Updated README

README.md

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   - split: train
     path: data/train-*
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+# NSText2SQL Dataset (Reformatted for Fine Tuned Generative Models)
+This is the exact same dataset as WikiSQL: https://huggingface.co/datasets/NumbersStation/NSText2SQL, but with the data reformatted to allow direct use to fine tune generative models. The original license and credits for the original dataset remain in place.
+
+Specifically, the changes from standard WikiSQL are:
+
+1. Removed non-english questions
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+2. Removed all rows with more than one input table, simplifying the problem for smaller models.
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+3. Updated SQL queries in the dataset to prefer using LIKE statements for string matches, to allow better partial matching of results in chat scenarios where a user may not fully specify all data.
+
+4. Removed syntactically invalid SQL. Specifically, we created in-memory (SQLite) tables using the SQL DESCRIBE of the tables, then ran the SQL query against these in-memory tables. Any SQL queries that threw exceptions for any reason were discarded, and the rest that ran without exceptions were included in this dataset.