|
|
* ----------------------
|
|
*/
|
|
typedef struct CreatePLangStmt
|
|
{
|
|
NodeTag type;
|
|
char *plname; /* PL name */
|
|
char *plhandler; /* PL call handler function */
|
|
char *plcompiler; /* lancompiler text */
|
|
bool pltrusted; /* PL is trusted */
|
|
} CreatePLangStmt;
|
|
|
|
typedef struct DropPLangStmt
|
|
{
|
|
NodeTag type;
|
|
char *plname; /* PL name */
|
|
} DropPLangStmt;
|
|
|
|
/* ----------------------
|
|
* Create/Alter/Drop User Statements
|
|
* ----------------------
|
|
*/
|
|
typedef struct CreateUserStmt
|
|
{
|
|
NodeTag type;
|
|
char *user; /* PostgreSQL user login name */
|
|
List *options; /* List of DefElem nodes */
|
|
} CreateUserStmt;
|
|
|
|
typedef struct AlterUserStmt
|
|
{
|
|
NodeTag type;
|
|
char *user; /* PostgreSQL user login name */
|
|
List *options; /* List of DefElem nodes */
|
|
} AlterUserStmt;
|
|
|
|
typedef struct AlterUserSetStmt
|
|
{
|
|
NodeTag type;
|
|
char *user;
|
|
char *variable;
|
|
List *value;
|
|
} AlterUserSetStmt;
|
|
|
|
typedef struct DropUserStmt
|
|
{
|
|
NodeTag type;
|
|
List *users; /* List of users to remove */
|
|
} DropUserStmt;
|
|
|
|
/* ----------------------
|
|
* Create/Alter/Drop Group Statements
|
|
* ----------------------
|
|
*/
|
|
typedef struct CreateGroupStmt
|
|
{
|
|
NodeTag type;
|
|
char *name; /* name of the new group */
|
|
List *options; /* List of DefElem nodes */
|
|
} CreateGroupStmt;
|
|
|
|
typedef struct AlterGroupStmt
|
|
{
|
|
NodeTag type;
|
|
char *name; /* name of group to alter */
|
|
int action; /* +1 = add, -1 = drop user */
|
|
List *listUsers; /* list of users to add/drop */
|
|
} AlterGroupStmt;
|
|
|
|
typedef struct DropGroupStmt
|
|
{
|
|
NodeTag type;
|
|
char *name;
|
|
} DropGroupStmt;
|
|
|
|
/* ----------------------
|
|
* Create SEQUENCE Statement
|
|
* ----------------------
|
|
*/
|
|
|
|
typedef struct CreateSeqStmt
|
|
{
|
|
NodeTag type;
|
|
RangeVar *sequence; /* the sequence to create */
|
|
List *options;
|
|
} CreateSeqStmt;
|
|
|
|
/* ----------------------
|
|
* Create Version Statement
|
|
* ----------------------
|
|
*/
|
|
typedef struct VersionStmt
|
|
{
|
|
NodeTag type;
|
|
char *relname; /* the new relation */
|
|
int direction; /* FORWARD | BACKWARD */
|
|
char *fromRelname; /* relation to create a version */
|
|
char *date; /* date of the snapshot */
|
|
} VersionStmt;
|
|
|
|
/* ----------------------
|
|
* Create {Operator|Type|Aggregate} Statement
|
|
* ----------------------
|
|
*/
|
|
typedef struct DefineStmt
|
|
{
|
|
NodeTag type;
|
|
int defType; /* OPERATOR|TYPE_P|AGGREGATE */
|
|
char *defname;
|
|
List *definition; /* a list of DefElem */
|
|
} DefineStmt;
|
|
|
|
/* ----------------------
|
|
* Create Domain Statement
|
|
* ----------------------
|
|
*/
|
|
typedef struct CreateDomainStmt
|
|
{
|
|
NodeTag type;
|
|
char *domainname; /* name of domain to create */
|
|
TypeName *typename; /* the base type */
|
|
List *constraints; /* constraints (list of Constraint nodes) */
|
|
} CreateDomainStmt;
|
|
|
|
/* ----------------------
|
|
* Drop Table|Sequence|View|Index|Rule|Type Statement
|
|
* ----------------------
|
|
*/
|
|
|
|
#define DROP_TABLE 1
|
|
#define DROP_SEQUENCE 2
|
|
#define DROP_VIEW 3
|
|
#define DROP_INDEX 4
|
|
#define DROP_RULE 5
|
|
#define DROP_TYPE 6
|
|
#define DROP_DOMAIN 7
|
|
|
|
typedef struct DropStmt
|
|
{
|
|
NodeTag type;
|
|
List *objects;
|
|
int removeType;
|
|
int behavior; /* CASCADE or RESTRICT drop behavior */
|
|
