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refactor schema query generation

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This commit is contained in:
Sven Klemm 2018-07-27 14:02:12 +02:00
parent 734118de86
commit ad26a319c5
1 changed files with 35 additions and 20 deletions
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55
public/app/plugins/datasource/postgres/meta_query.ts
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@ -55,31 +55,46 @@ LIMIT 1
return query; return query;
} }
buildTableQuery() { buildSchemaConstraint() {
let query = ` let query = `
SELECT quote_ident(table_name) table_schema IN (
FROM information_schema.tables SELECT CASE WHEN trim(unnest) = \'"$user"\' THEN user ELSE trim(unnest) END
WHERE FROM unnest(string_to_array(current_setting(\'search_path\'),\',\'))
table_schema IN ( )`;
SELECT CASE WHEN trim(unnest) = \'"$user"\' THEN user ELSE trim(unnest) END return query;
FROM unnest(string_to_array(current_setting(\'search_path\'),\',\')) }
)
ORDER BY table_name`; buildTableConstraint(table: string) {
let query = '';
// check for schema qualified table
if (table.includes('.')) {
let parts = table.split('.');
query = 'table_schema = ' + this.quoteIdentAsLiteral(parts[0]);
query += ' AND table_name = ' + this.quoteIdentAsLiteral(parts[1]);
return query;
} else {
query = `
table_schema IN (
SELECT CASE WHEN trim(unnest) = \'"$user"\' THEN user ELSE trim(unnest) END
FROM unnest(string_to_array(current_setting(\'search_path\'),\',\'))
)`;
query += ' AND table_name = ' + this.quoteIdentAsLiteral(table);
return query;
}
}
buildTableQuery() {
let query = 'SELECT quote_ident(table_name) FROM information_schema.tables WHERE ';
query += this.buildSchemaConstraint();
query += ' ORDER BY table_name';
return query; return query;
} }
buildColumnQuery(type?: string) { buildColumnQuery(type?: string) {
let query = ` let query = 'SELECT quote_ident(column_name) FROM information_schema.columns WHERE ';
SELECT quote_ident(column_name) query += this.buildTableConstraint(this.target.table);
FROM information_schema.columns
WHERE
table_schema IN (
SELECT CASE WHEN trim(unnest) = \'"$user"\' THEN user ELSE trim(unnest) END
FROM unnest(string_to_array(current_setting(\'search_path\'),\',\'))
LIMIT 1
)
`;
query += ' AND table_name = ' + this.quoteIdentAsLiteral(this.target.table);
switch (type) { switch (type) {
case 'time': { case 'time': {