pl sql to number

PL/SQL cursor usage Use of cursors ① Cursor ConceptTo process SQL statements, Oracle must allocate a region called context area to process required information,This includes the number of rows to be processed, a pointer to the expression after the statement is analyzed, and the queried active set ).A cursor is a handle

Basic PL/SQL entry cursor PL/SQL: a programming Language combined with a Structured Language (Structured Query Language). It is an extension of SQL and supports multiple data types, such as large objects and Collection types, you can use control statements such as conditions

variable, or function2.1. Examples of scalar definitionsDefines a variable-length stringV_name VARCHAR2 (10);Defines a decimal range -9999.99~9999.99V_sal Number (6,2)Define a decimal and give the initial value 6.6 Note:: = is a variable assignment number for PL/SQLV_num Number (6.2): =6.6Define data for a date typeV_

PL/SQL script language value assignment statement syntax table and record comply with the type usage, select the statement if else usage anonymous block (1), assign value statement syntax PL/SQL values use: = "=" some rules need to be observed in the comparison operator value assignment statement: the character type mu

into v_salFrom employeesWhere employee_id = 100;If v_sal> 1000 thenRaise too_high_sal;End if;Delete from employeesWhere employee_id = 100; Dbms_output.put_line (v_sal ); ExceptionWhen Too_many_rows then dbms_output.put_line ('Too many output rows ');When delete_mgr_excep then dbms_output.put_line ('manager cannot be deleted directly ');-- Handle exceptionsWhen too_high_sal then dbms_output.put_line ('overpay ');End; ⑥ Use SQLCODE and SQLERRM in PL/

modified: ' | | Sql%rowcount);END if;DELETE from EMP;If Sql%found ThenDbms_output.put_line (' Number of rows deleted: ' | | Sql%rowcount);END if;INSERT into Dept VALUES (+, ' aaa ', ' aaaa ');INSERT into Dept VALUES (+, ' BBB ', ' bbbb ');If Sql%found ThenDbms_output.put_li

The DBMS_HPROF package is an oracle11g tool. It is a combination of DBMS_PROFILER and DBMS_TRACE. Here is a simple demonstration of how to use the DBMS_HPROF package to analyze the stored procedure information. The DBMS_HPROF package is a tool that appears in oracle 11 GB. It is a combination of DBMS_PROFILER and DBMS_TRACE. Here is a simple demonstration of how to use the DBMS_HPROF package to analyze the stored procedure information. The DBMS_HPROF package is a tool for Oracle 11 GB and i

PL/SQL cursor usage, plsql cursor usageZookeeper Use of cursors ① Cursor ConceptTo process SQL statements, ORACLE must allocate a region called context area to process required information,This includes the number of rows to be processed, a pointer to the expression after the statement is analyzed, and the queried acti

what is PL/SQL? PL/SQL (procedural language/sql) is an extension of Oracle's on-the-loop, which allows you to define constants and variables, allows you to use conditional and circular statements, and allows you to use exceptions to handle various errors. This makes it a ver

Label:After installing Oracle (64-bit), PL/SQL developer, execute PL/SQL occurs for example the following error:On the Internet, my PL/SQL developer is incompatible with Oracle, that is, PL