Allow SQL:2008 syntax ALTER TABLE ... ALTER COLUMN ... SET DATA TYPE
alongside our traditional syntax.
This commit is contained in:
Peter Eisentraut
parent
089ae3bc9a
commit
1471e3843d
@ -1,5 +1,5 @@
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<!--
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$PostgreSQL: pgsql/doc/src/sgml/ref/alter_table.sgml,v 1.99 2008/05/09 23:32:03 tgl Exp $
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$PostgreSQL: pgsql/doc/src/sgml/ref/alter_table.sgml,v 1.100 2008/10/21 08:38:15 petere Exp $
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PostgreSQL documentation
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-->
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@ -33,7 +33,7 @@ where <replaceable class="PARAMETER">action</replaceable> is one of:
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ADD [ COLUMN ] <replaceable class="PARAMETER">column</replaceable> <replaceable class="PARAMETER">type</replaceable> [ <replaceable class="PARAMETER">column_constraint</replaceable> [ ... ] ]
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DROP [ COLUMN ] <replaceable class="PARAMETER">column</replaceable> [ RESTRICT | CASCADE ]
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ALTER [ COLUMN ] <replaceable class="PARAMETER">column</replaceable> TYPE <replaceable class="PARAMETER">type</replaceable> [ USING <replaceable class="PARAMETER">expression</replaceable> ]
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ALTER [ COLUMN ] <replaceable class="PARAMETER">column</replaceable> [ SET DATA ] TYPE <replaceable class="PARAMETER">type</replaceable> [ USING <replaceable class="PARAMETER">expression</replaceable> ]
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ALTER [ COLUMN ] <replaceable class="PARAMETER">column</replaceable> SET DEFAULT <replaceable class="PARAMETER">expression</replaceable>
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ALTER [ COLUMN ] <replaceable class="PARAMETER">column</replaceable> DROP DEFAULT
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ALTER [ COLUMN ] <replaceable class="PARAMETER">column</replaceable> { SET | DROP } NOT NULL
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@ -93,7 +93,7 @@ where <replaceable class="PARAMETER">action</replaceable> is one of:
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</varlistentry>
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<varlistentry>
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<term><literal>ALTER COLUMN TYPE</literal></term>
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<term><literal>SET DATA TYPE</literal></term>
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<listitem>
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<para>
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This form changes the type of a column of a table. Indexes and
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@ -760,7 +760,7 @@ ALTER TABLE distributors
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with time zone</type> via a <literal>USING</literal> clause:
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<programlisting>
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ALTER TABLE foo
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ALTER COLUMN foo_timestamp TYPE timestamp with time zone
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ALTER COLUMN foo_timestamp SET DATA TYPE timestamp with time zone
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USING
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timestamp with time zone 'epoch' + foo_timestamp * interval '1 second';
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</programlisting>
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@ -868,8 +868,9 @@ ALTER TABLE myschema.distributors SET SCHEMA yourschema;
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<title>Compatibility</title>
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<para>
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The <literal>ADD</literal>, <literal>DROP</>, and <literal>SET DEFAULT</>
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forms conform with the SQL standard. The other forms are
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The forms <literal>ADD</literal>, <literal>DROP</>, <literal>SET DEFAULT</>,
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and <literal>SET DATA TYPE</literal> (without <literal>USING</literal>)
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conform with the SQL standard. The other forms are
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<productname>PostgreSQL</productname> extensions of the SQL standard.
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Also, the ability to specify more than one manipulation in a single
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<command>ALTER TABLE</> command is an extension.
