2021-08-28 13:46:32 +03:00
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string
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================================================================================
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SELECT 'hello';
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--------------------------------------------------------------------------------
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(source_file
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(select_statement
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(select_item
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(string))))
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================================================================================
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nested select
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================================================================================
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SELECT (SELECT 'hello');
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--------------------------------------------------------------------------------
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(source_file
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(select_statement
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(select_item
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(select_statement
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(select_item
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(string))))))
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================================================================================
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many
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================================================================================
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SELECT 1234, -25, TRUE, FALSE, NULL, *;
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--------------------------------------------------------------------------------
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(source_file
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(select_statement
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(select_item
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(number))
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(select_item
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(op_expression
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(minus)
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(number)))
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(select_item
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(true))
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(select_item
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(false))
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(select_item
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(null))
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(select_item
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(star))))
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================================================================================
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identifiers
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================================================================================
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SELECT foo, foo.bar;
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--------------------------------------------------------------------------------
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(source_file
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(select_statement
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(select_item
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(identifier))
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(select_item
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(identifier))))
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================================================================================
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binary_expression
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================================================================================
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SELECT a + b - c / d * e % f;
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--------------------------------------------------------------------------------
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(source_file
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(select_statement
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(select_item
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(op_expression
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(op_expression
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(identifier)
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(identifier))
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(op_expression
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(op_expression
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(op_expression
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(identifier)
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(identifier))
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(identifier))
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(identifier))))))
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================================================================================
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unary prec over binary
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================================================================================
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SELECT -22 + - (5 + 1);
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--------------------------------------------------------------------------------
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(source_file
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(select_statement
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(select_item
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(op_expression
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(op_expression
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(minus)
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(number))
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(op_expression
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(minus)
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(op_expression
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(number)
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(number)))))))
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================================================================================
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nested parens
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================================================================================
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SELECT ((((24 + 24))));
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--------------------------------------------------------------------------------
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(source_file
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(select_statement
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(select_item
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(op_expression
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(number)
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(number)))))
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================================================================================
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logical expressions
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================================================================================
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SELECT 1 - 2 AND TRUE OR (5 = 2);
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--------------------------------------------------------------------------------
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(source_file
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(select_statement
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(select_item
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(op_expression
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(op_expression
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(op_expression
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(number)
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(number))
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(and)
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(true))
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(or)
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(op_expression
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(number)
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(comparison_op)
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(number))))))
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================================================================================
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function call
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================================================================================
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SELECT foo.bar(param) + baz();
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--------------------------------------------------------------------------------
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(source_file
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(select_statement
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(select_item
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(op_expression
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(function_call
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(identifier)
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(identifier))
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(function_call
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(identifier))))))
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================================================================================
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nested function call
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================================================================================
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SELECT coalesce(null, nullif(false, true), ops.my_fn(5));
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--------------------------------------------------------------------------------
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(source_file
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(select_statement
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(select_item
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(function_call
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(identifier)
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(null)
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(function_call
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(identifier)
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(false)
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(true))
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(function_call
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(identifier)
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(number))))))
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================================================================================
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casting
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================================================================================
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SELECT 1::text;
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--------------------------------------------------------------------------------
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(source_file
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(select_statement
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(select_item
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(op_expression
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(number)
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(cast)
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(identifier)))))
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================================================================================
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string concatenation
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================================================================================
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SELECT 'hello' || 1 || now();
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--------------------------------------------------------------------------------
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(source_file
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(select_statement
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(select_item
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(op_expression
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(op_expression
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(string)
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(other_op)
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(number))
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(other_op)
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(function_call
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(identifier))))))
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================================================================================
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string quote
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================================================================================
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SELECT 'hello' || 'quote''s everywh''ere';
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--------------------------------------------------------------------------------
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(source_file
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(select_statement
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(select_item
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(op_expression
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(string)
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(other_op)
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(string)))))
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2021-08-31 21:29:46 +03:00
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================================================================================
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is null, isnull, is not null, notnull
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================================================================================
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SELECT
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foo is null,
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foo is not null,
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foo isnull,
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foo notnull;
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--------------------------------------------------------------------------------
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(source_file
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(select_statement
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(select_item
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(op_expression
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(identifier)
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(comparison_null)))
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(select_item
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(op_expression
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(identifier)
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(comparison_null)))
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(select_item
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(op_expression
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(identifier)
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(comparison_null)))
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(select_item
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(op_expression
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(identifier)
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(comparison_null)))))
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2021-08-31 21:30:45 +03:00
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================================================================================
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time expressions
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================================================================================
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SELECT
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foo::interval,
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foo at time zone 'utc',
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interval '1 day',
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interval '1' hour to second,
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interval '1' day + interval '3' month;
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--------------------------------------------------------------------------------
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(source_file
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(select_statement
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(select_item
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(op_expression
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(identifier)
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(cast)
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(identifier)))
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(select_item
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(time_expression
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(identifier)
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(string)))
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(select_item
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(time_expression
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(string)))
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(select_item
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(time_expression
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(string)))
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(select_item
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(op_expression
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(time_expression
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(string))
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(time_expression
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(string))))))
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