Oracle to Sybase ASE Migration Guide

ORACLE TO SYBASE ASE MIGRATION GUIDERev.1.3OracleDeclarations without DECLARE keyword in declarationsection of stored procedures/functionsCREATE PROCEDURE pASV1 NUMBER(10,0);V2 CHAR(20);CURSOR mycursor ISSELECT * FROM mytable;BEGIN…statements…END;Variable assignmentmyvar := expression;Transferring table data into a variableSELECT my_col INTO my_variableFROM my_table WHERE id = 123;Constants%TYPE denotes the datatype of a column in an existingtableSybase ASE ("simple conversion")DECLARE keyword is required in Sybase ASE.Cursors must be declared separately withDECLARE…CURSORCREATE PROCEDURE pASBEGINDECLARE@v1 int,@v2 char(20)DECLARE mycurs CURSOR ASSELECT * FROM mytable…statements…ENDgoSET @myvar = expressionSELECT @myvar = expressionDirectly select into the variableSELECT @my_variable = my_col FROMmy_table WHERE id = 123Redefine as variables and check scope of usage (localor global).Explicitly declare the variable with the column's actualdatatypeDECLARE count my_table.id%TYPEDynamic SQLEXECUTE IMMEDIATE '…sql…';Optional clauses:EXECUTE IMMEDIATE '…sql…' USING …;EXECUTE IMMEDIATE '…sql…' INTO …;EXECUTE IMMEDIATE '…sql…' BULK COLLECTINTO …;Use Sybase ASE execute-immediateSET @cmd = '…sql…'EXECUTE (@cmd)or:EXECUTE ('…sql…')With the clauses USING (specifies parameters to thedynamic SQL), INTO (puts results into variables forsingle-row results), BULK COLLECT INTO (storesresults into Oracle collections), the query should berewritten to achieve the same effect in ASE.Oracle-to-Sybase Migration Cross-Reference 48