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@ -236,7 +236,7 @@ F381 Extended schema manipulation YES
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F381 Extended schema manipulation 01 ALTER TABLE statement: ALTER COLUMN clause YES
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F381 Extended schema manipulation 02 ALTER TABLE statement: ADD CONSTRAINT clause YES
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F381 Extended schema manipulation 03 ALTER TABLE statement: DROP CONSTRAINT clause YES
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F382 Alter column data type NO PostgreSQL syntax differs
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F382 Alter column data type YES
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F391 Long identifiers YES
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F392 Unicode escapes in identifiers NO
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F393 Unicode escapes in literals NO
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@ -11,7 +11,7 @@
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*
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*
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* IDENTIFICATION
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* $PostgreSQL: pgsql/src/backend/parser/gram.y,v 2.626 2008/10/20 14:26:28 petere Exp $
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* $PostgreSQL: pgsql/src/backend/parser/gram.y,v 2.627 2008/10/21 08:38:15 petere Exp $
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*
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* HISTORY
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* AUTHOR DATE MAJOR EVENT
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@ -304,7 +304,7 @@ static TypeName *TableFuncTypeName(List *columns);
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%type <boolean> copy_from
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%type <ival> opt_column event cursor_options opt_hold
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%type <ival> opt_column event cursor_options opt_hold opt_set_data
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%type <objtype> reindex_type drop_type comment_type
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%type <node> fetch_direction select_limit_value select_offset_value
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@ -407,7 +407,7 @@ static TypeName *TableFuncTypeName(List *columns);
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CREATEROLE CREATEUSER CROSS CSV CTYPE CURRENT_P CURRENT_DATE CURRENT_ROLE
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CURRENT_TIME CURRENT_TIMESTAMP CURRENT_USER CURSOR CYCLE
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DATABASE DAY_P DEALLOCATE DEC DECIMAL_P DECLARE DEFAULT DEFAULTS
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DATA_P DATABASE DAY_P DEALLOCATE DEC DECIMAL_P DECLARE DEFAULT DEFAULTS
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DEFERRABLE DEFERRED DEFINER DELETE_P DELIMITER DELIMITERS DESC
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DICTIONARY DISABLE_P DISCARD DISTINCT DO DOCUMENT_P DOMAIN_P DOUBLE_P DROP
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@ -1534,16 +1534,16 @@ alter_table_cmd:
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$$ = (Node *)n;
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}
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/*
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* ALTER TABLE <name> ALTER [COLUMN] <colname> TYPE <typename>
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* ALTER TABLE <name> ALTER [COLUMN] <colname> [SET DATA] TYPE <typename>
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* [ USING <expression> ]
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*/
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| ALTER opt_column ColId TYPE_P Typename alter_using
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| ALTER opt_column ColId opt_set_data TYPE_P Typename alter_using
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{
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AlterTableCmd *n = makeNode(AlterTableCmd);
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n->subtype = AT_AlterColumnType;
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n->name = $3;
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n->def = (Node *) $5;
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n->transform = $6;
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n->def = (Node *) $6;
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n->transform = $7;
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$$ = (Node *)n;
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}
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/* ALTER TABLE <name> ADD CONSTRAINT ... */
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@ -4854,6 +4854,10 @@ opt_column: COLUMN { $$ = COLUMN; }
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| /*EMPTY*/ { $$ = 0; }
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;
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opt_set_data: SET DATA_P { $$ = 1; }
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| /*EMPTY*/ { $$ = 0; }
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;
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/*****************************************************************************
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*
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* ALTER THING name SET SCHEMA name
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@ -9317,6 +9321,7 @@ unreserved_keyword:
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| CURRENT_P
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| CURSOR
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| CYCLE
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| DATA_P
