Обсуждение: How to do auto numbering on INT column
HI I have a simple table created using PGAdmin III. How do i do a auto numbering on a column SYMBOL_ID? My table is CREATE TABLE "SYMBOL" ( "SYMBOL_ID" int4 NOT NULL, "SYMBOL2EXCHANGE" int2 NOT NULL, "SYMBOL_ALIAS" text[], "RELATED_SYMBOLS_OTHER_EXCHANGES" int8[], "SYMBOL_NAME" text, "COMPANY_NAME" text, "SYMBOL2SECTOR" int2, "SYMBOL2INDUSTRY" int4, "STOCK_SUMMARY" text ) Thanks Seede
> HI > I have a simple table created using PGAdmin III. How do i do a auto > numbering on a column SYMBOL_ID? > My table is > CREATE TABLE "SYMBOL" > ( > "SYMBOL_ID" int4 NOT NULL, > "SYMBOL2EXCHANGE" int2 NOT NULL, > "SYMBOL_ALIAS" text[], > "RELATED_SYMBOLS_OTHER_EXCHANGES" int8[], > "SYMBOL_NAME" text, > "COMPANY_NAME" text, > "SYMBOL2SECTOR" int2, > "SYMBOL2INDUSTRY" int4, > "STOCK_SUMMARY" text > ) Use column type SERIAL, or, if you want to fine tune things, use sequences: http://www.postgresql.org/docs/8.1/static/sql-createsequence.html (in fact, SERIAL does define a sequence behind the scenes for you). Bye, Chris. -- Chris Mair http://www.1006.org
Junkone wrote: > CREATE TABLE "SYMBOL" > ( > "SYMBOL_ID" int4 NOT NULL, > "SYMBOL2EXCHANGE" int2 NOT NULL, > "SYMBOL_ALIAS" text[], > "RELATED_SYMBOLS_OTHER_EXCHANGES" int8[], > "SYMBOL_NAME" text, > "COMPANY_NAME" text, > "SYMBOL2SECTOR" int2, > "SYMBOL2INDUSTRY" int4, > "STOCK_SUMMARY" text > ) I think you'll want to remove all those double-quotes. They make your table and column names case sensitive. You'd need to quote these in your queries as well, if you stay with what pgadmin (apparently) created. -- Alban Hertroys alban@magproductions.nl magproductions b.v. T: ++31(0)534346874 F: ++31(0)534346876 M: I: www.magproductions.nl A: Postbus 416 7500 AK Enschede // Integrate Your World //
Junkone wrote: > HI > I have a simple table created using PGAdmin III. How do i do a auto > numbering on a column SYMBOL_ID? > My table is > CREATE TABLE "SYMBOL" > ( > "SYMBOL_ID" int4 NOT NULL, > "SYMBOL2EXCHANGE" int2 NOT NULL, > "SYMBOL_ALIAS" text[], > "RELATED_SYMBOLS_OTHER_EXCHANGES" int8[], > "SYMBOL_NAME" text, > "COMPANY_NAME" text, > "SYMBOL2SECTOR" int2, > "SYMBOL2INDUSTRY" int4, > "STOCK_SUMMARY" text > ) > If you can, the easy way is to recreate the table using a serial datatype instead of int4. See the docs at http://www.postgresql.org/docs/8.1/interactive/datatype.html#DATATYPE-SERIAL Otherwise this also shows the long way to do it. HTH, Brent Wood