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Top Forums Shell Programming and Scripting Replace sql with dynamic values Post 303007498 by Master_Mind on Friday 17th of November 2017 07:02:46 AM
Old 11-17-2017
Yes the number of columns in the file can increase but the structure of the query remains the same and it gets added for e.g. if col_3 is there in file.txt. Then below will be the output

Code:
select id,col_1,col_2,col_3 from (
select a.id,
a.col_1,
a.col_2,
a.col_3,
rank() over (ORDER BY cast(a.col_1 AS double) DESC) AS col_1_rank,
rank() over (ORDER BY cast(a.col_2 AS double) DESC) AS col_2_rank,
rank() over (ORDER BY cast(a.col_3 AS double) DESC) AS col_3_rank,
from table_name a )t
join 
( 
SELECT count(case when col_1='.' then null else 1 end) AS col_1_count,
count(case when col_2='.' then null else 1 end) AS col_2_count,
count(case when col_3='.' then null else 1 end) AS col_3_count				
FROM   table_name
) f
where t.col_1_rank < 0.0001*f.col_1_count or t.col_2_rank < 0.0001*f.col_2_count or t.col_3_rank < 0.0001*f.col_3_count ;

 

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MYSQLI_STMT_FETCH(3)							 1						      MYSQLI_STMT_FETCH(3)

mysqli_stmt::fetch - Fetch results from a prepared statement into the bound variables

       Object oriented style

SYNOPSIS
bool mysqli_stmt::fetch (void ) DESCRIPTION
Procedural style bool mysqli_stmt_fetch (mysqli_stmt $stmt) Fetch the result from a prepared statement into the variables bound by mysqli_stmt_bind_result(3). Note Note that all columns must be bound by the application before calling mysqli_stmt_fetch(3). Note Data are transferred unbuffered without calling mysqli_stmt_store_result(3) which can decrease performance (but reduces memory cost). PARAMETERS
o $ stmt -Procedural style only: A statement identifier returned by mysqli_stmt_init(3). RETURN VALUES
Return Values +------+---------------------------------------------------+ |Value | | | | | | | Description | | | | +------+---------------------------------------------------+ | | | |TRUE | | | | | | | Success. Data has been fetched | | | | | | | |FALSE | | | | | | | Error occurred | | | | | | | |NULL | | | | | | | No more rows/data exists or data truncation | | | occurred | | | | +------+---------------------------------------------------+ EXAMPLES
Example #1 Object oriented style <?php $mysqli = new mysqli("localhost", "my_user", "my_password", "world"); /* check connection */ if (mysqli_connect_errno()) { printf("Connect failed: %s ", mysqli_connect_error()); exit(); } $query = "SELECT Name, CountryCode FROM City ORDER by ID DESC LIMIT 150,5"; if ($stmt = $mysqli->prepare($query)) { /* execute statement */ $stmt->execute(); /* bind result variables */ $stmt->bind_result($name, $code); /* fetch values */ while ($stmt->fetch()) { printf ("%s (%s) ", $name, $code); } /* close statement */ $stmt->close(); } /* close connection */ $mysqli->close(); ?> Example #2 Procedural style <?php $link = mysqli_connect("localhost", "my_user", "my_password", "world"); /* check connection */ if (mysqli_connect_errno()) { printf("Connect failed: %s ", mysqli_connect_error()); exit(); } $query = "SELECT Name, CountryCode FROM City ORDER by ID DESC LIMIT 150,5"; if ($stmt = mysqli_prepare($link, $query)) { /* execute statement */ mysqli_stmt_execute($stmt); /* bind result variables */ mysqli_stmt_bind_result($stmt, $name, $code); /* fetch values */ while (mysqli_stmt_fetch($stmt)) { printf ("%s (%s) ", $name, $code); } /* close statement */ mysqli_stmt_close($stmt); } /* close connection */ mysqli_close($link); ?> The above examples will output: Rockford (USA) Tallahassee (USA) Salinas (USA) Santa Clarita (USA) Springfield (USA) SEE ALSO
mysqli_prepare(3), mysqli_stmt_errno(3), mysqli_stmt_error(3), mysqli_stmt_bind_result(3). PHP Documentation Group MYSQLI_STMT_FETCH(3)
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