Summary: in this tutorial, you will learn how to use the PL/pgSQL select into statement to select data from the database and assign it to a variable. Introduction to PL/pgSQL Select Into statement The select into statement allows you to select data from the database and assign it to a...
Summary: in this tutorial, you will learn how to use the PL/SQL SELECT INTO statement to fetch data of a single row from a table into variables. PL/SQL SELECT INTO statement is the simplest and fastest way to fetch a single row from a table into variables. The following illustrates the...
In eitherenvironment, the PL/SQL engine accepts as input any valid PL/SQL unit. Theengine runs procedural statements, but sends SQL statements to the SQL enginein the database, as shown in Figure1-1. --PL/SQL 引擎接收任何有效的PL/SQL 单元,然后执行里面的过程语句,但是对于SQL...
用您的 PL/SQL 开发节省时间和金钱。 PL/SQL Developer is an IDE (Integrated Development Environment) that is specifically targeted at the development of stored program units for Oracle Databases. Over time more and more business logic and application logic has moved into the Oracle Server, so that...
1.2.2SELECT Statements that Reference Collections TheBULK COLLECT INTO clause can improve the performance of queries that reference collections. You can use BULK COLLECT INTO with tables of scalar values, or tables of %TYPE values. The PL/SQL block inExample 6-10queries multiple values into PL/...
考虑下面的SQL语句: -- 建表 create table t1(id int); -- 插入 insert into t1 values(1),(2),(3); -- 查询 select * from t1 where id = 1; 1. 2. 3. 4. 5. 6. 对于select语句,由于我们并没有为t1表创建索引,所以只能通过全表遍历的方式来执行查询。全表遍历会遍历表的所有块,逐条获取...
SQL> SELECT distinct type FROMALL_PLSQL_OBJECT_SETTINGS; TYPE --- PROCEDURE PACKAGE PACKAGE BODY TYPE BODY TRIGGER FUNCTION TYPE 7 rows selected. Table 1-2 PL/SQL Compilation Parameters --PL/SQL 相关的编译参数: Note: The compilerparameter PLSQL_DEBUG, which specifies whether to compile PL/...
You can now select multiple statements The complete statement text can now be expanded/collapsed Semi-colon added when recalling a single SQL statement Recall directory preference now accepts environment variables Connection enhancements For each connection you can now define an initialization script that ...
The SQL Window and Report Window now support multi-select substitution variables that allow you execute queries with set expressions: The selector can either display the actual values or a description of the values. The screenshot above shows the department names and includes the selected department...
select page_id, component_type_name, component_display_name, property_group_name, property_name from apex_used_db_object_comp_props where application_id = :app_id;You can also include the column CODE_FRAGMENT to show the object name, SQL or PL/SQL that was analyzed....