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f62d1253ef
> these patches define the UNLISTEN sql command. The code already > existed but it was unknown to the parser. Now it can be used > like the listen command. > You must make clean and delete gram.c and parser.h before make.
367 lines
9.4 KiB
C
367 lines
9.4 KiB
C
/*-------------------------------------------------------------------------
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*
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* psqlHelp.h--
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* Help for query language syntax
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*
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* Copyright (c) 1994, Regents of the University of California
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*
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* $Id: psqlHelp.h,v 1.50 1998/08/25 21:36:58 scrappy Exp $
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*
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*-------------------------------------------------------------------------
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*/
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struct _helpStruct
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{
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char *cmd; /* the command name */
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char *help; /* the help associated with it */
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char *syntax; /* the syntax associated with it */
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};
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static struct _helpStruct QL_HELP[] = {
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{"abort transaction",
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"abort the current transaction",
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"\
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\tabort [transaction|work];"},
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{"alter table",
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"add/rename attributes, rename tables",
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"\
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\tALTER TABLE class_name [*] ADD COLUMN attr type\n\
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\tALTER TABLE class_name [*] RENAME [COLUMN] attr1 TO attr2\n\
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\tALTER TABLE class_name1 RENAME TO class_name2"},
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{"alter user",
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"alter system information for a user",
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"\
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\tALTER USER user_name\n\
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\t[WITH PASSWORD password]\n\
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\t[CREATEDB | NOCCREATEDB]\n\
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\t[CREATEUSER | NOCREATEUSER]\n\
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\t[IN GROUP group_1, ...groupN]\n\
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\t[VALID UNTIL 'abstime'];"},
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{"begin work",
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"begin a new transaction",
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"\
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\tBEGIN [WORK|TRANSACTION];"},
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{"cluster",
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"create a clustered index (from an existing index)",
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"\
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\tCLUSTER index_name ON relation_name"},
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{"close",
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"close an existing cursor (cursor)",
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"\
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\tCLOSE cursorname;"},
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{"commit work",
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"commit a transaction",
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"\
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\tCOMMIT [WORK|TRANSACTION]"},
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{"copy",
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"copy data to and from a table",
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"\
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\tCOPY [BINARY] class_name [WITH OIDS]\n\
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\tTO|FROM filename|STDIN|STDOUT [USING DELIMITERS 'delim'];"},
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{"create",
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"Please be more specific:",
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"\
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\tcreate aggregate\n\
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\tcreate database\n\
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\tcreate function\n\
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\tcreate index\n\
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\tcreate operator\n\
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\tcreate rule\n\
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\tcreate sequence\n\
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\tcreate table\n\
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\tcreate trigger\n\
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\tcreate type\n\
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\tcreate view"},
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{"create aggregate",
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"define an aggregate function",
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"\
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\tCREATE AGGREGATE agg_name [AS] (BASETYPE = data_type, \n\
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\t[SFUNC1 = sfunc_1, STYPE1 = sfunc1_return_type]\n\
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\t[SFUNC2 = sfunc_2, STYPE2 = sfunc2_return_type]\n\
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\t[,FINALFUNC = final-function]\n\
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\t[,INITCOND1 = initial-cond1][,INITCOND2 = initial-cond2]);"},
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{"create database",
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"create a database",
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"\
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\tCREATE DATABASE dbname [WITH LOCATION = 'dbpath']"},
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{"create function",
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"create a user-defined function",
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"\
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\tCREATE FUNCTION function_name ([type1, ...typeN]) RETURNS return_type\n\
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\tAS 'object_filename'|'sql-queries'\n\
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\tLANGUAGE 'c'|'sql'|'internal';"},
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{"create index",
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"construct an index",
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"\
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\tCREATE [UNIQUE] INDEX indexname ON class_name [USING access_method]\n\
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( attr1 [type_class1], ...attrN | funcname(attr1, ...) [type_class] );"},
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{"create operator",
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"create a user-defined operator",
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"\
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\tCREATE OPERATOR operator_name (\n\
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\t[LEFTARG = type1][,RIGHTARG = type2]\n\
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\t,PROCEDURE = func_name,\n\
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\t[,COMMUTATOR = com_op][,NEGATOR = neg_op]\n\
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\t[,RESTRICT = res_proc][,HASHES]\n\
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\t[,JOIN = join_proc][,SORT = sort_op1...sort_opN]);"},
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{"create rule",
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"define a new rule",
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"\
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\tCREATE RULE rule_name AS ON\n\
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\t[SELECT|UPDATE|DELETE|INSERT]\n\
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\tTO object [WHERE qual]\n\
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\tDO [INSTEAD] [action|NOTHING|[actions]];"},
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{"create sequence",
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"create a new sequence number generator",
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"\
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\tCREATE SEQUENCE sequence_name\n\
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\t[INCREMENT number]\n\
