Command:CREATEPROCEDURE Description:defineanewprocedure Syntax: CREATE[ORREPLACE]PROCEDURE name([[argmode][argname]argtype[{DEFAULT|=}default_expr][,...]]) {LANGUAGElang_name |TRANSFORM{FORTYPEtype_name}[,...] |[EXTERNAL]SECURITYINVOKER|[EXTERNAL]SECURITYDEFINER ...
postgres=# \help SELECT Command: SELECT Description: retrieve rows from a table or view Syntax: [ WITH [ RECURSIVE ] with_query [, ...] ] SELECT [ ALL | DISTINCT [ ON ( expression [, ...] ) ] ] [ * | expression [ [ AS ] output_name ] [, ...] ] [ FROM from_item [,...
postgres=# \help SELECT Command: SELECT Description: retrieve rows from a table or view Syntax: [ WITH [ RECURSIVE ] with_query [, ...] ] SELECT [ ALL | DISTINCT [ ON ( expression [, ...] ) ] ] [ * | expression [ [ AS ] output_name ] [, ...] ] [ FROM from_item [,...
*/ if (strchr(cp1, '\\') != NULL) *cp2++ = ESCAPE_STRING_SYNTAX; *cp2++ = '\''; while (*cp1) { if (SQL_STR_DOUBLE(*cp1, true)) *cp2++ = *cp1; *cp2++ = *cp1++; } strcpy(cp2, "'::pg_catalog.refcursor"); curname_def->query = pstrdup(buf); curname_def->...
postgres=# \helpSELECTCommand:SELECTDescription:retrieve rows from a table or viewSyntax:[WITH[RECURSIVE]with_query[,...]]SELECT[ALL|DISTINCT[ON(expression[,...])]][*|expression[[AS]output_name][,...]][FROMfrom_item[,...]][WHEREcondition][GROUPBYgrouping_element[,...]][HAVINGcondition...
CREATE CONSTRAINT定义一个新的约束触发器。CREATE CONSTRAINT TRIGGER name AFTER events ON table_name constraint attributes FOR EACH ROW EXECUTE PROCEDURE func_name ( args ) SQL CopyCREATE CONVERSION定义一个新的转换。CREATE [DEFAULT] CONVERSION name FOR source_encoding TO dest_encoding FROM func_name...
Syntax: VACUUM [ ( option [, ...] ) ] [ table_and_columns [, ...] ] VACUUM [ FULL ] [ FREEZE ] [ VERBOSE ] [ ANALYZE ] [ table_and_columns [, ...] ] where option can be one of: FULL [ boolean ] FREEZE [ boolean ] VERBOSE [ boolean ] ANALYZE [ boolean ] DISABLE_PA...
PostgreSQL , CREATE PROCEDURE , CALL , 增强 , 11 背景 PostgreSQL一直以来都是通过create function来创建函数和存储过程(return void),通过select或者perform(plpgsql内部调用函数)来调用函数。 通过inline code来模拟类似procedure的用法: do language plpgsql $$ declare -- ... begin -- ... end; $$; ...
Command:CREATETRIGGERDescription:define anewtriggerSyntax:CREATE[CONSTRAINT]TRIGGERname{BEFORE|AFTER|INSTEADOF}{event[OR...]}ONtable_name[FROMreferenced_table_name]{NOTDEFERRABLE|[DEFERRABLE]{INITIALLYIMMEDIATE|INITIALLYDEFERRED}}[FOR[EACH]{ROW|STATEMENT}][WHEN(condition)]EXECUTEPROCEDUREfunction_name(argume...
CREATE TABLESPACE 定义一个新的表空间。 CREATE TABLESPACE tablespace_name [ OWNER username ] LOCATION 'directory' CREATE TRIGGER 定义一个新的触发器。 CREATE TRIGGER name { BEFORE | AFTER } { event [ OR ... ] } ON table [ FOR [ EACH ] { ROW | STATEMENT } ] EXECUTE PROCEDURE func_name...