Types of Cursors There are 2 types of Cursors used in PL/SQL programming: 1. Implicit Cursors As the name indicates, Implicit cursors are those cursors that are automatically created by Oracle when any DML statements like INSERT, DELETE, UPDATE are executed. When the programmer does not create...
Generally, there are two types of SQL that you can execute in PL/SQL. There are two types of cursors in PL/SQL: Implicit Cursors When you execute DML statements like Delete, Insert, Update and Select statements, implicit statements are created to process these statements. Oracle provides few...
Oracle lets you implement object methods in PL/SQL, Java or C. You can implement type methods in Java or C by providing a call specification in your type. A call spec publishes a Java method or external C function in the Oracle data dictionary. It publishes the routine by mapping its na...
There are 2 types of table columns to store bit strings: BIT and BIT VARYING. "BIT(length)" - Bit string with fixed length counted in bits. "BIT VARYING(length)" - Bit string with varying length counted in bits. BIT VARYING is not supported by MySQL yet. Examples of B string column...
PL/SQL and Oracle Call Interface (OCI) queries for object types There are no limitations on the size of the object types for parallel queries. The following restrictions apply to using parallel query for object types: A MAP function is needed to execute queries in parallel for queries involvi...
A constraint can contain a single column or a group of columns in a table. Oracle allows you to apply the constraints on a single or multiple columns that will enforce data integrity on your table. There are two ways to impose the constraints: ...
Running JsonColumns.sql on MySQL 8.0 server gives you: herong> %mysql%\bin\mysql --user=root --password=TopSecret test \ < JsonColumns.sql Line J T 1 [99, {"id": "HK500", "cost": 75.99}, ["hot", "cold"]] [99, {"id": "HK500", "cost": 75.99}, ["hot", "cold"]] ...
“Unable to enlist in the transaction” with Oracle linked server from MS SQL Server [<Name of Missing Index, sysname,>] in non clustered index [Execute SQL Task] Error: The value type (__ComObject) can only be converted to variables of type Object. [ODBC Driver Manager] Data source nam...
How to create custom cursors in visual basic 2010? how to create exe file in visual studio 2010 basic How to create high and rich dash board screens using vb.net controls?? How to create Indexed controls in vb.net How to create login form in v.b net using sql local database(.mdf) ...
1 type of table column to store JSON documents: JSON. 8 types of table column to store Spatial Geometry Data: GEOMETRY, POINT, LINESTRING, POLYGON, MULTIPOINT, MULTILINESTRING, MULTIPOLYGON, GEOMETRYCOLLECTION, GEOMETRYCOLLECTION. All notes and examples in chapter are tested with MySQL 8.0, 5....