Practical PL/SQL

Pl/Sql

  • Dynamic Unpivot Using JSON_DATAGUIDE

    In this post I will explore a way to generate and run unpivot queries dynamically in PL/SQL. We will build a utility package to dynamically create unpivot queries using json and leveraging json_dataguide to create json_table and unpivot sql expressions. read more

  • Table Data Comparison: Row Differences

    A common task that database developers encounter is comparing data between two different sources to see rows with differences. This can be a table that is loaded with new data that needs to be compared with existing rows to see what rows… read more

  • Cursor Basics: Cursor Iteration Controls

    In the previous post we discussed the use of bulk collect and limit to optimize cursor iteration. This gave us a way to see the undocumented bulk prefetch optimization that has been applied behind the scenes to the cursor for loop. Unless… read more

  • Cursor Basics: Bulk Binds

    In the previous post we discussed the most basic approaches to iterating through a resultset using cursors. Since those approaches traverse the cursor one row at a time they are often referred to as slow by slow processing. This slowness turns out… read more

  • Cursor Basics: A Fetching Difference

    There are some techniques that are really basic to what we do everyday as PL/SQL developers. There is a tendency to automatically do these basic things in the same way without considering the alternatives that the particular situation might merit. In this… read more

  • Writing Excellent Code

    Once you have started to absorb the fact that there are many ways to accomplish a given programming task, you should find yourself asking questions like the following. What is the best way to do this? Are there rules and standards for… read more

Recent
Categories
Archives
Topics

AI (3) AI Vector Search (7) artificial-intelligence (3) Best Practices (2) Binary Vectors (1) Binary Vector Searches (1) Ceil (1) Comparing Table Data (1) Cursor For Loop (2) Cursors (3) Cursor Variables (2) data-science (1) Database Compatible Parameter (1) Dynamic SQL (2) IDE (1) Inline CTE Functions (2) LLM (3) machine-learning (1) OCI Autonomous Database (1) OML4PY 2.1 (1) ONNX (2) Oracle 19c (3) Oracle 21c (4) Oracle 23ai (12) Oracle AI Database 26.1 (4) Oracle Database 23.7 (2) Polymorhic Table Functions (1) pragma UDF (1) Ref Cursors (2) Reranking Similarity Searches (1) Round (1) Sparse Vector Storage Format (1) Sql Assertions (4) Sql Macros (6) Sql Transpiler (1) technology (3) Trunc (1) vector (1) Vector Arithmetic (2) Vector Data Type (2) Vector Math (2) Vector Similarity (1)