73 lines
3.1 KiB
MySQL
73 lines
3.1 KiB
MySQL
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-- https://dev.mysql.com/doc/refman/8.0/en/select.html
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/* SELECT
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[ALL | DISTINCT | DISTINCTROW ]
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[HIGH_PRIORITY]
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[STRAIGHT_JOIN]
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[SQL_SMALL_RESULT] [SQL_BIG_RESULT] [SQL_BUFFER_RESULT]
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[SQL_CACHE | SQL_NO_CACHE] [SQL_CALC_FOUND_ROWS]
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select_expr [, select_expr] ...
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[into_option]
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[FROM table_references
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[PARTITION partition_list]]
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[WHERE where_condition]
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[GROUP BY {col_name | expr | position}, ... [WITH ROLLUP]]
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[HAVING where_condition]
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[WINDOW window_name AS (window_spec)
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[, window_name AS (window_spec)] ...]
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[ORDER BY {col_name | expr | position}
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[ASC | DESC], ... [WITH ROLLUP]]
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[LIMIT {[offset,] row_count | row_count OFFSET offset}]
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[into_option]
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[FOR {UPDATE | SHARE}
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[OF tbl_name [, tbl_name] ...]
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[NOWAIT | SKIP LOCKED]
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| LOCK IN SHARE MODE]
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[into_option]
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into_option: {
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INTO OUTFILE 'file_name'
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[CHARACTER SET charset_name]
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export_options
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| INTO DUMPFILE 'file_name'
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| INTO var_name [, var_name] ...
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} */
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SELECT 1 + 1 FROM DUAL;
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SELECT AVG(score), t1.* FROM t1;
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SELECT CONCAT(last_name,', ',first_name) AS full_name FROM my_table ORDER BY full_name;
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SELECT CONCAT(last_name,', ',first_name) full_name FROM my_table ORDER BY full_name;
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SELECT column1 column2 FROM my_table;
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SELECT t1.name, t2.salary FROM employee AS t1, info AS t2 WHERE t1.name = t2.name;
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SELECT t1.name, t2.salary FROM employee t1, info t2 WHERE t1.name = t2.name;
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SELECT college, region, seed FROM tournament ORDER BY region, seed;
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SELECT college, region AS r, seed AS s FROM tournament ORDER BY r, s;
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SELECT college, region, seed FROM tournament ORDER BY 2, 3;
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SELECT a, b, COUNT(c) AS t FROM test_table GROUP BY a,b ORDER BY a,t DESC;
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SELECT COUNT(col1) AS col2 FROM t GROUP BY col2 HAVING col2 = 2;
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SELECT col_name FROM tbl_name HAVING col_name > 0;
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SELECT col_name FROM tbl_name WHERE col_name > 0;
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SELECT user, MAX(salary) FROM users GROUP BY user HAVING MAX(salary) > 10;
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SELECT 12 AS a, a FROM t GROUP BY a;
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SELECT * FROM tbl LIMIT 5,10;
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SELECT * FROM tbl LIMIT 95,18446744073709551615;
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SELECT * FROM tbl LIMIT 5;
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SELECT * FROM tbl WINDOW window_name AS (window_spec) LIMIT 5;
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SELECT * FROM t1, t2 FOR SHARE OF t1;
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SELECT * FROM t1, t2 INTO OUTFILE '/path/to/file_name';
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SELECT ALL HIGH_PRIORITY STRAIGHT_JOIN SQL_SMALL_RESULT SQL_CACHE * FROM tbl PARTITION (partition_name, partition_name1) LOCK IN SHARE MODE;
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SELECT DISTINCTROW HIGH_PRIORITY STRAIGHT_JOIN SQL_BIG_RESULT SQL_NO_CACHE * FROM tbl PARTITION (partition_name, partition_name1) FOR UPDATE OF tbl_name SKIP LOCKED;
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SELECT DISTINCT HIGH_PRIORITY STRAIGHT_JOIN SQL_BUFFER_RESULT SQL_CALC_FOUND_ROWS * FROM tbl PARTITION (partition_name, partition_name1) FOR UPDATE OF tbl_name SKIP LOCKED;
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SELECT * INTO @my_var FROM t1;
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SELECT * FROM t1 INTO @my_var FOR UPDATE;
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SELECT 1 FOR UPDATE INTO @my_var;
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SELECT * FROM t1 FOR UPDATE INTO @my_var;
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SELECT id, data INTO @x, @y FROM test.t1 LIMIT 1;
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SELECT * FROM t1 AS t INTO @x,@y,@z;
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SELECT * FROM t1 AS t INTO OUTFILE '/tmp/select-values.txt';
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SELECT a,b,a+b INTO OUTFILE '/tmp/result.txt' FIELDS TERMINATED BY ',' OPTIONALLY ENCLOSED BY '"' LINES TERMINATED BY '\n' FROM test_table;
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