Utility Functions and C Language Reference > Virtual Table Server Functions (VTS) for C, C#, and Java > Virtual Table Server (VTS) Functions for Single Connection > Alphabetical Listing > lrvtc_query_column

lrvtc_query_column

Retrieves the data in a field.

C Language

VTCERR2 lrvtc_query_column ( char *columnName, int rowIndex );

C# Language

void vts.query_column ( string columnName, int rowIndex );

Java Language

int Lrvtc.query_column ( string columnName, int rowIndex );
Query Functions

Arguments

Name Comments
columnName The name of the column.
rowIndex The number of the row. The first row has index 1.

lrvtc_query_column retrieves the data in a field and stores it in a parameter with the same name as the column.

If there is no data in a cell, the output is NULL.

Return Values

C Language:   Returns zero on success or one of the Error Codes.

C# Language: No return value.

Java Language:   Returns zero on success or one of the Error Codes.

Parameterization

All string input arguments can be passed using standard parameterization.

C Language Example

    int rc;
    int rowNum;
    ...
    rowNum = 10;
    rc = lrvtc_query_column("C_credit", rowNum);
    lr_log_message("query_column rc=%d\n", rc);
    lr_log_message("Column C_credit, row %d, value is %s", rowNum, lr_eval_string("{C_credit}"));

C# Language Example

.Net Single Connection Example

Java Language Example

Java Single Connection Example