} DropStmt;
|
|
|
|
/* ----------------------
|
|
* Truncate Table Statement
|
|
* ----------------------
|
|
*/
|
|
typedef struct TruncateStmt
|
|
{
|
|
NodeTag type;
|
|
RangeVar *relation; /* relation to be truncated */
|
|
} TruncateStmt;
|
|
|
|
/* ----------------------
|
|
* Comment On Statement
|
|
* ----------------------
|
|
*/
|
|
typedef struct CommentStmt
|
|
{
|
|
NodeTag type;
|
|
int objtype; /* Object's type */
|
|
char *objschema; /* Schema where object is defined,
|
|
* if object is schema specific */
|
|
char *objname; /* Name of the object */
|
|
char *objproperty; /* Property Id (such as column) */
|
|
List *objlist; /* Arguments for VAL objects */
|
|
char *comment; /* The comment to insert */
|
|
} CommentStmt;
|
|
|
|
/* ----------------------
|
|
* Begin Recipe Statement
|
|
* ----------------------
|
|
*/
|
|
typedef struct RecipeStmt
|
|
{
|
|
NodeTag type;
|
|
char *recipeName; /* name of the recipe */
|
|
} RecipeStmt;
|
|
|
|
/* ----------------------
|
|
* Fetch Statement
|
|
* ----------------------
|
|
*/
|
|
typedef struct FetchStmt
|
|
{
|
|
NodeTag type;
|
|
int direction; /* FORWARD or BACKWARD */
|
|
int howMany; /* amount to fetch ("ALL" --> 0) */
|
|
char *portalname; /* name of portal (cursor) */
|
|
bool ismove; /* TRUE if MOVE */
|
|
} FetchStmt;
|
|
|
|
/* ----------------------
|
|
* Create Index Statement
|
|
* ----------------------
|
|
*/
|
|
typedef struct IndexStmt
|
|
{
|
|
NodeTag type;
|
|
char *idxname; /* name of the index */
|
|
RangeVar *relation; /* relation to build index on */
|
|
char *accessMethod; /* name of access method (eg. btree) */
|
|
List *indexParams; /* a list of IndexElem */
|
|
Node *whereClause; /* qualification (partial-index predicate) */
|
|
List *rangetable; /* range table for qual, filled in by
|
|
* transformStmt() */
|
|
bool unique; /* is index unique? */
|
|
bool primary; /* is index on primary key? */
|
|
} IndexStmt;
|
|
|
|
/* ----------------------
|
|
* Create Function Statement
|
|
* ----------------------
|
|
*/
|
|
typedef struct ProcedureStmt
|
|
{
|
|
NodeTag type;
|
|
bool replace; /* T => replace if already exists */
|
|
char *funcname; /* name of function to create */
|
|
List *argTypes; /* list of argument types (TypeName nodes) */
|
|
Node *returnType; /* the return type (a TypeName node) */
|
|
List *withClause; /* a list of DefElem */
|
|
List *as; /* definition of function body */
|
|
char *language; /* C, SQL, etc */
|
|
} ProcedureStmt;
|
|
|
|
/* ----------------------
|
|
* Drop Aggregate Statement
|
|
* ----------------------
|
|
*/
|
|
typedef struct RemoveAggrStmt
|
|
{
|
|
NodeTag type;
|
|
char *aggname; /* aggregate to drop */
|
|
Node *aggtype; /* TypeName for input datatype, or NULL */
|
|
} RemoveAggrStmt;
|
|
|
|
/* ----------------------
|
|
* Drop Function Statement
|
|
* ----------------------
|
|
*/
|
|
typedef struct RemoveFuncStmt
|
|
{
|
|
NodeTag type;
|
|
char *funcname; /* function to drop */
|
|
List *args; /* types of the arguments */
|
|
} RemoveFuncStmt;
|
|
|
|
/* ----------------------
|
|
* Drop Operator Statement
|
|
* ----------------------
|
|
*/
|
|
typedef struct RemoveOperStmt
|
|
{
|
|
NodeTag type;
|
|
char *opname; /* operator to drop */
|
|
List *args; /* types of the arguments */
|
|
} RemoveOperStmt;
|
|
|
|
/* ----------------------
|
|
* Alter Table Rename Statement
|
|
* ----------------------
|
|
*/
|
|
typedef struct RenameStmt
|
|
{
|
|
NodeTag type;
|
|
