oracle cursor size

1. What is a cursor?① Retrieve the result set from the table and point to a record for interaction at a time.② Operations in relational databases are performed on the complete set of rows.The row set returned by the SELECT statement includes all

There are two types of cursors in Oracle: an explicit cursor, an implicit cursor. A display cursor is a cursor defined with the cursor...is command that handles multiple records returned by a query statement (SELECT), while an implicit cursor is a

1, what is a cursor? ① retrieves the result set from the table, and the mechanism from which each point points to a record for interaction.The operations in the ② relational database are performed on the complete rowset.The rowset returned by the

1, what is a cursor.① retrieves a result set from a table from which the mechanism for interacting with each record is pointed.Operations in the ② relational database are performed on a complete rowset.The rowset returned by the SELECT statement

SQL is the language used to access the Oracle database. PL/SQL expands and enhances SQL functions. It also introduces stronger Program Logic. PL/SQL supports DML commands and SQL transaction control statements. DDL is not supported in PL/SQL, which

SQL is the language used to access the Oracle database. PL/SQL expands and enhances SQL functions. It also introduces stronger Program Logic. PL/SQL supports DML commands and SQL transaction control statements. DDL is not supported in PL/SQL, which

Problems encountered at work: 1. There is a custom dictionary table: mdl_class_js This table stores the names of many other tables (called resource tables). (In the mdl_class_js table, fields: table_name are used to represent these resource

1. What is a cursor?① Retrieve the result set from the table and point to a record for interaction at a time.② Operations in relational databases are performed on the complete set of rows.The row set returned by the SELECT statement includes all

Oracle Series: Cursor 1, what is a cursor.① retrieves a result set from a table from which the mechanism for interacting with each record is pointed.Operations in the ② relational database are performed on a complete rowset.The rowset returned by

1. What is a cursor? ① Retrieve the result set from the table and point to a record for interaction at a time. ② Operations in relational databases are performed on the complete set of rows. The row set returned by the SELECT statement includes all