The SQL/JSON functionJSON_ARRAYAGGis an aggregate function. It takes as its input a column of SQL expressions, converts each expression to a JSON value, and returns a single JSON array that contains those JSON values. expr Forexpr, you can specify any SQL expression that evaluates to a JS...
Since the ARRAY_AGG is an aggregate function (gasp!), you’ll need a GROUP BY statement at the end of your query if you’re grouping by certain field ARRAY_AGG and similar aggregate functions can become inefficient or costly to compute on large datasets, so use ARRAY_AGG wisely and truly...
PostgreSQL array_agg Function The array_agg function in PostgreSQL is an aggregate function that collects multiple values from a group and returns them as an array. This is especially useful for aggregating data from multiple rows into a single array format, enabling you to perform complex data m...
The ARRAY_AGG function aggregates a set of elements into an array. Invocation of the ARRAY_AGG aggregate function is based on the result array type.Ordinary array aggregationARRAY_AGG(element-expression ORDER BY,sort-keyASCDESC ) element-expression expressionrow-expression(expression,,expression) ...
Returns an array consisting of all values in expr within the group. This function is a synonym for collect_list aggregate function.Syntax Copy array_agg ( [ALL | DISTINCT] expr ) [FILTER ( WHERE cond ) ] This function can also be invoked as a window function using the OVER clause....
ai_similarity function ai_summarize function ai_translate function ampersand sign operator and operator any function any_value function approx_count_distinct function approx_percentile function approx_top_k function array function array_agg function array_append function array_compact function array_contains...
ARRAY_AGG()is an aggregate function that returns an ordinary (non-associative) array. Our example is trivial, but instead of a column you may pass it an expression.ORDER BYis optional, and only useful if the order of elements is relevant.ASCandDESCare supported. ...
The ARRAY_AGG() function in Postgres is an aggregate function that takes a column as input and returns an array of values from all the rows in the specified gr…
Thearray_agg(value)function aggregates values (including nulls) as an array. The input values to the aggregate can befiltered. Syntax array_agg(valuesORDERBYcol_refASCDESCNULLS LASTNULLS FIRST,)FILTER(WHEREfilter_clause) Signatures ParameterTypeDescription ...
The ARRAY_AGG function aggregates a set of elements into an array. ARRAY_AGG(expression ORDER BY,sort-key-expressionASCDESC) expression An expression that returns a value that is any data type that can be specified for a CREATE TYPE (Array) statement. ORDER BY Specifies the order of the...