RangeVar *relation; /* relation to be altered */
|
|
char *column; /* if NULL, rename the relation name to
|
|
* the new name. Otherwise, rename this
|
|
* column name. */
|
|
char *newname; /* the new name */
|
|
} RenameStmt;
|
|
|
|
/* ----------------------
|
|
* Create Rule Statement
|
|
* ----------------------
|
|
*/
|
|
typedef struct RuleStmt
|
|
{
|
|
NodeTag type;
|
|
RangeVar *relation; /* relation the rule is for */
|
|
char *rulename; /* name of the rule */
|
|
Node *whereClause; /* qualifications */
|
|
CmdType event; /* SELECT, INSERT, etc */
|
|
bool instead; /* is a 'do instead'? */
|
|
List *actions; /* the action statements */
|
|
} RuleStmt;
|
|
|
|
/* ----------------------
|
|
* Notify Statement
|
|
* ----------------------
|
|
*/
|
|
typedef struct NotifyStmt
|
|
{
|
|
NodeTag type;
|
|
RangeVar *relation; /* qualified name to notify */
|
|
} NotifyStmt;
|
|
|
|
/* ----------------------
|
|
* Listen Statement
|
|
* ----------------------
|
|
*/
|
|
typedef struct ListenStmt
|
|
{
|
|
NodeTag type;
|
|
RangeVar *relation; /* qualified name to listen on */
|
|
} ListenStmt;
|
|
|
|
/* ----------------------
|
|
* Unlisten Statement
|
|
* ----------------------
|
|
*/
|
|
typedef struct UnlistenStmt
|
|
{
|
|
NodeTag type;
|
|
RangeVar *relation; /* qualified name to unlisten on, or '*' */
|
|
} UnlistenStmt;
|
|
|
|
/* ----------------------
|
|
* {Begin|Abort|End} Transaction Statement
|
|
* ----------------------
|
|
*/
|
|
typedef struct TransactionStmt
|
|
{
|
|
NodeTag type;
|
|
int command; /* BEGIN|END|ABORT */
|
|
} TransactionStmt;
|
|
|
|
/* ----------------------
|
|
* Create View Statement
|
|
* ----------------------
|
|
*/
|
|
typedef struct ViewStmt
|
|
{
|
|
NodeTag type;
|
|
RangeVar *view; /* the view to be created */
|
|
List *aliases; /* target column names */
|
|
Query *query; /* the SQL statement */
|
|
} ViewStmt;
|
|
|
|
/* ----------------------
|
|
* Load Statement
|
|
* ----------------------
|
|
*/
|
|
typedef struct LoadStmt
|
|
{
|
|
NodeTag type;
|
|
char *filename; /* file to load */
|
|
} LoadStmt;
|
|
|
|
/* ----------------------
|
|
* Createdb Statement
|
|
* ----------------------
|
|
*/
|
|
typedef struct CreatedbStmt
|
|
{
|
|
NodeTag type;
|
|
char *dbname; /* name of database to create */
|
|
char *dbowner; /* name of owner (NULL = default) */
|
|
char *dbpath; /* location of database (NULL = default) */
|
|
char *dbtemplate; /* template to use (NULL = default) */
|
|
int encoding; /* MULTIBYTE encoding (-1 = use default) */
|
|
} CreatedbStmt;
|
|
|
|
/* ----------------------
|
|
* Alter Database
|
|
* ----------------------
|
|
*/
|
|
typedef struct AlterDatabaseSetStmt
|
|
{
|
|
NodeTag type;
|
|
char *dbname;
|
|
char *variable;
|
|
List *value;
|
|
} AlterDatabaseSetStmt;
|
|
|
|
/* ----------------------
|
|
* Dropdb Statement
|
|
* ----------------------
|
|
*/
|
|
typedef struct DropdbStmt
|
|
{
|
|
NodeTag type;
|
|
char *dbname; /* database to drop */
|
|
} DropdbStmt;
|
|
|
|
/* ----------------------
|
|
* Cluster Statement (support pbrown's cluster index implementation)
|
|
* ----------------------
|
|
*/
|
|
typedef struct ClusterStmt
|
|
{
|
|
NodeTag type;
|
|
RangeVar *relation; /* relation being indexed */
|
|
char *indexname; /* original index defined */
|
|
} ClusterStmt;
|
|
|
|
/* ----------------------
|
|
* Vacuum and Analyze Statements
|
|
*
|
|
* Even though these are nominally two statements, it's convenient to use
|
|
* just one node type for both.
