Fix “source array too small” When Updating an Array in PostgreSQL

If you’re getting an error that reads “source array too small” when updating an array in PostgreSQL, it’s probably because you’re passing a slice that’s smaller than your specified range. For example, if you specify a range that covers four elements but provide an array that contains just three elements, then you’d get this error.

To fix the error, be sure to provide an an array that contains at least as many elements as are specified in the range.

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Fix “function array_shuffle(integer, integer) does not exist” in PostgreSQL

If you’re getting an error that reads “function array_shuffle(integer, integer) does not exist” when using the array_shuffle() function in PostgreSQL, it’s probably because the argument you’re passing to the function is not an array.

Actually, the error message implies that you’re passing multiple integer values (two in this case, but it could be more), separated by a comma. Perhaps you’re trying to pass an array of integers, but you haven’t provided them in an array. Or perhaps you’re passing the wrong column or variable. Either way, the argument for this function must be an array.

To fix this error, replace the integer values with a single array value when calling the array_shuffle() function.

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Fix Error “op ANY/ALL (array) requires array on right side” in PostgreSQL

If you’re getting a PostgreSQL error that reads “op ANY/ALL (array) requires array on right side” it’s probably because you’re passing a non array to the ANY() or ALL() construct.

These constructs require an array to be included in the parentheses, and so passing a non array returns an error.

To fix this issue, be sure to pass an array when using these functions.

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Fix Error “date field value out of range” when using make_date() in PostgreSQL

If you’re getting an error that reads ‘date field value out of range‘ in PostgreSQL while using the make_date() function, it’s probably because one or more of the date parts you’re providing is out of range for that date part.

It’s possible that you’ve got the month and day in the wrong order.

To fix this issue, be sure that each date part you provide is within the valid range for that date part. It may be that all you need to do is switch the day and the month around.

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Fix Error “function generate_subscripts(numeric, integer) does not exist” in PostgreSQL

If you’re getting a PostgreSQL error that reads “function generate_subscripts(numeric, integer) does not exist“, it’s probably because your first argument is not an array. This specific error message implies that the first argument is a numeric value, but we’d get a similar error when passing an integer.

The first argument for this function must be an array.

To fix this error, be sure that your first argument to generate_subscripts() is an array.

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Fix Error “searching for elements in multidimensional arrays is not supported” in PostgreSQL

If you’re getting a PostgreSQL error that reads “searching for elements in multidimensional arrays is not supported“, it’s probably because you’re trying to perform an operation against a multi dimensional array when that operation only supports one dimensional arrays.

To fix this issue, perform the operation against a one dimensional array instead. You may be able to do this by applying the unnest() function against the multi dimensional array.

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How to Fix Error “could not determine polymorphic type because input has type unknown” when using array_shuffle() in PostgreSQL

If you’re getting an error that reads “could not determine polymorphic type because input has type unknown” when using the array_shuffle() function in PostgreSQL, it’s probably because your argument is of the wrong type.

The array_shuffle() function requires an array as its argument. Passing a non-array value will result in an error. The actual error can vary, depending on the argument you pass, but either way, the error is usually due to a non-array argument being passed.

To fix this error, be sure to pass an array as the argument when calling the array_shuffle() function.

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Fix “multidimensional arrays must have array expressions with matching dimensions” in PostgreSQL

If you’re getting an error that reads “multidimensional arrays must have array expressions with matching dimensions” it’s probably because you’re trying to create a multi-dimensional array where the inner arrays at the same level have different dimensions.

Multidimensional arrays must be rectangular. To fix this issue, make sure all arrays at the same level have the same dimensions.

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Fix Error “cannot subscript type text because it does not support subscripting” in PostgreSQL

If you’re getting a PostgreSQL error that reads something like “cannot subscript type text because it does not support subscripting” when selecting data from a database, it’s probably because you’re trying to perform some sort of array operation against a non array value.

The above error specifically mentions text data but we could get the same error when using a different data type, like an integer, character varying, etc.

To fix this issue, be sure to run the array operations against actual arrays. If working with non array data, then don’t use array operations against that data.

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Fix “function generate_subscripts(text[], integer, integer) does not exist” in PostgreSQL

If you’re getting a PostgreSQL error that reads something like “function generate_subscripts(text[], integer, integer) does not exist“, it’s probably because your third argument is of the wrong type when using the generate_subscripts() function.

The above error specifically implies that an integer was passed as the third argument, but it must be a boolean value.

The third argument of the generate_subscripts() function is optional, but if passed, it must be a boolean expression.

To fix this error, either pass a boolean value as the third argument, or eliminate the third argument altogether.

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