Re: [GENERAL] postgres 8.3 beta 2 storage question
2007/11/27, SHARMILA JOTHIRAJAH [EMAIL PROTECTED]: 1.How does postgres version 8.3 betat 2 handle varchar and numeric data types in terms of storage I understand for varchar it has 1byte overhead (instead of 4) if length128 How does it handle for numeric? The manual says The actual storage requirement is two bytes for each group of four decimal digits, plus five to eight bytes overhead. which manual? ( not these two: ) http://www.postgresql.org/docs/8.1/static/datatype.html#DATATYPE-NUMERIC-DECIMAL http://www.postgresql.org/docs/8.2/static/datatype-numeric.html#DATATYPE-NUMERIC-DECIMAL 2. Does postgres always inserts a complete record into a page unlike oracle whose record can span multiple pages? Does this waste space too? records larger than one page are TOASTed http://www.postgresql.org/docs/current/static/storage-page-layout.html -- Filip Rembiałkowski ---(end of broadcast)--- TIP 5: don't forget to increase your free space map settings
[GENERAL] postgres 8.3 beta 2 storage question
Hi, 1.How does postgres version 8.3 betat 2 handle varchar and numeric data types in terms of storage I understand for varchar it has 1byte overhead (instead of 4) if length128 How does it handle for numeric? The manual says The actual storage requirement is two bytes for each group of four decimal digits, plus five to eight bytes overhead. I dont understand how the overhead is measured here?...5 to 8 bytes? 2. Does postgres always inserts a complete record into a page unlike oracle whose record can span multiple pages? Does this waste space too? Thanks sharmila Be a better sports nut! Let your teams follow you with Yahoo Mobile. Try it now. http://mobile.yahoo.com/sports;_ylt=At9_qDKvtAbMuh1G1SQtBI7ntAcJ
Re: [GENERAL] postgres 8.3 beta 2 storage question
1.How does postgres version 8.3 betat 2 handle varchar and numeric data types in terms of storage I understand for varchar it has 1byte overhead (instead of 4) if length128 How does it handle for numeric? The manual says The actual storage requirement is two bytes for each group of four decimal digits, plus five to eight bytes overhead. which manual? ( not these two: ) http://www.postgresql.org/docs/8.1/static/datatype.html#DATATYPE-NUMERIC-DECIMAL http://www.postgresql.org/docs/8.2/static/datatype-numeric.html#DATATYPE-NUMERIC-DECIMAL http://www.postgresql.org/docs/8.3/static/datatype-numeric.html 2. Does postgres always inserts a complete record into a page unlike oracle whose record can span multiple pages? Does this waste space too? records larger than one page are TOASTed http://www.postgresql.org/docs/current/static/storage-page-layout.html Thanks sharmila Be a better sports nut! Let your teams follow you with Yahoo Mobile. Try it now. http://mobile.yahoo.com/sports;_ylt=At9_qDKvtAbMuh1G1SQtBI7ntAcJ