|
|
* ----------------------
|
|
*/
|
|
typedef struct VacuumStmt
|
|
{
|
|
NodeTag type;
|
|
bool vacuum; /* do VACUUM step */
|
|
bool full; /* do FULL (non-concurrent) vacuum */
|
|
bool analyze; /* do ANALYZE step */
|
|
bool freeze; /* early-freeze option */
|
|
bool verbose; /* print progress info */
|
|
RangeVar *relation; /* single table to process, or NULL */
|
|
List *va_cols; /* list of column names, or NIL for all */
|
|
} VacuumStmt;
|
|
|
|
/* ----------------------
|
|
* Explain Statement
|
|
* ----------------------
|
|
*/
|
|
typedef struct ExplainStmt
|
|
{
|
|
NodeTag type;
|
|
Query *query; /* the query */
|
|
bool verbose; /* print plan info */
|
|
bool analyze; /* get statistics by executing plan */
|
|
} ExplainStmt;
|
|
|
|
/* ----------------------
|
|
* Checkpoint Statement
|
|
* ----------------------
|
|
*/
|
|
typedef struct CheckPointStmt
|
|
{
|
|
NodeTag type;
|
|
} CheckPointStmt;
|
|
|
|
/* ----------------------
|
|
* Set Statement
|
|
* ----------------------
|
|
*/
|
|
|
|
typedef struct VariableSetStmt
|
|
{
|
|
NodeTag type;
|
|
char *name;
|
|
List *args;
|
|
} VariableSetStmt;
|
|
|
|
/* ----------------------
|
|
* Show Statement
|
|
* ----------------------
|
|
*/
|
|
|
|
typedef struct VariableShowStmt
|
|
{
|
|
NodeTag type;
|
|
char *name;
|
|
} VariableShowStmt;
|
|
|
|
/* ----------------------
|
|
* Reset Statement
|
|
* ----------------------
|
|
*/
|
|
|
|
typedef struct VariableResetStmt
|
|
{
|
|
NodeTag type;
|
|
char *name;
|
|
} VariableResetStmt;
|
|
|
|
/* ----------------------
|
|
* LOCK Statement
|
|
* ----------------------
|
|
*/
|
|
typedef struct LockStmt
|
|
{
|
|
NodeTag type;
|
|
List *relations; /* relations to lock */
|
|
int mode; /* lock mode */
|
|
} LockStmt;
|
|
|
|
/* ----------------------
|
|
* SET CONSTRAINTS Statement
|
|
* ----------------------
|
|
*/
|
|
typedef struct ConstraintsSetStmt
|
|
{
|
|
NodeTag type;
|
|
List *constraints; /* List of names as Value strings */
|
|
bool deferred;
|
|
} ConstraintsSetStmt;
|
|
|
|
/* ----------------------
|
|
* REINDEX Statement
|
|
* ----------------------
|
|
*/
|
|
typedef struct ReindexStmt
|
|
{
|
|
NodeTag type;
|
|
int reindexType; /* INDEX|TABLE|DATABASE */
|
|
RangeVar *relation; /* Table or index to reindex */
|
|
const char *name; /* name of database to reindex */
|
|
bool force;
|
|
bool all;
|
|
} ReindexStmt;
|
|
|
|
#endif /* PARSENODES_H */
|