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\t[START number]\n\
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\t[MINVALUE number]\n\
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\t[MAXVALUE number]\n\
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\t[CACHE number]\n\
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\t[CYCLE];"},
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{"create table",
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"create a new table",
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"\
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\tCREATE TABLE class_name\n\
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\t(attr1 type1 [DEFAULT expression] [NOT NULL], ...attrN)\n\
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\t[INHERITS (class_name1, ...class_nameN)\n\
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\t[[CONSTRAINT name] CHECK condition1, ...conditionN] ]\n\
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;"},
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{"create trigger",
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"create a new trigger",
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"\
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\tCREATE TRIGGER trigger_name AFTER|BEFORE event1 [OR event2 [OR event3] ]\n\
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\tON class_name FOR EACH ROW|STATEMENT\n\
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\tEXECUTE PROCEDURE func_name ([arguments])\n\
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\n\
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\teventX is one of INSERT, DELETE, UPDATE"},
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{"create type",
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"create a new user-defined base data type",
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"\
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\tCREATE TYPE typename (\n\
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\tINTERNALLENGTH = (number|VARIABLE),\n\
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\t[EXTERNALLENGTH = (number|VARIABLE),]\n\
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\tINPUT = input_function, OUTPUT = output_function\n\
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\t[,ELEMENT = typename][,DELIMITER = character][,DEFAULT=\'<string>\']\n\
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\t[,SEND = send_function][,RECEIVE = receive_function][,PASSEDBYVALUE]);"},
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{"create user",
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"create a new user",
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"\
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\tCREATE USER user_name\n\
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\t[WITH PASSWORD password]\n\
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\t[CREATEDB | NOCREATEDB]\n\
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\t[CREATEUSER | NOCREATEUSER]\n\
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\t[IN GROUP group1, ...groupN]\n\
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\t[VALID UNTIL 'abstime'];"},
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{"create view",
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"create a view",
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"\
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\tCREATE VIEW view_name AS\n\
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\tSELECT [DISTINCT [ON attrN]]\n\
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\texpr1 [AS attr1], ...exprN\n\
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\t[FROM from_list]\n\
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\t[WHERE qual]\n\
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\t[GROUP BY group_list];"},
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{"declare",
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"set up a cursor",
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"\
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\tDECLARE cursorname [BINARY] CURSOR FOR\n\
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\tSELECT [DISTINCT [ON attrN]]\n\
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\texpr1 [AS attr1], ...exprN\n\
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\t[FROM from_list]\n\
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\t[WHERE qual]\n\
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\t[GROUP BY group_list]\n\
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\t[HAVING having_clause]\n\
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\t[ORDER BY attr1 [USING op1], ...attrN]\n\
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\t[UNION [ALL] SELECT ...];"},
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{"delete",
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"delete tuples",
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"\
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\tDELETE FROM class_name [WHERE qual];"},
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{"drop",
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"Please be more specific:",
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"\
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\tdrop aggregate\n\
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\tdrop database\n\
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\tdrop function\n\
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\tdrop index\n\
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\tdrop operator\n\
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\tdrop rule\n\
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\tdrop sequence\n\
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\tdrop table\n\
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\tdrop trigger\n\
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\tdrop type\n\
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\tdrop view"},
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{"drop aggregate",
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"remove an aggregate function",
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"\
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\tDROP AGGREGATE agg_name agg_type|*;"},
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{"drop database",
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"remove a database",
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"\
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\tDROP DATABASE dbname"},
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{"drop function",
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"remove a user-defined function",
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"\
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\tDROP FUNCTION funcname ([type1, ...typeN]);"},
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{"drop index",
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"remove an existing index",
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"\
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\tDROP INDEX indexname;"},
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{"drop operator",
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"remove a user-defined operator",
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"\
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\tDROP OPERATOR operator_name ([ltype|NONE],[RTYPE|none]);"},
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{"drop rule",
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"remove a rule",
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"\
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\tDROP RULE rulename;"},
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{"drop sequence",
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"remove a sequence number generator",
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"\
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\tDROP SEQUENCE sequence_name[, ...sequence_nameN];"},
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{"drop table",
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"remove a table",
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"\
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\tDROP TABLE class_name1, ...class_nameN;"},
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{"drop trigger",
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"remove a trigger",
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"\
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\tDROP TRIGGER trigger_name ON class_name;"},
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{"drop type",
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"remove a user-defined base type",
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"\
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\tDROP TYPE typename;"},
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{"drop user",
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"remove a user from the system",
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"\
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\tDROP USER user_name;"},
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{"drop view",
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"remove a view",
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"\
