PL/SQL provides two ways to write dynamic SQL: Native dynamic SQL, a PL/SQL language (that is, native) feature for building and running dynamic SQL statements. DBMS_SQL package, an API for building, running, and describing dynamic SQL statements

Jul 24, 2017 · I want to do something like this: sql_str := 'select '; if (user_input = 1) then sql_str := sql_str || 'a.col1 from tb1 a'; else sql_str := sql_str || 'a.col1, b.col2, b.col3 from tb1 ...

Dynamic SQL is a powerful feature of Oracle PL/SQL that allows the creation and execution of SQL statements at runtime. It is particularly useful when dealing with dynamic queries or when the SQL statement to be executed is not known at compile time.

PL/SQL provides two ways to write dynamic SQL: Native dynamic SQL, a PL/SQL language (that is, native) feature for building and running dynamic SQL statements. DBMS_SQL package, an API for building, running, and describing dynamic SQL statements

Nov 21, 2024 · PL/SQL provides two ways to write dynamic SQL. What is Dynamic SQL? Native Dynamic SQL is the easier way to write dynamic SQL. It uses the ‘EXECUTE IMMEDIATE’ command to create and execute the SQL at run-time. But to use this way, the datatype and number of variable that to be used at a run time need to be known before.

Oracle provides two methods for using dynamic SQL within PL/SQL: native dynamic SQL and the DBMS_SQL package. Native dynamic SQL lets you place dynamic SQL statements directly into PL/SQL code.

One workaround is use REFCURSOR By forming a query string dynamically. VAR1 VARCHAR2(500); CUR1 SYs_REFCURSOR; QUERY_STRING VARCHAR2(2000) := 'SELECT T.COL1 FROM TABLE1 T WHERE T.COL1 IN'; MYREC IS RECORD . COL1 VARCHAR(1000); ); myrecord MYREC; BEGIN. VAR1 := q'['V1','V2']'; QUERY_STRING:= QUERY_STRING||'('||VAR1||')'; OPEN CUR1 FOR QUERy_STRING;

Today, we’re exploring a powerful technique in Oracle’s PL/SQL that allows us to create and run SQL statements on the fly. This method, known as dynamic SQL, opens up new possibilities in how we interact with databases.

The dynamic PL/SQL method actually generates 3 bind variables: 2 for the PL/SQL block (although neither is captured in V$SQL_BIND_CAPTURE), and 1 for the SQL query. Quirks like that can make tuning and debugging very difficult.

This chapter shows you how to use native dynamic SQL (dynamic SQL for short), a PL/SQL interface that makes your applications more flexible and versatile. You learn simple ways to write programs that can build and process SQL statements "on the fly" at run time.