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| DATABASE
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| DAY_P
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| DEALLOCATE
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@ -11,7 +11,7 @@
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*
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*
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* IDENTIFICATION
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* $PostgreSQL: pgsql/src/backend/parser/keywords.c,v 1.202 2008/10/04 21:56:54 tgl Exp $
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* $PostgreSQL: pgsql/src/backend/parser/keywords.c,v 1.203 2008/10/21 08:38:15 petere Exp $
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*
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*-------------------------------------------------------------------------
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*/
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@ -123,6 +123,7 @@ const ScanKeyword ScanKeywords[] = {
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{"current_user", CURRENT_USER, RESERVED_KEYWORD},
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{"cursor", CURSOR, UNRESERVED_KEYWORD},
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{"cycle", CYCLE, UNRESERVED_KEYWORD},
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{"data", DATA_P, UNRESERVED_KEYWORD},
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{"database", DATABASE, UNRESERVED_KEYWORD},
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{"day", DAY_P, UNRESERVED_KEYWORD},
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{"deallocate", DEALLOCATE, UNRESERVED_KEYWORD},
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@ -4,7 +4,7 @@
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* lexical token lookup for reserved words in postgres embedded SQL
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*
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* IDENTIFICATION
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* $PostgreSQL: pgsql/src/interfaces/ecpg/preproc/ecpg_keywords.c,v 1.38 2008/05/20 23:17:32 meskes Exp $
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* $PostgreSQL: pgsql/src/interfaces/ecpg/preproc/ecpg_keywords.c,v 1.39 2008/10/21 08:38:16 petere Exp $
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*
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*-------------------------------------------------------------------------
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*/
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@ -34,7 +34,6 @@ static const ScanKeyword ScanECPGKeywords[] = {
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{"cardinality", SQL_CARDINALITY, 0},
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{"connect", SQL_CONNECT, 0},
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{"count", SQL_COUNT, 0},
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{"data", SQL_DATA, 0},
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{"datetime_interval_code", SQL_DATETIME_INTERVAL_CODE, 0},
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{"datetime_interval_precision", SQL_DATETIME_INTERVAL_PRECISION, 0},
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{"describe", SQL_DESCRIBE, 0},
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@ -1,4 +1,4 @@
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/* $PostgreSQL: pgsql/src/interfaces/ecpg/preproc/preproc.y,v 1.376 2008/10/14 09:31:04 meskes Exp $ */
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/* $PostgreSQL: pgsql/src/interfaces/ecpg/preproc/preproc.y,v 1.377 2008/10/21 08:38:16 petere Exp $ */
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/* Copyright comment */
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%{
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@ -392,7 +392,7 @@ add_typedef(char *name, char * dimension, char * length, enum ECPGttype type_enu
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/* special embedded SQL token */
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%token SQL_ALLOCATE SQL_AUTOCOMMIT SQL_BOOL SQL_BREAK
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SQL_CALL SQL_CARDINALITY SQL_CONNECT
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SQL_COUNT SQL_DATA
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SQL_COUNT
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SQL_DATETIME_INTERVAL_CODE
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SQL_DATETIME_INTERVAL_PRECISION SQL_DESCRIBE
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SQL_DESCRIPTOR SQL_DISCONNECT SQL_FOUND
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@ -431,7 +431,7 @@ add_typedef(char *name, char * dimension, char * length, enum ECPGttype type_enu
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CREATEROLE CREATEUSER CROSS CSV CTYPE CURRENT_P CURRENT_DATE CURRENT_ROLE
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CURRENT_TIME CURRENT_TIMESTAMP CURRENT_USER CURSOR CYCLE
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DATABASE DAY_P DEALLOCATE DEC DECIMAL_P DECLARE DEFAULT DEFAULTS
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DATA_P DATABASE DAY_P DEALLOCATE DEC DECIMAL_P DECLARE DEFAULT DEFAULTS
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DEFERRABLE DEFERRED DEFINER DELETE_P DELIMITER DELIMITERS DESC
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DICTIONARY DISABLE_P DISCARD DISTINCT DO DOCUMENT_P DOMAIN_P DOUBLE_P DROP
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@ -584,7 +584,7 @@ add_typedef(char *name, char * dimension, char * length, enum ECPGttype type_enu
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%type <str> def_elem def_list definition DefineStmt select_with_parens
