Question 1

Why do Teradata to Snowflake migrations get stuck on SQL syntax?

Accepted Answer

Teradata's BTEQ scripts, FastLoad jobs, and proprietary SQL extensions like QUALIFY have no direct Snowflake equivalent, so a literal syntax swap breaks. 3X Code Conversion parses these at the semantic level, in a recent run handling 180 BTEQ scripts and 66 FastLoad jobs alongside 612 SQL queries, and rebuilds the logic in Snowflake SQL and Snowpark rather than translating line by line.

Question 2

Why do Oracle to Snowflake migrations fail even when the data moves fine?

Accepted Answer

Moving the data itself is rarely the hard part. Most Oracle to Snowflake migrations run into trouble because business logic buried in PL/SQL packages, triggers, and stored procedures, some over a decade old, gets misread or dropped during conversion, not because the tables failed to copy over.

Question 3

Why is Netezza migration harder to staff than other platforms?

Accepted Answer

Netezza's NZPLSQL and appliance-specific architecture are old enough that fewer engineers have hands-on experience with them, and Snowflake requires a different skill set entirely, so teams often can't find people who know both sides well enough to migrate confidently.

Question 4

How do you validate data after a legacy code migration?

Accepted Answer

3X Code Conversion runs automated checks on row counts, column mappings, data types, null handling, and join logic on every converted object, and flags exactly where a result set doesn't match the original, rather than leaving validation as a manual, after the fact step.

Question 5

Which type of legacy code is hardest to convert automatically?

Accepted Answer

In a recent 1,247 object conversion run, views and functions converted fully automated at 96%, SQL scripts at 94%, stored procedures at 82%, ETL jobs at 79%, and BTEQ macros at 68%, the lowest of the group, since BTEQ's control flow and utilities carry the least direct equivalent on modern cloud platforms.

Question 6

Is it safe to migrate legacy SQL code without full documentation?

Accepted Answer

It's riskier without documentation, but not a blocker. 3X Code Conversion reads the code itself rather than relying on documentation, parsing 10 to 15 year old stored procedures and scripts to reconstruct what the logic does, which matters since undocumented legacy code is the norm on most estates, not the exception.

Question 7

Can converted stored procedures be tested before going into production?

Accepted Answer

Yes, and they should be. Every converted stored procedure needs its output checked against the original system, row for row, before it replaces the legacy version in production, since a procedure that runs without error can still return the wrong result silently.

Convert Legacy Code
to Modern Cloud
in Hours

How Does 3X Code Conversion Works

Sample Outputs

Convert Legacy Code to Modern Cloud in Hours

How Does 3X Code Conversion Works

Sample Outputs

Convert Legacy Code
to Modern Cloud
in Hours