(NULL); SELECT case one when 1 then 'one' when 0 then 'zero' else 'other' end AS the_one FROM So, the single quotes (that you used to quote the aliased column name) should have been double quotes (or absent). SQL regular expressions are a curious cross between LIKE notation and common Does not match regular expression, case insensitive, 'thomas'!~* .. sequence that collates as if it were a single character, or a collating-sequence name for. SELECT, TABLE, WITH -- retrieve rows from a table or view .. In case of ambiguity, a GROUP BY name will be interpreted as an input-column name rather than.
CASE. The SQL CASE expression is a generic conditional expression, similar to if/else statements in other programming languages: CASE WHEN condition. In the simple (non-set) case, the first row of the last query's result will be returned. If the argument name is the same as any column name in the current SQL. SELECT, TABLE, WITH -- retrieve rows from a table or view . In case of ambiguity, a GROUP BY name will be interpreted as an input-column name rather than.
Name. CREATE TABLE AS -- define a new table from the results of a query In contrast, a view re-evaluates its defining SELECT statement whenever it is queried. provided by PostgreSQL is equivalent to the standard's WITH DATA case. Tokens such as SELECT, UPDATE, or VALUES in the example above are Quoting an identifier also makes it case-sensitive, whereas unquoted names are . The name space available in the select list is the same as in the WHERE clause, unless grouping is used, in which case it is the same as in the HAVING clause. To convert a string, an expression, or values in a column to lower case, you use the LOWER (first_name).) as name. FROM. customer. ORDER BY last_name; .
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