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%type <str> opt_instead event RuleActionList opt_using CreateAssertStmt
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%type <str> RuleActionStmtOrEmpty RuleActionMulti func_as reindex_type
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%type <str> RuleStmt opt_column oper_argtypes NumConst var_name
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%type <str> RuleStmt opt_column opt_set_data oper_argtypes NumConst var_name
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%type <str> MathOp RemoveFuncStmt ECPGunreserved_con opt_database_name
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%type <str> RemoveAggrStmt opt_procedural select_no_parens CreateCastStmt
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%type <str> RemoveOperStmt RenameStmt all_Op opt_trusted opt_lancompiler
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@ -1398,9 +1398,9 @@ alter_table_cmd:
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/* ALTER TABLE <name> DROP [COLUMN] <colname> {RESTRICT|CASCADE} */
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| DROP opt_column ColId opt_drop_behavior
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{ $$ = cat_str(4, make_str("drop"), $2, $3, $4); }
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/* ALTER TABLE <name> ALTER [COLUMN] <colname> TYPE <typename> [ USING <expression> ] */
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| ALTER opt_column ColId TYPE_P Typename alter_using
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{ $$ = cat_str(6, make_str("alter"), $2, $3, make_str("type"), $5, $6); }
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/* ALTER TABLE <name> ALTER [COLUMN] <colname> [SET DATA] TYPE <typename> [ USING <expression> ] */
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| ALTER opt_column ColId opt_set_data TYPE_P Typename alter_using
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{ $$ = cat_str(7, make_str("alter"), $2, $3, $4, make_str("type"), $6, $7); }
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/* ALTER TABLE <name> ADD CONSTRAINT ... */
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| ADD_P TableConstraint
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{ $$ = cat_str(2, make_str("add"), $2); }
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@ -2891,6 +2891,10 @@ opt_column: COLUMN { $$ = make_str("column"); }
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| /*EMPTY*/ { $$ = EMPTY; }
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;
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opt_set_data: SET DATA_P { $$ = make_str("set data"); }
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| /*EMPTY*/ { $$ = EMPTY; }
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;
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/*****************************************************************************
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*
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* ALTER THING name SET SCHEMA name
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@ -6140,7 +6144,7 @@ ECPGSetDescItem: descriptor_item '=' AllConstVar
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descriptor_item: SQL_CARDINALITY { $$ = ECPGd_cardinality; }
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| SQL_DATA { $$ = ECPGd_data; }
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| DATA_P { $$ = ECPGd_data; }
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| SQL_DATETIME_INTERVAL_CODE { $$ = ECPGd_di_code; }
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| SQL_DATETIME_INTERVAL_PRECISION { $$ = ECPGd_di_precision; }
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| SQL_INDICATOR { $$ = ECPGd_indicator; }
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@ -6360,7 +6364,6 @@ ECPGKeywords_vanames: SQL_BREAK { $$ = make_str("break"); }
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| SQL_CALL { $$ = make_str("call"); }
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| SQL_CARDINALITY { $$ = make_str("cardinality"); }
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| SQL_COUNT { $$ = make_str("count"); }
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| SQL_DATA { $$ = make_str("data"); }
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| SQL_DATETIME_INTERVAL_CODE { $$ = make_str("datetime_interval_code"); }
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| SQL_DATETIME_INTERVAL_PRECISION { $$ = make_str("datetime_interval_precision"); }
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| SQL_FOUND { $$ = make_str("found"); }
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@ -6557,6 +6560,7 @@ ECPGunreserved_con: ABORT_P { $$ = make_str("abort"); }
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| CTYPE { $$ = make_str("ctype"); }
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| CURSOR { $$ = make_str("cursor"); }
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| CYCLE { $$ = make_str("cycle"); }
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| DATA_P { $$ = make_str("data"); }
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| DATABASE { $$ = make_str("database"); }
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/* | DAY_P { $$ = make_str("day"); }*/
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| DEALLOCATE { $$ = make_str("deallocate"); }
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@ -101,7 +101,7 @@ if (sqlca.sqlcode < 0) sqlprint();}
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for (i=0; i<3; i++)
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printf("item[%d] = %d\n", i, ind[i] ? -1 : item[i]);
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{ ECPGdo(__LINE__, 0, 1, NULL, 0, ECPGst_normal, "drop table T ", ECPGt_EOIT, ECPGt_EORT);
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{ ECPGdo(__LINE__, 0, 1, NULL, 0, ECPGst_normal, "alter table T alter Item1 type bigint ", ECPGt_EOIT, ECPGt_EORT);
