fix(grib-index): support querying float values #520
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When indexing GRIB files using the
anemoi-datasets grib-index, it might occur that the program fails due to duplicated messages even though they are not really duplicates. This occurs for instance with soil variables, where by default values forlevelare interpreted as integers which leads to values such as 0.01, 0.004, etc. to all be decoded as "0".To solve this, one needs to use the
key:typesyntax to decode a key in a specific type, e.g.level:d. However, this leads to another error because SQLite does not support column names that contain colons.As a simple fix, the proposed solution is to replace colons with underscores.
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