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\tDROP VIEW view_name"},
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{"end work",
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"end the current transaction",
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"\
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\tEND [WORK|TRANSACTION];"},
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{"explain",
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"explain the query execution plan",
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"\
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\tEXPLAIN [VERBOSE] query"},
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{"fetch",
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"retrieve tuples from a cursor",
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"\
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\tFETCH [FORWARD|BACKWARD] [number|ALL] [IN cursorname];"},
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{"grant",
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"grant access control to a user or group",
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"\
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\tGRANT privilege1, ...privilegeN ON rel1, ...relN TO \n\
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[PUBLIC|GROUP group|username]\n\
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\t privilege is ALL|SELECT|INSERT|UPDATE|DELETE|RULE"},
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{"insert",
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"insert tuples",
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"\
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\tINSERT INTO class_name [(attr1, ...attrN)]\n\
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\tVALUES (expr1,..exprN) |\n\
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\tSELECT [DISTINCT [ON attrN]]\n\
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\texpr1, ...exprN\n\
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\t[FROM from_clause]\n\
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\t[WHERE qual]\n\
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\t[GROUP BY group_list]\n\
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\t[HAVING having_clause]\n\
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\t[UNION [ALL] SELECT ...];"},
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{"listen",
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"listen for notification on a relation name",
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"\
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\tLISTEN class_name|\"name\""},
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{"load",
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"dynamically load a module",
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"\
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\tLOAD 'filename';"},
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{"lock",
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"exclusive lock a table inside a transaction",
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"\
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\tLOCK [TABLE] class_name;"},
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{"move",
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"move an cursor position",
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"\
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\tMOVE [FORWARD|BACKWARD] [number|ALL] [IN cursorname];"},
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{"notify",
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"signal all frontends and backends listening on a relation",
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"\
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\tNOTIFY class_name"},
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{"reset",
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"set run-time environment back to default",
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#ifdef MULTIBYTE
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"\
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\tRESET DateStyle|GEQO|R_PLANS|CLIENT_ENCODING"},
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#else
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"\
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\tRESET DateStyle|GEQO|R_PLANS"},
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#endif
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{"revoke",
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"revoke access control from a user or group",
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"\
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\tREVOKE privilege1, ...privilegeN ON rel1, ...relN FROM \n\
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[PUBLIC|GROUP group|username]\n\
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\t privilege is ALL|SELECT|INSERT|UPDATE|DELETE|RULE"},
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{"rollback work",
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"abort a transaction",
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"\
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\tROLLBACK [WORK|TRANSACTION]"},
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{"select",
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"retrieve tuples",
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"\
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\tSELECT [DISTINCT [ON attrN]] expr1 [AS attr1], ...exprN\n\
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\t[INTO [TABLE] class_name]\n\
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\t[FROM from_list]\n\
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\t[WHERE qual]\n\
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\t[GROUP BY group_list]\n\
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\t[HAVING having_clause]\n\
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\t[ORDER BY attr1 [ASC|DESC] [USING op1], ...attrN ]\n\
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\t[UNION [ALL] SELECT ...];"},
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{"set",
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"set run-time environment",
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#ifdef MULTIBYTE
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"\
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\tSET DateStyle TO 'ISO'|'SQL'|'Postgres'|'European'|'US'|'NonEuropean'\n\
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set GEQO TO 'ON[=#]'|'OFF'\n\
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set R_PLANS TO 'ON'|'OFF'\n\
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set CLIENT_ENCODING TO 'EUC_JP'|'SJIS'|'EUC_CN'|'EUC_KR'|'EUC_TW'|'MULE_INTERNAL'|'LATIN1'|'LATIN2'|'LATIN3'|'LATIN4'|'LATIN5'"},
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#else
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"\
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\tSET DateStyle TO 'ISO'|'SQL'|'Postgres'|'European'|'US'|'NonEuropean'\n\
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set GEQO TO 'ON[=#]'|'OFF'\n\
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set R_PLANS TO 'ON'| 'OFF'"},
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#endif
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{"show",
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"show current run-time environment",
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#ifdef MULTIBYTE
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"\
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\tSHOW DateStyle|GEQO|R_PLANS|CLIENT_ENCODING"},
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#else
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"\
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\tSHOW DateStyle|GEQO|R_PLANS"},
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#endif
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{"unlisten",
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"unlisten for notification on a relation name",
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"\
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\tUNLISTEN class_name|\"name\"|\"*\""},
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{"update",
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"update tuples",
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"\
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\tUPDATE class_name SET attr1 = expr1, ...attrN = exprN\n\
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\t [FROM from_clause]\n\
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\t[WHERE qual];"},
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{"vacuum",
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"vacuum the database, i.e. cleans out deleted records, updates statistics",
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"\
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\tVACUUM [VERBOSE] [ANALYZE] [table]\n\
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\tor\n\
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\tVACUUM [VERBOSE] ANALYZE [table [(attr1, ...attrN)]];"},
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{NULL, NULL, NULL} /* important to keep a NULL terminator
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* here! */
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};
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