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#line 31 "parser.pgc"
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if (sqlca.sqlwarn[0] == 'W') sqlprint();
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@ -110,15 +110,34 @@ if (sqlca.sqlwarn[0] == 'W') sqlprint();
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if (sqlca.sqlcode < 0) sqlprint();}
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#line 31 "parser.pgc"
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{ ECPGdo(__LINE__, 0, 1, NULL, 0, ECPGst_normal, "alter table T alter column Item2 set data type smallint ", ECPGt_EOIT, ECPGt_EORT);
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#line 32 "parser.pgc"
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if (sqlca.sqlwarn[0] == 'W') sqlprint();
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#line 32 "parser.pgc"
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if (sqlca.sqlcode < 0) sqlprint();}
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#line 32 "parser.pgc"
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{ ECPGdo(__LINE__, 0, 1, NULL, 0, ECPGst_normal, "drop table T ", ECPGt_EOIT, ECPGt_EORT);
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#line 34 "parser.pgc"
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if (sqlca.sqlwarn[0] == 'W') sqlprint();
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#line 34 "parser.pgc"
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if (sqlca.sqlcode < 0) sqlprint();}
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#line 34 "parser.pgc"
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{ ECPGdisconnect(__LINE__, "ALL");
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#line 33 "parser.pgc"
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#line 36 "parser.pgc"
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if (sqlca.sqlwarn[0] == 'W') sqlprint();
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#line 33 "parser.pgc"
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#line 36 "parser.pgc"
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if (sqlca.sqlcode < 0) sqlprint();}
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#line 33 "parser.pgc"
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#line 36 "parser.pgc"
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return 0;
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@ -40,11 +40,23 @@
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[NO_PID]: sqlca: code: 0, state: 00000
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[NO_PID]: ecpg_get_data on line 26: RESULT: offset: -1; array: yes
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[NO_PID]: sqlca: code: 0, state: 00000
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[NO_PID]: ecpg_execute on line 31: query: drop table T ; with 0 parameter(s) on connection regress1
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[NO_PID]: ecpg_execute on line 31: query: alter table T alter Item1 type bigint ; with 0 parameter(s) on connection regress1
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[NO_PID]: sqlca: code: 0, state: 00000
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[NO_PID]: ecpg_execute on line 31: using PQexec
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[NO_PID]: sqlca: code: 0, state: 00000
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[NO_PID]: ecpg_execute on line 31: OK: DROP TABLE
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[NO_PID]: ecpg_execute on line 31: OK: ALTER TABLE
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[NO_PID]: sqlca: code: 0, state: 00000
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[NO_PID]: ecpg_execute on line 32: query: alter table T alter column Item2 set data type smallint ; with 0 parameter(s) on connection regress1
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[NO_PID]: sqlca: code: 0, state: 00000
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[NO_PID]: ecpg_execute on line 32: using PQexec
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[NO_PID]: sqlca: code: 0, state: 00000
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[NO_PID]: ecpg_execute on line 32: OK: ALTER TABLE
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[NO_PID]: sqlca: code: 0, state: 00000
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[NO_PID]: ecpg_execute on line 34: query: drop table T ; with 0 parameter(s) on connection regress1
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[NO_PID]: sqlca: code: 0, state: 00000
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[NO_PID]: ecpg_execute on line 34: using PQexec
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[NO_PID]: sqlca: code: 0, state: 00000
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[NO_PID]: ecpg_execute on line 34: OK: DROP TABLE
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[NO_PID]: sqlca: code: 0, state: 00000
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[NO_PID]: ecpg_finish: connection regress1 closed
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[NO_PID]: sqlca: code: 0, state: 00000
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@ -28,6 +28,9 @@ int main(int argc, char* argv[]) {
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for (i=0; i<3; i++)
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printf("item[%d] = %d\n", i, ind[i] ? -1 : item[i]);
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EXEC SQL ALTER TABLE T ALTER Item1 TYPE bigint;
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EXEC SQL ALTER TABLE T ALTER COLUMN Item2 SET DATA TYPE smallint;
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EXEC SQL DROP TABLE T;
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EXEC SQL DISCONNECT ALL;
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