postgresql array index
2015年3月25日 — Yes you can index an array, but you have to use the array operators and the GIN-index type. Example: CREATE TABLE "Test"("Column1" int[]); ... ,The array ordering operators ( < , >= , etc) compare the array contents element-by-element, using the default B-tree comparison function for the element data ... ,Array Value Input. To write an array value as a literal constant, enclose the element values within curly braces and separate them by commas. (If you know C ... ,To write an array value as a literal constant, enclose the element values within curly braces and separate them by commas. (If you know C, this is not unlike the C ... ,To set an element of an array constant to NULL, write NULL for the element value. (Any upper- or lower-case variant of NULL will do.) If you want an actual string ... ,Each index type uses a different algorithm that is best suited to different types of ... indexes which can handle values that contain more than one key, arrays for ... ,There is also support for indexed searches using some of the operators. All of these operations will throw an error if a supplied array contains any NULL elements. ,2017年10月18日 — If you were storing the array as a real array not as a json, you could use array_position() to find the (first) index of a given element: ,
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 postgresql array index 相關參考資料
Can PostgreSQL index array columns? - Stack Overflow
2015年3月25日 — Yes you can index an array, but you have to use the array operators and the GIN-index type. Example: CREATE TABLE "Test"("Column1" int[]); ... https://stackoverflow.com Documentation: 10: 9.18. Array Functions and ... - PostgreSQL
The array ordering operators ( < , >= , etc) compare the array contents element-by-element, using the default B-tree comparison function for the element data ... https://www.postgresql.org Documentation: 9.0: Arrays - PostgreSQL
Array Value Input. To write an array value as a literal constant, enclose the element values within curly braces and separate them by commas. (If you know C ... https://www.postgresql.org Documentation: 9.1: Arrays - PostgreSQL
To write an array value as a literal constant, enclose the element values within curly braces and separate them by commas. (If you know C, this is not unlike the C ... https://www.postgresql.org Documentation: 9.2: Arrays - PostgreSQL
To set an element of an array constant to NULL, write NULL for the element value. (Any upper- or lower-case variant of NULL will do.) If you want an actual string ... https://www.postgresql.org Documentation: 9.4: Index Types - PostgreSQL
Each index type uses a different algorithm that is best suited to different types of ... indexes which can handle values that contain more than one key, arrays for ... https://www.postgresql.org Documentation: 9.4: intarray - PostgreSQL
There is also support for indexed searches using some of the operators. All of these operations will throw an error if a supplied array contains any NULL elements. https://www.postgresql.org How to get index of an array value in PostgreSQL? - Stack ...
2017年10月18日 — If you were storing the array as a real array not as a json, you could use array_position() to find the (first) index of a given element: https://stackoverflow.com Take a Dip into PostgreSQL Arrays - Compose Articles
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