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refactor column function handling

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This commit is contained in:
Sven Klemm
2018-07-28 21:30:08 +02:00
parent 6ca7a03975
commit 5327580939
5 changed files with 52 additions and 17 deletions
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17
public/app/plugins/datasource/postgres/specs/postgres_query.jest.ts
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@ -61,9 +61,11 @@ describe('PostgresQuery', function() {
column = [
{ type: 'column', params: ['v'] },
{ type: 'alias', params: ['a'] },
{ type: 'special', params: ['increase'] },
{ type: 'window', params: ['increase'] },
];
expect(query.buildValueColumn(column)).toBe('v - lag(v) OVER (ORDER BY time) AS "a"');
expect(query.buildValueColumn(column)).toBe(
'(CASE WHEN v >= lag(v) OVER (ORDER BY time) THEN v - lag(v) OVER (ORDER BY time) ELSE v END) AS "a"'
);
});
describe('When generating value column SQL with metric column', function() {
@ -83,17 +85,20 @@ describe('PostgresQuery', function() {
column = [
{ type: 'column', params: ['v'] },
{ type: 'alias', params: ['a'] },
{ type: 'special', params: ['increase'] },
{ type: 'window', params: ['increase'] },
];
expect(query.buildValueColumn(column)).toBe('v - lag(v) OVER (PARTITION BY host ORDER BY time) AS "a"');
expect(query.buildValueColumn(column)).toBe(
'(CASE WHEN v >= lag(v) OVER (PARTITION BY host ORDER BY time) THEN v - lag(v) OVER (PARTITION BY host ORDER BY time) ELSE v END) AS "a"'
);
column = [
{ type: 'column', params: ['v'] },
{ type: 'alias', params: ['a'] },
{ type: 'aggregate', params: ['max'] },
{ type: 'special', params: ['increase'] },
{ type: 'window', params: ['increase'] },
];
expect(query.buildValueColumn(column)).toBe(
'max(v ORDER BY time) - lag(max(v ORDER BY time)) OVER (PARTITION BY host) AS "a"'
'(CASE WHEN max(v ORDER BY time) >= lag(max(v ORDER BY time)) OVER (PARTITION BY host) ' +
'THEN max(v ORDER BY time) - lag(max(v ORDER BY time)) OVER (PARTITION BY host) ELSE max(v ORDER BY time) END) AS "a"'
);
});